Month: February 2023

Structural evolution and strain generation of derived-Cu catalysts during CO₂ electroreduction was written by Lei, Qiong;Huang, Liang;Yin, Jun;Davaasuren, Bambar;Yuan, Youyou;Dong, Xinglong;Wu, Zhi-Peng;Wang, Xiaoqian;Yao, Ke Xin;Lu, Xu;Han, Yu. And the article was included in Nature Communications in 2022.Reference of 20427-59-2 This article mentions the following:

Copper (Cu)-based catalysts generally exhibit high C²⁺selectivity during the electrochem. CO₂ reduction reaction (CO₂RR). However, the origin of this selectivity and the influence of catalyst precursors on it are not fully understood. We combine operando X-ray diffraction and operando Raman spectroscopy to monitor the structural and compositional evolution of three Cu precursors during the CO₂RR. The results indicate that despite different kinetics, all three precursors are completely reduced to Cu(0) with similar grain sizes (∼11 nm), and that oxidized Cu species are not involved in the CO₂RR. Furthermore, Cu(OH)₂– and Cu₂(OH)₂CO₃-derived Cu exhibit considerable tensile strain (0.43%∼0.55%), whereas CuO-derived Cu does not. Theor. calculations suggest that the tensile strain in Cu lattice is conducive to promoting CO₂RR, which is consistent with exptl. observations. The high CO₂RR performance of some derived Cu catalysts is attributed to the combined effect of the small grain size and lattice strain, both originating from the in situ electroreduction of precursors. These findings establish correlations between Cu precursors, lattice strains, and catalytic behaviors, demonstrating the unique ability of operando characterization in studying electrochem. processes. In the experiment, the researchers used many compounds, for example, Cuprichydroxide (cas: 20427-59-2Reference of 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. 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.Reference of 20427-59-2

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

Limitations of conventional sulphidisation in restoring the floatability of oxidised chalcocite was written by Moimane, Tiisetso;Peng, Yongjun. And the article was included in Minerals Engineering in 2022.Recommanded Product: Cuprichydroxide This article mentions the following:

The secondary copper sulfide mineral, chalcocite, is the second most important copper mineral and its flotation is significantly affected by the surface oxidation There is scarcity of reports on sulphidisation of oxidised chalcocite and literature suggests that the conventional sulphidisation experiences difficulties in activating sulfides that are prone to oxidation Thus the objective of this study was to understand the sulphidisation of chalcocite, the copper sulfide most prone to surface oxidation To achieve this, surface anal. by Cryogenic XPS, Cyclic Voltammetry measurements and flotation tests were adopted. It was found that the lower flotation recovery of the oxidised chalcocite after sulphidisation at 0.10 V vs. standard hydrogen electrode was attributed to partial sulphidisation, 36.2%, of the Cu(II) oxidation species to form the desired Cu(I)-S product, while 62.8% of the species remained unsulphidised. It was revealed that all the Cu(II) oxidation species on chalcocite were sulphidised to the desired Cu(I)-S product at the lower potential of -0.20 V. Intriguingly, the flotation recovery was even lower than that obtained at 0.10 V. The limited improvement in flotation even though the surface was fully sulphidised was attributed to the high electrochem. activity and re-oxidation of the Cu(I)-S product formed. 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 applications of Copper-based nanoparticles have received great attention due to the earth-abundant, low toxicity and inexpensive. Copper of different valence states can be used to catalyze the coupling reaction, especially the Ullmann coupling reaction. Recommanded Product: Cuprichydroxide

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

3D Printed Parahydrophobic Surfaces as Multireaction Platforms was written by Gaxiola-Lopez, Julio C.;Lara-Ceniceros, Tania E.;Silva-Vidaurri, Luis Gerardo;Advincula, Rigoberto C.;Bonilla-Cruz, Jose. And the article was included in Langmuir in 2022.COA of Formula: CuH2O2 This article mentions the following:

