Tag: 0-100

Highly porous CuO/MnO₂ catalyst prepared by gas release-assisted technology and its enhancement of formaldehyde removal efficiency was written by Wang, Shu;Qiu, Lijuan;Li, Changjiang;Zheng, Yuchuan;Pan, Le. And the article was included in Research on Chemical Intermediates in 2022.SDS of cas: 20427-59-2 This article mentions the following:

A porous CuO/MnO₂ catalyst was synthesized by a gas release-assisted method. Due to the participation of gases (H₂O, NH₃, CO₂) released from ammonia and carbonate, the porous CuO/MnO₂ with high surface and abundant aperture structure was obtained. Benefitting from the large sp. surface area, high TOF and the proper at. ratio of Cu and Mn on the catalyst surface, 0.20CuO/MnO₂ (where 0.20 acted as the molar ratio of copper to manganese species) has the best catalytic performance, which can completely remove formaldehyde at 130°C with 400 ppm HCHO concentration Under 10 times higher than the upper limit of indoor formaldehyde (World Health Organization), the formaldehyde conversion of the porous CuO/MnO₂ catalyst remains above 97% at 25°C (the relative humidity RH ≤ 50%), which suggest it can almost completely remove the low concentration formaldehyde. The catalytic performance decays slowly within 6 h. Therefore, the porous CuO/MnO₂ catalyst shows excellent low-concentration formaldehyde removal effect, long-term catalytic stability, suggesting it has a great potential for indoor formaldehyde removal under 0-50% relative humidity. This result not only provides an inexpensive, simple and efficient porous CuO/MnO₂ material for formaldehyde removal indoor at room temperature but also provides a new strategy for the preparation of other porous material. In the experiment, the researchers used many compounds, for example, Cuprichydroxide (cas: 20427-59-2SDS of cas: 20427-59-2).

Cuprichydroxide (cas: 20427-59-2) belongs to copper catalysts. The applications of Copper-based nanoparticles have received great attention due to the earth-abundant, inexpensive and low toxicity. Due to these characteristics, copper nanoparticles have generated a great deal of interest especially in the field of catalysis. SDS of cas: 20427-59-2

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Microbial Disinfection with Supercoiling Capacitive Triboelectric Nanogenerator was written by Huo, Zheng-Yang;Lee, Dong-Min;Jeong, Jang-Mook;Kim, Young-Jun;Kim, Jihye;Suh, In-Yong;Xiong, Peixun;Kim, Sang-Woo. And the article was included in Advanced Energy Materials in 2022.HPLC of Formula: 20427-59-2 This article mentions the following:

Water-borne diseases resulting from pathogen infection are especially challenges in areas with inadequate sanitation and power supply. Here a novel disinfection system is developed for bacterial and viral inactivation in water using a self-powered supercoiling-mediated rotational triboelec. nanogenerator (S-TENG) as a power source to drive a new oxidation-assisted electroporation mechanism. Owing to its rational design, the S-TENG achieves an ultrafast rotation (∼7500 rpm), therefore it enables a simultaneous nanowire-enhanced localized elec. field and generation of oxidative species resulting in high disinfection performance: >99.9999% microbial inactivation at a high flux of 15 000 L h^-1 m^-2. An integrated S-TENG-powered disinfection prototype using an enlarged electrode (area of 50 cm²) achieves complete disinfection when the gravity-driven natural water flows through the whole system at a high rate (1 L min^-1). This rapid, self-powered water disinfection method is a potential solution for urgent water disinfection needs during disasters and pandemics, and water disinfection in areas with inadequate power supply. In the experiment, the researchers used many compounds, for example, Cuprichydroxide (cas: 20427-59-2HPLC of Formula: 20427-59-2).

