Day: February 6, 2023

In situ electrochemical reductive construction of metal oxide/metal-organic framework heterojunction nanoarrays for hydrogen peroxide sensing was written by Jiang, Lipei;Wang, Haitao;Rao, Zhuang;Zhu, Jiannan;Li, Guangfang;Huang, Qin;Wang, Zhengyun;Liu, Hongfang. And the article was included in Journal of Colloid and Interface Science in 2022.Recommanded Product: Cuprichydroxide This article mentions the following:

Transition metal oxide/metal-organic framework heterojunctions (TMO@MOF) that combine the large sp. surface area of MOFs with TMOs′ high catalytic activity and multifunctionality, show excellent performances in various catalytic reactions. Nevertheless, the present preparation approaches of TMO@MOF heterojunctions are too complex to control, stimulating interests in developing simple and highly controllable methods for preparing such heterojunction. In this study, we propose an in situ electrochem. reduction approach to fabricating Cu₂O nanoparticle (NP)@CuHHTP heterojunction nanoarrays with a graphene-like conductive MOF CuHHTP (HHTP is 2,3,6,7,10,11-hexahydroxytriphenylene). We have discovered that size-controlled Cu₂O nanoparticles could be in situ grown on CuHHTP by applying different electrochem. reduction potentials. Also, the obtained Cu₂O NP@CuHHTP heterojunction nanoarrays show high H₂O₂ sensitivity of 8150.6 μA·mM-1·cm2 and satisfactory detection performances in application of measuring H₂O₂ concentrations in urine and serum samples. This study offers promising guidance for the synthesis of MOF-based heterojunctions for early cancer diagnosis. 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 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 also catalyze the coupling reaction of nitrogen-containing nucleophiles, phenols, thiols, xanthogenates, selenium ruthenium nucleophiles and the like.Recommanded Product: Cuprichydroxide

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

High-Precision Nonenzymatic Electrochemical Glucose Sensing Based on CNTs/CuO Nanocomposite was written by Geetha, Mithra;Maurya, Muni Raj;Al-maadeed, Somaya;Muthalif, Asan Abdul;Sadasivuni, Kishor Kumar. And the article was included in Journal of Electronic Materials in 2022.Formula: CuH2O2 This article mentions the following:

The measurement of blood glucose levels is essential for diagnosing and managing diabetes. Enzymic and nonenzymic approaches using electrochem. biosensors are used to measure serum or plasma glucose accurately. Current research aims to develop and improve noninvasive methods of detecting glucose in sweat that are accurate, sensitive, and stable. The carbon nanotube (CNT)-copper oxide (CuO) nanocomposite (NC) improved direct electron transport to the electrode surface in this study. The complex precipitation method was used to make this NC. X-ray diffraction (XRD) and SEM were used to investigate the crystal structure and morphol. of the prepared catalyst. Using cyclic voltammetry and amperometry, the electrocatalytic activity of the as-prepared catalyst was evaluated. The electrocatalytic activity in artificial sweat solution was examined at various scan rates and at various glucose concentrations The detection limit of the CNT-CuO NC catalyst was 3.90μM, with a sensitivity of 15.3 mA cm^-2 μM^-1 in a linear range of 5-100μM. Furthermore, this NC demonstrated a high degree of selectivity for various bio-compounds found in sweat, with no interfering cross-reactions from these species. The CNT-CuO NC, as produced, has good sensitivity, rapid reaction time (2 s), and stability, indicating its potential for glucose sensing. 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. 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.Formula: CuH2O2

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

DFT study of hydrogen bonding between metal hydroxides and organic molecules containing nitrogen, oxygen, sulfur, and phosphorus heteroatoms and clusters vs. surfaces was written by Gasparic, Lea;Poberznik, Matic;Kokalj, Anton. And the article was included in Chemical Physics in 2022.Name: Cuprichydroxide This article mentions the following:

Hydrogen bonds between either a water mol. or metal hydroxides and small organic mols. with functional groups that contain N, O, S, or P heteroatoms were analyzed using DFT calculations to shed some light on the question of whether hydroxylated nanoparticles and surfaces can be stabilized with organic mols. via hydrogen bonding interactions. Two different models of metal hydroxides were used, i.e., small discrete clusters and periodic slab models of surfaces, where Al(OH)₃ and Cu(OH)₂ served as model systems. For small discrete cluster models, formula units of Al(OH)₂ and Cu(OH)₂ were taken, whereas for extended surface models, boehmite-AlOOH(010) and Cu(OH)2(001) surfaces were used. According to our results, the Cu(OH)₂ cluster is usually a better H-bond acceptor and donor than the water mol., whereas the Al(OH)₃ cluster prefers to either act as an H-bond donor or to form two H-bonds, one as an H-bond donor and the other as an H-bond acceptor. Among the considered organic mols. with functional groups containing N, O, S, or P heteroatoms, imidazole and (CH₃)₂POOH form the strongest H-bonds; the two mols. are very good H-bond acceptors as well as H-bond donors. These two mols. were also used to analyze hydrogen bonding with the boehmite-AlOOH(010) and Cu(OH)2(001) surfaces. The comparison between the surface and small-cluster calculations reveals that although cluster calculations can give reasonable estimates of adsorption energy provided that all formed H-bonds are properly accounted for (which is not always trivial), there are nevertheless structural intricacies-such as addnl. H-bonds with second-neighbor OH groups that may form on surfaces-that cannot be captured with small clusters. The more realistic aqueous conditions were also analyzed using the continuum solvation model. They not only influence the properties of H-bonds that are usually shorter than in vacuum but also induce deprotonation of adsorbed mols., as observed for (CH₃)₂POOH on a Cu(OH)₂ surface. In the experiment, the researchers used many compounds, for example, Cuprichydroxide (cas: 20427-59-2Name: 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. Copper nanoparticles can also catalyze the coupling reaction of nitrogen-containing nucleophiles, phenols, thiols, xanthogenates, selenium ruthenium nucleophiles and the like.Name: Cuprichydroxide

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

Broiler responses to copper levels and sources: growth, tissue mineral content, antioxidant status and mRNA expression of genes involved in lipid and protein metabolism was written by da Cruz Ferreira, Helvio Junior;da Silva, Diego Ladeira;de Carvalho, Bruno Reis;de Oliveira, Haniel Cedraz;Cunha Lima Muniz, Jorge;Alves, Warley Junior;Eugene Pettigrew, James;Eliza Facione Guimaraes, Simone;da Silva Viana, Gabriel;Hannas, Melissa Izabel. And the article was included in BMC Veterinary Research in 2022.SDS of cas: 20427-59-2 This article mentions the following:

Five hundred 8-d old male broilers Cobb500 were randomly allotted into 10 treatments in factorial arrangement with 5 Cu levels (0, 4, 8, 12, and 16 mg/kg), and 2 sources (Cu proteinate, CuPro and Cu sulfate, CuSO4.5H2O) for a 10-d-experiment Feed conversion ratio (FCR) was better (P < 0.05) in CuPro fed chicks compared with CuSO4.5H2O group. Average daily feed intake (ADFI) decreased linearly (P < 0.05) as dietary Cu increased. A quadratic response (P < 0.05) to Cu levels was found for FCR, being optimized at 9.87 and 8.84 mg Cu/kg in CuPro and CuSO4.5H2O diets, resp. Copper supplementation linearly increased liver Cu content (P < 0.05) and tended to linearly increase (P = 0.07) phosphorus (P) and copper in tibia. Manganese and zinc were higher (P < 0.05) in tibia of CuPro fed birds. Broilers fed CuPro exhibited lower liver iron (P < 0.05) content, lower activities of Cu, Zn superoxide dismutase (CuZnSOD) in breast muscle and liver, and glutathione peroxidase in liver. Glutathione peroxidase reduced linearly (P < 0.05) with CuPro levels and increased linearly (P < 0.05) with CuSO4.5H2O levels and were lower (P < 0.05) in all CuPro levels in breast muscle. Breast muscle malondialdehyde concentration tended to be higher (P = 0.08) in broilers fed CuSO4.5H2O. Copper levels linearly increased (P < 0.05) metallothionein (MT) and malate dehydrogenase (MDH) expression in liver, and six-transmembrane epithelial antigen of the prostate-1 (STEAP-1) in the intestine. Copper elicited a quadratic response (P < 0.050) in AKT-1 and mammalian target of rapamycin (mTOR) in breast muscle, CuZnSOD in liver and antioxidant 1 copper chaperone (ATOX 1) in intestine. Broilers fed CuPro exhibited higher mRNA expression of mTOR in muscle breast and lower CuZnSOD in liver and ATOX 1 in intestine. Interaction (P < 0.05) between levels and sources was found in mRNA expression for GSK-3β, MT, and CuZnSOD in breast muscle, FAS and LPL in liver and MT and CTR1 in intestine. CuPro showed beneficial effects on feed conversion and bone mineralization. Organic and inorganic Cu requirements are 9.87 and 8.84 mg Cu/kg, resp. 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 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 also catalyze the coupling reaction of nitrogen-containing nucleophiles, phenols, thiols, xanthogenates, selenium ruthenium nucleophiles and the like.SDS of cas: 20427-59-2

