Month: January 2023

Copper(II)-β-cyclodextrin immobilized on graphitic carbon nitride nanosheets as a highly effective catalyst for tandem oxidative amidation of benzylic alcohols was written by Ghafuri, Hossein;Rashidizadeh, Afsaneh;Gorab, Mostafa Ghafori;Jafari, Ghazaleh. And the article was included in Scientific Reports in 2022.Recommanded Product: 20427-59-2 This article mentions the following:

In this study, an efficient catalyst based on graphitic carbon nitride nanosheets (CN) and copper(II) supported β-cyclodextrin (βCD/Cu(II)) was synthesized and used for tandem oxidative amidation of benzylic alcs. using amine hydrochloride salts to form aryl-amides R¹C(O)NR²R³ [R¹ = H, 4-Cl, 4-OMe, etc.; R² = H, Ph, Bn, etc.]. In this regard, CN was functionalized by β-CD/Cu(II) via 1,3-dibromopropane linker (CN-Pr-β-CD/Cu(II)). The prepared catalyst was characterized using FT-IR, XRD, FE-SEM, EDS, TGA, ICP-OES, BET and TEM analyses. CN-Pr-β-CD/Cu(II) could be recycled and reused five times without significant reduction in reaction efficiency. In the experiment, the researchers used many compounds, for example, Cuprichydroxide (cas: 20427-59-2Recommanded Product: 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. Copper nanoparticles can catalyze the Ullmann coupling reaction in a wide range of applications.Recommanded Product: 20427-59-2

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

Efficient CO₂ Electrochemical Reduction by a Robust Electrocatalyst Fabricated by Electrodeposition of Indium and Zinc over Copper Foam was written by Sirisomboonchai, Suchada;Machida, Hiroshi;Bao Tran, Khuyen Viet;Kawasumi, Masaya;Norinaga, Koyo. And the article was included in ACS Applied Energy Materials in 2022.Formula: CuH2O2 This article mentions the following:

Electrochem. reduction of CO₂ comprising the CO₂ reduction reaction (CO₂RR) and O evolution reaction (OER) is one of the most promising technologies for electrification of the chem. process industry. Here, the performance of a electrocatalyst with a three-dimensional structure of InZnCu on Cu foam (CF) is presented. This electrocatalyst was fabricated by electrodeposition of In and Zn over Cu and exhibited a superior reduction of CO₂ to CO at a faradaic efficiency of 93.7% at -0.7 V and an excellently long duration of 100 h. Due to the synergy of the thin In layer, the Zn nanosheets provided a high surface-active area and strong mech. robustness during the reaction. Addnl., a two-electrode system was constructed based on the CF-modified surface, which provided valuable guidelines on the overall CO₂RR-OER system for further evolution. Also, due to the facile synthesis, the bimetal-layer double hydroxide (LDH) exhibited high conductivity and high OER performance. Hence, the two-electrode system assembled excellent electrocatalysts for the CO₂RR-OER (InZnCu/CF||Cu(OH)₂ NWs@NiCo-LDH/CF) with high conversions of CO₂ to CO of 67% and 88% at 2 and 50 mA cm^-2, resp. Notably, the CO₂RR-OER system exhibited excellent stability in a 40 h CO₂ conversion with a constant c.d. of 2 mA cm^-2 at an ultralow voltage of 1.59 V. Also, the calculation of the energy input converting CO per ton of CO₂ resulted in a low energy input range for further development in scalability. This overall CO₂RR-OER proposes development in electrochem. CO₂ reduction for industrial applications. In the experiment, the researchers used many compounds, for example, Cuprichydroxide (cas: 20427-59-2Formula: CuH2O2).

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.Formula: CuH2O2

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

Catalysis of the water oxidation reaction in the presence of iron and a copper foil was written by Akbari, Mohammad Saleh Ali;Najafpour, Mohammad Mahdi. And the article was included in Inorganic Chemistry in 2022.Application of 20427-59-2 This article mentions the following:

The oxygen evolution reaction (OER) can provide electrons for reducing water, carbon dioxide, and ammonia. On the other hand, copper compounds are among the most interesting OER catalysts. In this study, water oxidation of a Cu foil in the presence of K₂FeO₄, a soluble Fe source, under alk. conditions (pH ≈ 13) is investigated using electrochem. methods, X-ray diffraction, XPS, in situ visible spectroelectrochem., Raman spectroscopy, and SEM. After the reaction of the Fe salt with the Cu foil, a remarkable improvement for OER is recorded, which indicates that either the Fe ions on the copper foil directly participate in OER or these ions are critical for activating copper ions on the surface toward OER. Indeed, a remarkable decrease (130 mV) in the overpotential is recorded for the Cu foil in the presence of [FeO₄]^2-. Tafel slopes for the Cu foil in the absence and presence of K₂FeO₄ are 113.2 and 46.4 mV/decade, resp. XPS shows that there is a strong interaction between Cu(II) and Fe(III) on the surface of the Cu foil. During OER in the presence of Cu(II) (hydr)oxide, Cu(III) is detected. In situ visible spectroelectrochem. shows that Cu and Fe ions are dynamically active and precipitate on the surface of the counter electrode during cyclic voltammetry (CV). The isotopic exptl. data using H₂¹⁸O based on Raman spectroscopy show that there is no change in the lattice oxygen. All of these experiments adopt a new perspective on the role of Fe in OER in the presence of a Cu foil under alk. conditions. 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. Copper catalyst has received great attention owing to the low toxicity and low cost. The copper-mediated C-C, C-O, C-N, and C-S bond formation is a part of one oldest reaction, emphasizing the Ullmann cross-coupling reaction.Application of 20427-59-2

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

High absorbent polyvinylidene fluoride composite membrane based on β-cyclodextrin and ZIF-8 for rapid removing of heavy metal ions was written by Chen, Chunyan;Liu, Qian;Chen, Wanxin;Li, Fangzhou;Xiao, Guoqing;Chen, Chunlin;Li, Ruili;Zhou, Jian. And the article was included in Separation and Purification Technology in 2022.Product Details of 20427-59-2 This article mentions the following:

With accelerated industrial development and serious environmental issues, removing heavy metal ions from industrial discharge effluents is a significant subject. In the present paper, a novel absorbent polyvinylidene fluoride (PVDF) composite membrane based on β-cyclodextrin and zeolitic imidazole skeleton-8 (β-CD@ZIF-8) nanoparticles was prepared through the deep-permeation method. The nanoparticles are assembled in situ in PVDF membrane pores and anchored in each membrane pore along the membrane thickness direction. The batch adsorption experiment and characterization anal. were conducted to further investigate the performance of the composite membrane for the removal of Pb²⁺ and Cu²⁺ from wastewater. The results showed that the saturation adsorption capacities of β-CD@ZIF-8/PVDF micro membrane adsorbers for Pb²⁺ and Cu²⁺ were 708.130 and 651.379 mg/g, resp., which were remarkably higher than those of powder materials of β-CD@ZIF-8 and other porous materials due to the intensified contact within the confined space and more active sites provided within the membrane pores. The novel absorbent membrane behaved with excellent absorption capacity, demonstrating the tremendous potential for industrial applications. In the experiment, the researchers used many compounds, for example, Cuprichydroxide (cas: 20427-59-2Product Details 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. Copper nanoparticles can catalyze the Ullmann coupling reaction in a wide range of applications.Product Details of 20427-59-2

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

Research on the Catalytic Hydrolysis of COS by Fe-Cu/AC Catalyst and Its Inactivation Mechanism at Low Temperature was written by Han, Hehe;Zhang, Zhihong;Zhang, Yaolei. And the article was included in ChemistrySelect in 2022.Recommanded Product: 20427-59-2 This article mentions the following:

For removing carbonyl sulfide (COS) from industrial waste gas at low temperatures, the critical approach is to prepare an efficient and cheap catalyst. In this paper, Fe/Cu modified coal-based activated carbon (AC) was prepared by co-precipitation method and tested for the catalytic hydrolysis of carbonyl sulfide (COS) at low temperatures in a fixed-bed reactor. The results showed that the best mole ratio of Fe/Cu was 1 : 1 and the best content of metal oxides was 50 %. BET, XRD, XPS, FTIR, and SEM investigated the structure and surface properties. COS was hydrolyzed on Fe₂O₃ to produce H₂S and CO₂, and H₂S reacted with CuO to have CuS. At the same time, H₂S reacted with Fe₂O₃ to produce FeS and elementary sulfur. Oxidized elemental sulfur was to form sulfuric acid, which responded with Fe₂O₃ to form sulfates. The sulfates would be deposited on the catalysts surface and block the pore structure. Deactivation of metal oxides and blockage of pore structures were the main reason for catalyst deactivation. In the experiment, the researchers used many compounds, for example, Cuprichydroxide (cas: 20427-59-2Recommanded Product: 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, low toxicity and inexpensive. Copper nanoparticles can also catalyze the coupling reaction of nitrogen-containing nucleophiles, phenols, thiols, xanthogenates, selenium ruthenium nucleophiles and the like.Recommanded Product: 20427-59-2