Cuprichydroxide (cas: 20427-59-2) belongs to copper catalysts. The transition metal-catalyzed chemical transformation of organic electrophiles and organometallic reagents has turned up as an exceedingly robust synthetic tool. Due to these characteristics, copper nanoparticles have generated a great deal of interest especially in the field of catalysis. HPLC of Formula: 20427-59-2

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Freestanding 3D Metallic Micromesh for High-Performance Flexible Transparent Solid-State Zinc Batteries was written by Chen, Tianwei;Shuang, Zhengwen;Hu, Jin;Zhao, YanLi;Wei, Donghai;Ye, Jinghua;Zhang, Guanhua;Duan, Huigao. And the article was included in Small in 2022.Category: copper-catalyst This article mentions the following:

Flexible transparent energy supplies are extremely essential to the fast-growing flexible electronic systems. However, the general developed flexible transparent energy storage devices are severely limited by the challenges of low energy d., safety issues, and/or poor compatibility. In this work, a freestanding 3D hierarchical metallic micromesh with remarkble optoelectronic properties (T = 89.59% and Rs = 0.23 Ω sq^-1) and super-flexibility is designed and manufactured for flexible transparent alk. zinc batteries. The 3D Ni micromesh supported Cu(OH)₂@NiCo bimetallic hydroxide flexible transparent electrode (3D NM@Cu(OH)₂@NiCo BH) is obtained by a combination of photolithog., chem. etching, and electrodeposition. The neg. electrode is constructed by electrodeposition of electrochem. active zinc on the surface of Ni@Cu micromesh (Ni@Cu@Zn MM). The metallic micromesh with 3D hierarchical nanoarchitecture can not only ensure low sheet resistance, but also realize high mass loading of active materials and short electron/ion transmission path, which can guarantee high energy d. and high-rate capability of the transparent devices. The flexible transparent 3D NM@Cu(OH)₂@NiCo BH electrode realizes a specific capacity of 66.03μAh cm^-2 at 1 mA cm^-2 with a transmittance of 63%. Furthermore, the assembled solid-state NiCo-Zn alk. battery exhibits a desirable energy d./power d. of 35.89μWh cm^-2/2000.26μW cm^-2 with a transmittance of 54.34%. In the experiment, the researchers used many compounds, for example, Cuprichydroxide (cas: 20427-59-2Category: copper-catalyst).

Cuprichydroxide (cas: 20427-59-2) belongs to copper catalysts. Copper has continued to be one of the most utilized and important transition metal catalysts in synthetic organic chemistry. Due to these characteristics, copper nanoparticles have generated a great deal of interest especially in the field of catalysis. Category: copper-catalyst

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Spectroscopic investigations and density functional theory calculations reveal differences in retention mechanisms of lead and copper on chemically-modified phytolith-rich biochars was written by Li, Jianhong;Wang, Shan-Li;Zheng, Lirong;Chen, Dongliang;Wu, Zhipeng;Sun, Chenghua;Bolan, Nanthi;Zhao, Hongting;Peng, An-an;Fang, Zheng;Zhou, Rongfu;Liu, Guobin;Bhatnagar, Amit;Qiu, Yong;Wang, Hailong. And the article was included in Chemosphere in 2022.Application of 20427-59-2 This article mentions the following:

A better understanding of different retention mechanisms of potentially toxic elements (PTEs) by biochars during the remediation of contaminated sites is critically needed. In this study, different spectroscopic techniques including synchrotron-based micro-X-ray fluorescence (μ-XRF), X-ray absorption fine structure (XAFS), and near-edge XAFS spectroscopy (NEXAFS), were used to investigate the spatial distributions and retention mechanisms of lead (Pb) and copper (Cu) on phytolith-rich coconut-fiber biochar (CFB), and ammonia, nitric acid and hydrogen peroxide modified CFB (MCFB) (i.e., ACFB, NCFB and HCFB). The μ-XRF analyses indicated that sorption sites on ACFB and NCFB were more efficient compared to those on CFB and HCFB to bind Pb/Cu. XAFS analyses revealed that the percentage of Pb species as Pb(C₂H₃O₂)₂ increased from 22.2% (Pb-loaded CFBs) to 47.4% and 41.9% on Pb-loaded NCFBs and HCFBs, while the percentage of Cu(OH)₂ and Cu(C₂H₃O₂)₂ increased from 5.8% to 32.8% (Cu-loaded CFBs) to 41.5% and 43.4% (Cu-loaded NCFBs), and 27.1% and 35.1% (Cu-loaded HCFBs), resp. Due to their similar at. structures of Pb/Cu, Pb(C₂H₃O₂)₂/Pb-loaded montmorillonite and Cu(C₂H₃O₂)₂/Cu(OH)₂ were identified as the predominant Pb/Cu species observed in Pb- and Cu-loaded MCFBs. The NEXAFS analyses of carbon confirmed that increasing amounts of carboxylic groups were formed on HCFB and NCFB by oxidizing carbon-containing functional groups, which could provide addnl. active binding sites for Pb/Cu retention. Results from the XPS analyses of nitrogen showed that azido-groups of ACFB played major roles in Pb/Cu retention, while amide-groups and pyridine-groups of NCFB primarily participated in Pb/Cu retention. Overall, d. functional theory calculations suggested that silicate and the synergistic effect of hydroxyl and carboxylic-groups on MCFBs were highly efficient in Pb retention, while azido-groups and/or carboxylic-groups played major roles in Cu retention. These results provide novel insights into the PTE retention mechanisms of MCFBs. In the experiment, the researchers used many compounds, for example, Cuprichydroxide (cas: 20427-59-2Application of 20427-59-2).

Cuprichydroxide (cas: 20427-59-2) belongs to copper catalysts. The applications of Copper-based nanoparticles have received great attention due to low toxicity and inexpensive, earth-abundant. Due to these characteristics, copper nanoparticles have generated a great deal of interest especially in the field of catalysis. Application of 20427-59-2

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

One-step synthesis of Cu(OH)₂-Cu/Ni foam cathode for electrochemical reduction of nitrate was written by Liang, Yuntao;Zeng, Yuxi;Tang, Xiaofeng;Xia, Wu;Song, Biao;Yao, Fubing;Yang, Yang;Chen, Yashi;Peng, Chuangxin;Zhou, Chengyun;Lai, Cui. And the article was included in Chemical Engineering Journal (Amsterdam, Netherlands) in 2023.Application of 20427-59-2 This article mentions the following:

Nitrate (NO-3) pollution in natural water is severe and brings serious environmental and human health problems. With the rise of electrocatalytic NO-3 reduction, highly reactive and selective electrodes are essential for the electrochem. reduction of NO-3. In this study, a one-step hydrothermal method was used to load Cu and Cu(OH)2 on Ni foam (NF) (Cu(OH)2-Cu/NF) as a cathode. The system′s unique design includes: Cu and Ni can promote the reduction of NO-3 and the generation of active hydrogen atom (H*) as a reducing agent. Then, Cu(OH)2 is beneficial to NO-2 adsorption and promotes the reduction of NO-2 intermediate. Finally, NH+4 is oxidized to N2 by reactive chlorine generated at the anode. The Cu(OH)2-Cu/NF electrode exhibits a 91.5 % conversion of NO-3-N in 90 min, which is 44 times higher than that of NF. Under 2000 mg/L Cl-, NH+4 finally oxidizes to N2 within 360 min, and N2 selectivity is 95.60 %. In addition, the Cu(OH)2-Cu/NF electrode maintained an excellent electrochem. performance after 20 cycles. This study provided a new idea for designing efficient, stable, and inexpensive NO-3 reduction electrodes. In the experiment, the researchers used many compounds, for example, Cuprichydroxide (cas: 20427-59-2Application of 20427-59-2).