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

3D Printing of Multiscale Ti64-Based Lattice Electrocatalysts for Robust Oxygen Evolution Reaction was written by Guo, Binbin;Kang, Jiahui;Zeng, Tianbiao;Qu, Hongqiao;Yu, Shixiang;Deng, Hui;Bai, Jiaming. And the article was included in Advanced Science (Weinheim, Germany) in 2022.Name: Cuprichydroxide This article mentions the following:

Elec. assisted water splitting is an endurable strategy for hydrogen production, but the sluggish kinetics of oxygen evolution reaction (OER) extremely restrict the large-scale production of hydrogen. Developing highly efficient and non-precious catalytic materials is essential to accelerate the sluggish kinetics of OER. However, currently used catalyst supports, such as copper foam, suffer from inferior corrosion resistance and structural stability, resulting in the disabled functionality of 3D conductive networks. To this end, a novel 3D freestanding electrode with corrosion-resistant and robust Ti-6Al-4V titanium alloy lattice as the catalyst support is designed via a 3D printing technol. of selective laser melting. After the coating of core-shell Cu(OH)2@CoNi carbonate hydroxides (CoNiCH) on the designed lattice, a unique micro/nano-sized hierarchical porous structure is formed, which endows the electrocatalyst with a promising electrocatalytic activity (a low overpotential of 355 mV at 30 mA cm^-2 and Tafel slope of 125.3 mV dec^-1). Computational results indicate that the CoNiCH exhibits optimized electron transfer and the catalytic activity of the Ni site is higher than that of the Co site in the CoNiCH. Therefore, the integration of robust catalyst supports and highly active materials opens up an avenue for reliable and high-performance OER electrocatalysts. In the experiment, the researchers used many compounds, for example, Cuprichydroxide (cas: 20427-59-2Name: Cuprichydroxide).

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.Name: Cuprichydroxide

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

Trinitro-orcinolate and Trinitro-resorcinate – Sensitivity Trends in Nitroaromatic Energetic Materials was written by M. J. Endrass, Simon;Neuer, Andreas;Klapotke, Thomas M.;Stierstorfer, Jorg. And the article was included in ChemistrySelect in 2022.HPLC of Formula: 20427-59-2 This article mentions the following:

5-Methyl-2,4,6-trinitrobenzene-1,3-diol (trinitro-orcinol, H₂TNO) as a close structural relative to the well-known energetic materials trinitroresorcinol (styphnic acid) and trinitrotoluene (TNT) is prepared in high purity and analyzed concerning its vapor pressure using the transpiration method. Several energetic coordination compounds (ECCs) of its resp. anion were produced and compared with structurally close styphnate complexes to give an insight into physiochem. trends of the ECC. The synthesized compounds were further analyzed by elemental anal., IR spectroscopy, DTA and low temperature X-ray diffraction anal. To classify the reported compounds among the energetic materials, they were tested for their sensitivities towards mech. stimuli such as impact, friction and electrostatic discharge as well as their behavior towards flame. 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 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.HPLC of Formula: 20427-59-2

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

Boosting the Productivity of Electrochemical CO₂ Reduction to Multi-Carbon Products by Enhancing CO₂ Diffusion through a Porous Organic Cage was written by Chen, Chunjun;Yan, Xupeng;Wu, Yahui;Liu, Shoujie;Zhang, Xiudong;Sun, Xiaofu;Zhu, Qinggong;Wu, Haihong;Han, Buxing. And the article was included in Angewandte Chemie, International Edition in 2022.HPLC of Formula: 20427-59-2 This article mentions the following:

Electroreduction of CO₂ into valuable fuels and feedstocks offers a promising way for CO₂ utilization. However, the commercialization is limited by the low productivity. Here, we report a strategy to enhance the productivity of CO₂ electroreduction by improving diffusion of CO₂ to the surface of catalysts using porous organic cages (POCs) as an additive. It was noted that the Faradaic efficiency (FE) of C2+ products could reach 76.1 % with a c.d. of 1.7 A cm^-2 when Cu-nanorod(nr)/CC3 (one of the POCs) was used, which were much higher than that using Cu-nr. Detailed studies demonstrated that the hydrophobic pores of CC3 can adsorb a large amount of CO₂ for the reaction, and the diffusion of CO₂ in the CC3 to the nanocatalyst surface is easier than that in the liquid electrolyte. Thus, more CO₂ mols. make contact with the nanocatalysts in the presence of CC3, enhancing CO₂ reduction and inhibiting generation of H₂. 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 has continued to be one of the most utilized and important transition metal catalysts in synthetic organic chemistry. 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. HPLC of Formula: 20427-59-2