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

Integration of ultrafine CuO nanoparticles with two-dimensional MOFs for enhanced electrochemical CO₂ reduction to ethylene was written by Wang, Linlin;Li, Xin;Hao, Leiduan;Hong, Song;Robertson, Alex W.;Sun, Zhenyu. And the article was included in Chinese Journal of Catalysis in 2022.Recommanded Product: Cuprichydroxide This article mentions the following:

To facilitate the electrochem. CO₂ reduction (ECR) to fuels and valuable chems., the development of active, low cost, and selective catalysts is crucial. We report a novel ECR catalyst consisting of CuO nanoparticles with sizes ranging from 1.4 to 3.3 nm anchored on Cu metal-organic framework (Cu-MOF) nanosheets obtained through a one-step facile solvothermal method. The nanocomposites provide multiple sites for efficient ambient ECR, delivering an average C₂H₄ faradaic efficiency (FE) of ∼50.0% at -1.1 V (referred to the reversible hydrogen electrode) in 0.1 mol/L aqueous KHCO3 using a two-compartment cell, in stark contrast to a C₂H₄ FE of 25.5% and 37.6% over individual CuO and Cu-MOF resp., also surpassing most newly reported Cu-based materials under similar cathodic voltages. The C₂H₄ FE remains at over 45.0% even after 10.0 h of successive polarization. Also, a ∼7.0 mA cm^-2 C₂H₄ partial geometric c.d. and 27.7% half-cell C₂H₄ power conversion efficiency are achieved. The good electrocatalytic performance can be attributed to the interface between CuO and Cu-MOF, with accessible metallic moieties and the unique two-dimensional structure of the Cu-MOF enhancing the adsorption and activation of CO₂ mols. This finding offers a simple avenue to upgrading CO₂ to value-added hydrocarbons by rational design of MOF-based composites. In the experiment, the researchers used many compounds, for example, Cuprichydroxide (cas: 20427-59-2Recommanded Product: Cuprichydroxide).

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. The copper-mediated C-C, C-O, C-N, and C-S bond formation is a part of one oldest reaction, emphasizing the Ullmann cross-coupling reaction.Recommanded Product: Cuprichydroxide

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

In vitro pesticides susceptibility of Erwinia sp. causing papaya (Carica papaya) black rot in Okinawa, Japan and captan effectiveness on papaya pot seedlings was written by Hanagasaki, Takashi;Takushi, Tetsuya;Kawano, Shinji;Yamashiro, Maki. And the article was included in Journal of General Plant Pathology in 2022.Formula: CuH2O2 This article mentions the following:

Since 2002, papaya black rot has been spreading over several islands of Okinawa Prefecture. The pathogen of the disease was identified as Erwinia sp., genetically close to E. mallotivora and E. papayae. In terms of the disease transmission, it is probably carried by the wind or rain. In order to devise a prevention strategy for the disease, in vitro pesticides susceptibility of the pathogen and tests with papaya pot seedlings were conducted. A min. inhibitory concentration assay demonstrated that copper (II) hydroxide, basic copper sulfate, and captan present in the papaya-registered pesticides inhibited the growth of the pathogen on nutrient agar plates. In addition, mancozeb that is non-papaya-registered pesticide also showed an inhibitory effect on the pathogen. Thus, there is a high possibility that even the existing papaya-registered or non-papaya-registered pesticides can prevent papaya black rot. In the test with papaya pot seedlings, copper (II) hydroxide exerted a relatively lower pesticide effect; however, captan exhibited a pesticide effect, although it is one of the fungicides not registered for use in the treatment of bacterial diseases of plants in Japan till date. Indeed, based on the result of the present study, the official registration of legal expansion for use of captan to control papaya black rot was approved in Japan on Dec. 22, 2021. In the experiment, the researchers used many compounds, for example, Cuprichydroxide (cas: 20427-59-2Formula: CuH2O2).

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. These ligands enable the reaction promoted in mild condition. The reaction scope has also been greatly expanded, rendering this copper-based cross-coupling attractive for both academia and industry. Formula: CuH2O2

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

Metallic coloration and multifunctional preparation on fabrics via nitriding reactive sputtering with copper and titanium targets was written by Huang, Mei-Lin;Wu, Ying-Zhu;Liu, Zhi-Kai;Lu, Sheng-Guo. And the article was included in Vacuum in 2022.Application In Synthesis of Cuprichydroxide This article mentions the following:

Metallic coloration and multiple functions were prepared on polyester woven fabrics via nitriding reactive magnetron sputtering with copper and titanium targets. The resulting colors ranged from light gray to pale yellow. The color of the copper film-coated fabrics was affected by elemental Cu, Cu₂O, and Cu(OH)₂ in the films. These species had a bandgap of 2.16 eV and a corresponding absorption edge of 574 nm. The color of the titanium film-coated fabrics was tuned via TiO₂ and TiON with a bandgap of 2.35 eV and a corresponding absorption edge of 528 nm. The films’ color brightness and the optical bandgap decreased with a red shift in the absorption edge for the absorption of visible light. This phenomenon increased as the film thickness increased with increasing sputtering current. The UV protection performance of the copper film-coated fabrics was significantly and rapidly improved by increasing the sputtering current. An average UPF of 234.1 and an average improvement of 287.3% were obtained for the CuN series samples. The elimination of static electricity was improved for the two series of coated fabrics. This research offers a reference for structural coloration or metallic coloration on textiles and the preparation of functional textiles. In the experiment, the researchers used many compounds, for example, Cuprichydroxide (cas: 20427-59-2Application In Synthesis of Cuprichydroxide).

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. The copper-mediated C-C, C-O, C-N, and C-S bond formation is a part of one oldest reaction, emphasizing the Ullmann cross-coupling reaction.Application In Synthesis of Cuprichydroxide

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

Nasal Cavity Inspired Micro-Nanostructured Cone Array Tube for Oil Recovery in Wastewater was written by Wang, Bing;Dai, Haoyu;Zhang, Chunhui;Dong, Zhichao;Li, Kan;Jiang, Lei. And the article was included in Advanced Materials Interfaces in 2022.HPLC of Formula: 20427-59-2 This article mentions the following:

Wastewater containing oil and surfactant pollution causes health, environment, and resource issues. Surfactant-stabilized emulsion separation is conventionally achieved by modified sponges, membranes and micro-nanoparticles, still, with relevant limitations in low durability, high energy consumption, and discontinuity. Inspired by nasal cavity, a superhydrophobic/superoleophilic nanowires decorated cone array tube with penetrated pores is demonstrated for oil recovery in micron-sized oil-in-water emulsions. The exptl. results reveal that the separation efficiency can reach 99.84% and the oil recovery efficiency can achieve 92% at the same time. Oil droplets are captured by cones under the synergy of superwettability and gradient structure, and then transport driven by the force of Laplace pressure. The whole process of oil recovery in wastewater is continuous, durable, and versatile for different oil/surfactant contents. This work will effectively control wastewater pollution and facilitate oil resource recovery, and opens the possibility of phase separation in various applications, such as chip microfluidics, beverage refining, and drug screening. 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. Transition metal-catalyzed chemical transformation of organic electrophiles and organometallic reagents belong to the most important cross-coupling reaction in organic synthesis. Copper of different valence states can be used to catalyze the coupling reaction, especially the Ullmann coupling reaction. HPLC of Formula: 20427-59-2

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

The influence of reaction and annealing temperature on physical and magnetic properties of CuFe₂O₄ nanoparticles : Hydrothermal method was written by Priyadharsini, R.;ShyamalDas;Venkateshwarlu, M.;Deenadayalan, K.;Manoharan, C.. And the article was included in Inorganic Chemistry Communications in 2022.Application of 20427-59-2 This article mentions the following:

Pure copper ferrite nanoparticles (CuFe₂O₄ NPs) were synthesized by using a simple hydrothermal method and annealed at different levels of temperatures The single-phase cubic spinel structure was confirmed by x-ray diffraction pattern and average crystallite size increases from 34 to 42 nm as the annealing temperature increases. FTIR spectra confirmed metal oxides Fe-O and Cu-O, the formation of pure spinel magnetic copper ferrite nanoparticles. The five Raman active modes of vibrations confirmed the cubic structure of prepared yield (A_1g + E_g + 3T_2g). The average particle size identified by TEM anal. exists within the nano range with cubic structures. The magnitudes of the zeta potential indicated the potential stability and surface charge of the nanoparticles. The pore size was estimated by BJH technique and the obtained distribution as 18.5 nm in diameter The optical study revealed the decreasing nature of the bandgap with increasing annealing temperature The dielec. parameters were analyzed with varying frequency range and decreasing nature of dielec. loss is suitable for microwave application. The influence of annealing temperature revealed the increase of saturation magnetization, remanence and coercivity owing to the increased crystallite size. The electrochem. analyses of as-prepared and the annealed (750°) CuFe₂O₄ NPs exhibited high specific capacitance at a low scan rate which indicates the good result for supercapacitor application. 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 the earth-abundant, inexpensive and low toxicity. The copper-mediated C-C, C-O, C-N, and C-S bond formation is a part of one oldest reaction, emphasizing the Ullmann cross-coupling reaction.Application of 20427-59-2

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