Cuprichydroxide (cas: 20427-59-2) belongs to copper catalysts. The evolution of transition metal catalysts has attained a stage of civilization that authorizes for an extensive scope of chemical bonds formation partners to be combined efficiently. It is clear from the impact copper catalysis has had on organic synthesis that copper should be considered a first line catalyst for many organic reactions.Application of 20427-59-2

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Oxide-Derived Core-Shell Cu@Zn Nanowires for Urea Electrosynthesis from Carbon Dioxide and Nitrate in Water was written by Meng, Nannan;Ma, Xiaomin;Wang, Changhong;Wang, Yuting;Yang, Rong;Shao, Jiang;Huang, Yanmei;Xu, Yue;Zhang, Bin;Yu, Yifu. And the article was included in ACS Nano in 2022.Safety of Cuprichydroxide This article mentions the following:

Urea electrosynthesis provides an intriguing strategy to improve upon the conventional urea manufacturing technique, which is associated with high energy requirements and environmental pollution. However, the electrochem. coupling of NO₃^– and CO₂ in H₂O to prepare urea under ambient conditions is still a major challenge. Herein, self-supported core-shell Cu@Zn nanowires are constructed through an electroreduction method and exhibit superior performance toward urea electrosynthesis via CO₂ and NO₃^– contaminants as feedstocks. Both ¹H NMR spectra and liquid chromatog. identify urea production The optimized urea yield rate and Faradaic efficiency over Cu@Zn can reach 7.29μmol cm^-2 h^-1 and 9.28% at -1.02 V vs RHE, resp. The reaction pathway is revealed based on the intermediates detected through in situ attenuated total reflection Fourier transform IR spectroscopy and online differential electrochem. mass spectrometry. The combined results of theor. calculations and experiments prove that the electron transfer from the Zn shell to the Cu core can not only facilitate the formation of *CO and *NH₂ intermediates but also promote the coupling of these intermediates to form C-N bonds, leading to a high faradaic efficiency and yield of the urea product. In the experiment, the researchers used many compounds, for example, Cuprichydroxide (cas: 20427-59-2Safety of Cuprichydroxide).

Cuprichydroxide (cas: 20427-59-2) belongs to copper catalysts. The applications of Copper-based nanoparticles have received great attention due to the earth-abundant, inexpensive and low toxicity. Due to these characteristics, copper nanoparticles have generated a great deal of interest especially in the field of catalysis. Safety of Cuprichydroxide

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Synthesis and biological activity of novel hydantoin cyclohexyl sulfonamide derivatives as potential antimicrobial agents in agriculture was written by Liu, Wei;Zhang, Shen;Xiao, Lifeng;Wan, Ying;He, Lu;Wang, Kai;Qi, Zhiqiu;Li, Xinghai. And the article was included in Pest Management Science in 2022.HPLC of Formula: 20427-59-2 This article mentions the following:

Plant disease is one of the most serious problems in agriculture that can damage crops. Chem. fungicides are widely used to control plant diseases, but have led to resistance and a series of environmental problems. It is, therefore, necessary to develop highly effective and eco-friendly antimicrobial compounds with novel structures. A series of novel hydantoin cyclohexyl sulfonamide derivatives were synthesized through an intramol. condensation reaction. The bioassay results indicated that a majority of the title compounds displayed potent inhibitory activity against Botrytis cinerea, Sclerotinia sclerotiorum and Erwinia carotorora. The in vivo inhibition rate of compound 3h was 91.01% against B. cinerea, which was higher than that of iprodione (84.07%). Compound 3w showed excellent antifungal activity against B. cinerea with a half-maximal effective concentration (EC50) of 4.80μg ml-1, which is lower than that of iprodione. Compound 3q had an EC50 value of 1.44μg ml-1 against S. sclerotiorum, which was close to that of iprodione (1.39μg ml-1), and the inhibition rate was also similar to that of iprodione. Compounds 3i and 3w had the best inhibition efficacy against S. sclerotiorum, both on growth of the mycelium and sclerotia and in the greenhouse pot test in vitro. Further study showed that compounds 3h, 3r and 3s have superb antibacterial activity against E. carotorora with EC50 values of 2.65, 4.24 and 4.29μg ml-1 resp., and were superior to streptomycin sulfate (5.96μg ml-1). Because of their excellent antifungal and antibacterial activity against B. cinerea, S. sclerotiorum and E. carotorora, these hydantoin cyclohexyl sulfonamide derivatives could be considered as suitable candidates for new antimicrobial agents. In the experiment, the researchers used many compounds, for example, Cuprichydroxide (cas: 20427-59-2HPLC of Formula: 20427-59-2).