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

Facile Route to Synthesize Cu, S, N-Doped Carbon as Highly Efficient and Durable Electrocatalyst Towards Oxygen Reduction Reaction was written by Zhao, Yiwei;Yu, Yue;Wang, Yuanhong;Ma, Jicheng;Xing, Shuangxi. And the article was included in Catalysis Letters in 2022.Recommanded Product: 20427-59-2 This article mentions the following:

Abstract: This paper reports the generation of a type of carbon-based catalyst co-doped by Cu, S and N as efficient ORR catalysts in alk. media. The electrocatalyst performs superior activity for ORR with onset and a half-wave potential (E_1/2) of 0.945 V and 0.847 V, resp., in 0.1 M KOH, comparable with Pt/C (0.955 V and 0.88 V). Especially, a c.d. of 5.55 mA cm^-2 is achieved, rivaling that of the com. Pt/C (5.21 mA cm^-2). The high ORR activity is attributed to the pos. effects of the different doping elements that introduce amounts of active sites, including defects, and efficient bonding between Cu, S, N and C atoms that contribute to ORR. Moreover, it shows great durability and strong methanol tolerance. Graphic Abstract: [graphic not available: see fulltext]. 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 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.Recommanded Product: 20427-59-2

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

Antagonistic effect of electrochemical corrosion on the mechanical wear of Monel 400 alloy in seawater was written by Zhu, Yuhua;Liu, Hao;Wang, Jianzhang;Yan, Fengyuan. And the article was included in Corrosion Science in 2022.Safety of Cuprichydroxide This article mentions the following:

The tribocorrosion behavior as well as the corrosion-wear interaction of Monel 400 alloy in seawater were investigated under varied loads. An abnormal antagonistic effect of corrosion on wear was found, which was highly related to the peculiar corrosion products in the shape of nanospheres only generated under the tribocorrosion condition due to the selective corrosion of Ni-rich components. A boundary lubrication layer, consisting of the nanospheres squeezed and spread by friction stress, leaded to the reduction of friction coefficient Moreover, the material loss rate was greatly alleviated because the friction-induced surface delamination and sub-surface crack propagation were prevented. 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, low toxicity and inexpensive. 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.Safety of Cuprichydroxide

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

A Green Approach for High Oxidation Resistance, Flexible Transparent Conductive Films Based on Reduced Graphene Oxide and Copper Nanowires was written by Lin, Ya-Ting;Huang, Da-Wei;Huang, Pin-Feng;Chang, Li-Chun;Lai, Yi-Ting;Tai, Nyan-Hwa. And the article was included in Nanoscale Research Letters in 2022.Category: copper-catalyst This article mentions the following:

Copper nanowires (CuNWs)-based thin film is one of the potential alternatives to tin-doped indium oxide (ITO) in terms of transparent conductive films (TCFs). However, the severe problem of atm. oxidation restricts their practical applications. In this work, we develop a simple approach to fabricate highly stable TCFs through the dip-coating method using reduced graphene oxide (rGO) and CuNWs as the primary materials. Compared with previous works using toxic reduction agents, herein, the CuNWs are synthesized via a green aqueous process using glucose and lactic acid as the reductants, and rGO is prepared through the modified Hummers ‘ method followed by a hydrogen-annealing process to form hydrogen-annealing-reduced graphene oxide (h-rGO). In the rGO/CuNWs films, the dip-coated graphene oxide layer can increase the adhesion of the CuNWs on the substrate, and the fabricated h-rGO/CuNWs can exhibit high atm. oxidation resistance and excellent flexibility. The sheet resistance of the h-rGO/CuNWs film only increased from 25.1 to 42.2 Ω/sq after exposure to ambient atm. for 30 days and remained almost unchanged after the dynamic bending test for 2500 cycles at a constant radius of 5.3 mm. The h-rGO/CuNWs TCF can be not only fabricated via a route with a superior inexpensive and safe method but also possessed competitive optoelectronic properties with high elec. stability and flexibility, demonstrating great opportunities for future optoelectronic applications. 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. The applications of Copper-based nanoparticles have received great attention due to low toxicity and inexpensive, earth-abundant. 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. Category: copper-catalyst

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