Parahydrophobic surfaces (PHSs) composed of arrays of cubic μ-pillars with a double scale of roughness and variable wettability were systematically obtained in one step and a widely accessible stereolithog. Formlabs 3D printer. The wettability control was achieved by combining the geometrical parameters (H = height and P = pitch) and the surface modification with fluoroalkyl silane compounds Homogeneous distribution of F and Si atoms onto the pillars was observed by XPS and SEM-EDAX. A nano-roughness on the heads of the pillars was achieved without any post-treatment. The smallest P values lead to surfaces with static contact angles (CAs) >150° regardless of the H utilized. Interestingly, the relationship 0.6 ≤ H/P ≤ 2.6 obtained here was in good agreement with the H/P values reported for nano- and submicron pillars. Furthermore, exptl. CAs, advancing and receding CAs, were consistent with the theor. prediction from the Cassie-Baxter model. Structures covered with perfluorodecyltriethoxysilane with high H and short P lead to PHSs. Conversely, structures covered with perfluorodecyltrimethoxysilane exhibited a superhydrophobic behavior. Finally, several aqueous reactions, such as precipitation, coordination complex, and nanoparticle synthesis, were carried out by placing the reactive agents as microdroplets on the parahydrophobic pillars, demonstrating the potential application as chem. multi-reaction array platforms for a large variety of relevant fields in microdroplet manipulation, microfluidics systems, and health monitoring, among others. In the experiment, the researchers used many compounds, for example, Cuprichydroxide (cas: 20427-59-2COA of Formula: 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. Due to these characteristics, copper nanoparticles have generated a great deal of interest especially in the field of catalysis. COA of Formula: CuH2O2

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

Fabrication of breathable Janus membranes with gradient unidirectional permeability by micro-imprinting was written by Wang, Lixia;Zhou, Baokai;Bi, Zhaojie;Wang, Chen;Zheng, Lun;Niu, Hongbin;Cui, Pengyuan;Wang, Dongfang;Li, Qian. And the article was included in Separation and Purification Technology in 2022.Recommanded Product: 20427-59-2 This article mentions the following:

The realization of the directional water transport function of Janus membrane is based on the formation of its asym. structure. Nevertheless, the persistent problems of unstable directional water transport and poor adhesion between membranes limit their application. In this paper, based on electrospinning, the copper mesh with an in-situ growth conical nanoneedle structure was innovatively selected as an imprint template, and the conical structure was imprinted between the blended TPU/PAN membrane and the PAN membrane to form a three-layer laminated composite membrane. The gradient unidirectional permeability Janus membrane was developed, which not only constructed an asym. hierarchical structure but also realized the progressive wetting function inside. The water absorption tests showed that the water storage capacity was as high as 2047.37% of its weight Moreover, stable gas permeability could be achieved under 20 cm water column pressure when the gas flow rate was 0.05 kg/cm³. Importantly, the membrane exhibited ultra-stable unidirectional water transport under strong mech. stimulation and prolonged gravity, which provided possibility for preparation of Janus membranes with high durability, strong mech. damage resistance and good air permeability. 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. Copper has continued to be one of the most utilized and important transition metal catalysts in synthetic organic chemistry. Copper of different valence states can be used to catalyze the coupling reaction, especially the Ullmann coupling reaction. Recommanded Product: 20427-59-2

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

Sulfurization-derived Cu⁰-Cu⁺ sites for electrochemical CO₂ reduction to ethanol was written by Dou, Tong;Du, Jiawei;He, Jinqing;Wang, Yiping;Zhao, Xuhui;Zhang, Fazhi;Lei, Xiaodong. And the article was included in Journal of Power Sources in 2022.Quality Control of Cuprichydroxide This article mentions the following:

The transformation of CO₂ into value-added products is a hot research topic. Metal copper as an electrochem. catalyst shows activity for generating multi-carbon products in CO₂ electroreduction Herein, Cu₂S nanorods/copper mesh (Cu₂S/CM) is successfully fabricated, and exhibits high performance of CO₂ electroreduction to ethanol. At -0.8 V vs RHE, it achieved the Faraday efficiency (FE) of 13.5%, the partial c.d. of 13.3 mA cm^-2 and the yield of 986.4μmol L^-1 h^-1 for ethanol. Experiments and theor. calculations indicated that the high performance is benefits from the high d. of Cu0 and Cu + pairs derived from Cu₂S/CM during CO₂ electroreduction and an appropriate surface Cu0/Cu + ratio of 0.17. The Cu0-Cu+ sites facilitate the adsorption of key intermediate *CH₂CHO and decrease the energy barrier of the ethanol pathway. This work provides not only a new comprehension of CO₂ electroreduction with Cu2S catalyst but also a design idea based on Cu0-Cu+ sites in Cu/Cu₂S catalyst. In the experiment, the researchers used many compounds, for example, Cuprichydroxide (cas: 20427-59-2Quality Control 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.Quality Control of Cuprichydroxide

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

Molecular and nanostructure designed superhydrophilic material with unprecedented antioil-fouling property for diverse oil/water separation was written by Wang, ZheCun;Guan, Min;Yang, Xin;Li, HanZhen;Wang, LaiGui. And the article was included in Science China: Technological Sciences in 2022.Name: Cuprichydroxide This article mentions the following:

The design and development of new advanced superwetting porous membranes with antioil-fouling performance are still rare and highly desirable because of their potential widespread applications. A metallic phosphate nanoflower-covered mesh membrane with superhydrophilic and unprecedented antioil-fouling properties is prepared by an exceptionally simple and effective in-situ solution corrosion method. As demonstrated, the outstanding antioil-fouling property of the resulting mesh membrane is connected with the special phosphate group and the three-dimensional (3D) nanoflower structure. Owing to the antioil-fouling property, upon to water, the oil-fouled mesh membrane can keep the surface free of various kinds of oils, including viscous crude oil to light n-hexane. Thanks to its unprecedented self-cleaning property, the superhydrophilic mesh membrane can effectively sep. different oil/water mixtures without prior wetted by water, exhibiting great potential for practical spilled oil remediation. 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. 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.Name: Cuprichydroxide

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

Stable Li/Cu₂O composite anodes enabled by a 3D conductive skeleton with lithiophilic nanowire arrays was written by Zhang, Nanxiang;Zhao, Teng;Wei, Lei;Feng, Tao;Wu, Feng;Chen, Renjie. And the article was included in Journal of Power Sources in 2022.HPLC of Formula: 20427-59-2 This article mentions the following:

Lithium (Li) metal is an attractive anode for next-generation high-energy-d. rechargeable batteries due to its high theor. capacity and low redox potential. However, the uncontrolled growth of Li dendrites and infinite volume change during Li stripping/plating process lead to low coulombic efficiency and safety concern. To solve these critical issues, copper foam with Cu₂O nanowire arrays (COCF) is rationally designed and used as three-dimensional (3D) conductive skeleton for compositing Li. Cu₂O nanowire arrays structure with strong capillary forces and lithiophilicity is beneficial for the wetting of molten Li on surface and Li ⁺ nucleation. In addition, the 3D robust Cu skeleton with porous structure can reduce the local c.d. and regulate the distribution of Li⁺ flux on the electrode surface, leading to homogeneous nucleation and deposition of lithium, as well as mitigating the volume expansion. As a result, the COCF-Li composite lithium anode exhibits a prolonged cycling stability over 1000 h with a low over-potential of ∼50 mV at a c.d. of 1 mA•cm^-2 in a sym. cell. Even at a c.d. of 4 mA•cm^-2 and deposition capacity of 4 mAh•cm^-2, it still delivers a stable cycling performance for 600 h. 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”

Enhancement of solar thermal storage properties of phase change composites supported by modified copper foam was written by Guo, Pan;Zhao, Chengzhi;Sheng, Nan;Zhu, Chunyu;Rao, Zhonghao. And the article was included in Solar Energy Materials & Solar Cells in 2022.HPLC of Formula: 20427-59-2 This article mentions the following:

Metallic foams, especially copper foams (CF), have been investigated to solve the problems of leaking and low thermal conductivity of phase change materials (PCMs), which helps to promote the application in solar thermal energy storage and thermal management. In this paper, the surface and pore structure of com. CF was modified by in-situ formed copper nanowires and the introduction of flake graphite (FG). The copper nanowires and embedded FG not only provide greater capillary absorption force to prevent the leakage of liquid paraffin but also enhance the thermally conductive and photothermal conversion efficiency of the phase change composites. The thermal conductivity of the modified CF supported composite PCM reaches 4.1 W m^-1 k^-1, which is 1.6 times of the un-modified CF supported composite PCM and 20.5 times of paraffin. These results indicate the great application prospects in the fields of solar thermal energy storage and thermal management. 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, low toxicity and inexpensive. 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”

Activating copper oxide for stable electrocatalytic ammonia oxidation reaction via in-situ introducing oxygen vacancies was written by Huang, Jingjing;Chen, Zhe;Cai, Jinmeng;Jin, Yongzhen;Wang, Tao;Wang, Jianhui. And the article was included in Nano Research in 2022.Application In Synthesis of Cuprichydroxide This article mentions the following:

Electrocatalytic ammonia oxidation reaction (EAOR) provides an ideal solution for on-board hydrogen supply for fuel cells, while the lack of efficient and durable EAOR catalysts has been a long-standing obstacle for its practical application. Herein, we reported that the defect engineering via in-situ electrochem. introducing oxygen vacancies (Vo) not only turns the inactive CuO into efficient EAOR catalyst but also achieves a high stability of over 400 h at a high c.d. of ∼ 200 mA·cm^-2. Theor. simulation reveals that the presence of Vo on the CuO surface induces a remarkable upshift of the d-band center of active Cu site closer to the Fermi level, which significantly stabilizes the reaction intermediates (NHx) and efficiently oxidizes NH₃ into N₂. This Vo-modulated CuO shows a different catalytic mechanism from that on the conventional Pt-based catalysts, paving a new avenue to develop inexpensive, efficient, and robust catalysts, not limited to EAOR. 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. 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 nitrogen-containing nucleophiles, phenols, thiols, xanthogenates, selenium ruthenium nucleophiles and the like.Application In Synthesis of Cuprichydroxide

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

Polyester fabrics coated with cupric hydroxide and cellulose for the treatment of kitchen oily wastewater was written by Zhang, Zhaoyang;Wei, Jieyu;Zhang, Xiaolei;Xiao, Hang;Liu, Yiping;Lu, Ming. And the article was included in Chemosphere in 2022.Computed Properties of CuH2O2 This article mentions the following:

In recent years, kitchen oily wastewater has received much attention because of its harmful effects on the ecol. environment. Therefore, separation of oil from kitchen oily wastewater has become an urgent issue. In this study, this problem could be solved using polyester fabrics covered with cupric hydroxide and cellulose. The functional fabric was obtained by the dipping-rolling-drying process which is an easy and practical way to prepare the fabric and could improve the hydrophilicity of polyester. The functional polyester fabric could sep. oil/water mixtures completely under the force of gravity with a high water flux of 2079 L m-2 h-1-3620 L m-2 h-1 and high separation efficiency of 99.6%. Because kitchen oily wastewater contains floating oil and emulsified oil, we also tested the separation of oil-in-water emulsions. The functional polyester fabric could successfully sep. the emulsions with the water flux of 1210 L m-2 h-1-2018 L m-2 h-1 and a separation efficiency of 99.0%. Moreover, the water flux and separation efficiency of functional polyester fabric remained unchanged after the immersion in salt, alkali, and acid solutions, indicating that the functional polyester fabric exhibited commendable environmental stability. The oil in Chongqing Street Noodles soup with a high oil content was separated to simulate real-life oil/water separation, confirming that the functional polyester fabric could be applied to the treatment of kitchen oily wastewater. In the experiment, the researchers used many compounds, for example, Cuprichydroxide (cas: 20427-59-2Computed Properties of CuH2O2).

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. Copper nanoparticles can also catalyze the coupling reaction of nitrogen-containing nucleophiles, phenols, thiols, xanthogenates, selenium ruthenium nucleophiles and the like.Computed Properties of CuH2O2

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