Cuprichydroxide (cas: 20427-59-2) belongs to copper catalysts. Copper catalyst has received great attention owing to the low toxicity and low cost. Copper nanoparticles can catalyze the Ullmann coupling reaction in a wide range of applications.HPLC of Formula: 20427-59-2

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Recovery of copper from printed circuit board (PCB) acidic etching wastewater: Ammonia regulates the crystallization of high valued copper salt was written by Guo, Yi;Zheng, Jiayi;Yan, Xu;Liu, Xueming;Xu, Wenbin;Liu, Weizhen;Li, Xiaoqin;Lin, Zhang. And the article was included in Surfaces and Interfaces in 2022.Electric Literature of CuH2O2 This article mentions the following:

In electronic and elec. industries, a huge amount of acidic cupric etching wastewater was produced during the manufacture of printed circuit board (PCB). Reclamation of copper is necessary for resource recovery and environmental protection. Herein, ammonia (NH₃·H₂O) and sodium hydroxide (NaOH) were investigated and compared as neutralizers to regulate the sequential crystallization of basic copper chloride (Cu₂(OH)₃Cl), copper hydroxide (Cu(OH)₂), and copper sulfate (CuSO₄·5H₂O). Crystal phase and micro-morphol. were analyzed by X-ray diffraction and scanning electron microscope; product quality was evaluated by laser particle size analyzer, thermogravimetry, and inductively coupled plasma. The results showed that ammonia as the neutralizer can regulate the formation of spherical Cu₂Cl(OH)₃ particles with compact surface, good fluidity, and low moisture-absorption-ability, which can be used as a precursor to producing Cu(OH)₂ and CuSO₄·5H₂O with higher purity. Mechanism anal. revealed that ammonia acts as ‘a storage of OH^– and Cu²⁺‘ in the aqueous phase due to its weak alkalinity and the ability to complex with Cu²⁺ to form stable Cu(NH₃)²⁺n. As a result, OH- and Cu²⁺ were slowly released to the solution and slowed down the crystallization kinetics of copper-containing precipitates This work proposed a promising and harmless resource recycling method, and also inspired the understanding and utilization of metal crystallization law in the ammonia buffer system. In the experiment, the researchers used many compounds, for example, Cuprichydroxide (cas: 20427-59-2Electric Literature of CuH2O2).

Cuprichydroxide (cas: 20427-59-2) belongs to copper catalysts. Transition metal-catalyzed chemical transformation of organic electrophiles and organometallic reagents belong to the most important cross-coupling reaction in organic synthesis. Copper nanoparticles can also catalyze the coupling reaction of phenols, thiols, xanthogenates, nitrogen-containing nucleophiles, selenium ruthenium nucleophiles and the like.Electric Literature of CuH2O2

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Synergistic activation of peroxymonosulfate for efficient aqueous p-nitrophenol degradation with Cu(II) and Ag(I) in Ag₂Cu₂O₃ was written by Yin, Chuankun;Khan, Aimal;Gao, Qiaohui;Li, Quan;Zhou, Xiaoyun;Liu, Xiuying;Xu, Aihua;Li, Xiaoxia. And the article was included in Separation and Purification Technology in 2022.Electric Literature of CuH2O2 This article mentions the following:

Recently, the development of efficient mixed metal oxide catalysts for organic pollutants degradation via peroxymonosulfate (PMS) activation is a hot topic in the area of wastewater treatment. In this work, the silver-copper mixed-oxide, Ag₂Cu₂O₃ (ACO) was reported for the first time as a highly active catalyst for removing organic pollutants in the presence of PMS. ACO was successfully synthesized from Ag⁺ and Cu²⁺ ions at 60°C, and its structure was strongly influenced by the temperature The catalyst could almost completely remove p-nitrophenol and other pollutants with 0.65 mM PMS after 20 min, and also exhibited satisfactory stability and recyclability. The system efficiency was shown to vary with the concentration of PMS and catalyst, as well as solution pH. Scavenger experiment and EPR anal. indicated that radicals produced by the oxidation of Ag(I) and Cu(I) with PMS could promote degradation reaction. The synergistic effect between Cu and Ag in the bimetallic catalyst was demonstrated to contribute to the high performance: Cu(II)-O-Ag(I) bonds promote the conversion of Cu(II) species to Cu(I) through reaction with PMS, and facilitate the oxidation of Cu(I) and Ag(I) by PMS to generate active radicals. The study provides a feasible strategy to design efficient and stable bimetal oxide catalysts for PMS activation. In the experiment, the researchers used many compounds, for example, Cuprichydroxide (cas: 20427-59-2Electric Literature of CuH2O2).

Cuprichydroxide (cas: 20427-59-2) belongs to copper catalysts. The applications of Copper-based nanoparticles have received great attention due to low toxicity and inexpensive, earth-abundant. Copper nanoparticles can also catalyze the coupling reaction of phenols, thiols, xanthogenates, nitrogen-containing nucleophiles, selenium ruthenium nucleophiles and the like.Electric Literature of CuH2O2

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Spectacular Behavior of a Viscoelastic Droplet Impinging on a Superhydrophobic Mesh was written by Abouei Mehrizi, Abbasali;Lin, Shiji;Sun, Lijie;Chen, Longquan. And the article was included in Langmuir in 2022.Electric Literature of CuH2O2 This article mentions the following:

Spray formation using the droplet impact on the superhydrophobic mesh surfaces is particularly important due to its application in different industries. The present study revealed that adding a trivial amount of the poly(ethylene oxide)s (PEO) polymer to the water droplet can considerably change the impact phenomena on the superhydrophobic mesh surfaces and suppress the spray formation. Droplet rebound is only observed in a narrow range of impact velocities of PEO aqueous droplets when the tiny filaments still connect the surface and droplet. Rebound suppression and deposition of the PEO aqueous droplet is attributed to the higher interaction between the polymer chains and the superhydrophobic mesh surface. After a critical impact velocity and We number which is independent of the PEO concentration, the liquid penetrates the mesh pores. The penetrated liquid formed the ligaments that grow until they reach the maximum length and surprisingly retract back to the mesh surface and the mother droplet. The ligaments destabilized at low PEO concentrations (c = 0.5, 1 g/L) and mesh opening size H = 357μm to the crest swell droplets when the droplet size is reduced by increasing the impact velocity. The ligament fragmentation and droplet detachment are only observed at high impact velocities when c = 0.5, 1 g/L, and H = 357μm. The result shows that the PEO additive does not significantly affect the maximum spreading dynamics. An empirical model to calculate the maximum spreading diameter is developed. In the experiment, the researchers used many compounds, for example, Cuprichydroxide (cas: 20427-59-2Electric Literature of CuH2O2).

Cuprichydroxide (cas: 20427-59-2) belongs to copper catalysts. The applications of Copper-based nanoparticles have received great attention due to the earth-abundant, inexpensive and low toxicity. Due to these characteristics, copper nanoparticles have generated a great deal of interest especially in the field of catalysis. Electric Literature of CuH2O2

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”