October 20, 2022 | Page 3 of 3 | copper related catalyst

Nag, Ashish’s team published research in Nanomaterials in 2021 | CAS: 13395-16-9

Bis(acetylacetone)copper(cas: 13395-16-9) catalyzes coupling and carbene transfer reactions. Metal acetylacetonates are used as catalysts for polymerization of olefins and transesterification. Reference of Bis(acetylacetone)copper

Nag, Ashish; Batista, Laysa Mariela Frias; Tibbetts, Katharine Moore published their research in Nanomaterials in 2021. The article was titled 《Synthesis of air-stable Cu nanoparticles using laser reduction in liquid》.Reference of Bis(acetylacetone)copper The article contains the following contents:

We report the synthesis of air-stable Cu nanoparticles (NPs) using the bottom-up laser reduction in liquid method. Precursor solutions of copper acetlyacetonate in a mixture of methanol and iso-Pr alc. were irradiated with femtosecond laser pulses to produce Cu NPs. The Cu NPs were left at ambient conditions and analyzed at different ages up to seven days. TEM anal. indicates a broad size distribution of spherical NPs surrounded by a carbon matrix, with the majority of the NPs less than 10 nm and small numbers of large particles up to ~100 nm in diameter XRD collected over seven days confirmed the presence of fcc-Cu NPs, with some amorphous Cu2O, indicating the stability of the zero-valent Cu phase. Raman, FTIR, and XPS data for oxygen and carbon regions put together indicated the presence of a graphite oxide-like carbon matrix with oxygen functional groups that developed within the first 24 h after synthesis. The Cu NPs were highly active towards the model catalytic reaction of para-nitrophenol reduction in the presence of NaBH4. After reading the article, we found that the author used Bis(acetylacetone)copper(cas: 13395-16-9Reference of Bis(acetylacetone)copper)

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

Humphreys, Ben A.’s team published research in Langmuir in 2019 | CAS: 7789-45-9

Cupric bromide(cas: 7789-45-9) can be used as reducing agent, when complexed by three molecules of pyridine initiators for the controlled polymerization of styrene, methyl acrylate and methyl methacrylate.Recommanded Product: Cupric bromide

Recommanded Product: Cupric bromideIn 2019 ,《Poly(N-isopropylacrylamide) Response to Salt Concentration and Anion Identity: A Brush-on-Brush Study》 appeared in Langmuir. The author of the article were Humphreys, Ben A.; Johnson, Edwin C.; Wanless, Erica J.; Webber, Grant B.. The article conveys some information:

The stability of poly(N-isopropylacrylamide) (PNIPAM) brush-modified colloidal silica particles was compared to asym. and sym. PNIPAM brush direct force measurements in the presence of 1, 10, and 500 mM aqueous salt solution of KCl, KNO3, and KSCN between 10 and 45 °C. Dynamic light scattering measurements highlighted subtle variations in the salt-mediated thermoresponse, while at. force microscopy (AFM) force curves between a bare silica or PNIPAM brush-modified colloid probe and a planar PNIPAM brush elucidated differences in brush interactions. The AFM force curves in the presence of KCl primarily revealed steric interactions between the surfaces, while KNO3 and KSCN solutions exhibited electrosteric interactions on approach as a function of the chaotropic nature of the ion and the solution concentration The sym. PNIPAM brush interaction highlighted significant variations between KCl and KSCN at 1 and 500 mM concentrations, while the approach and retraction force curves were relatively similar at 10 mM concentration The combination of these techniques enabled the stability of PNIPAM brush-modified colloidal dispersions in the presence of electrolyte to be better understood with specific ion binding and the solution Debye length playing a significant role. In the experiment, the researchers used Cupric bromide(cas: 7789-45-9Recommanded Product: Cupric bromide)

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

Liu, Xiaokang’s team published research in Nano Letters in 2020 | CAS: 13395-16-9

Bis(acetylacetone)copper(cas: 13395-16-9) is used as PVC stabilizer, and curing agents for epoxy resins, acrylic adhesives and silicone rubbers. It is also used as solvents, lubricant additives, paint drier, and pesticides.Synthetic Route of C10H16CuO4

《Dynamic Surface Reconstruction of Single-Atom Bimetallic Alloy under Operando Electrochemical Conditions》 was published in Nano Letters in 2020. These research results belong to Liu, Xiaokang; Ao, Chengcheng; Shen, Xinyi; Wang, Lan; Wang, Sicong; Cao, Linlin; Zhang, Wei; Dong, Jingjing; Bao, Jun; Ding, Tao; Zhang, Lidong; Yao, Tao. Synthetic Route of C10H16CuO4 The article mentions the following:

The at.-level understanding of the dynamic evolution of the surface structure of bimetallic nanoparticles under industrially relevant operando conditions provides a key guide for improving their catalytic performance. Here, the authors exploit operando x-ray absorption fine structure spectroscopy to determine the dynamic surface reconstruction of Cu/Au bimetallic alloy where single-atom Cu was embedded on the Au nanoparticle, under electrocatalytic conditions. The authors identify the migration of isolated Cu atoms from the vertex position of the Au nanoparticle to the stable (100) plane of the Au 1st atom layer, when the reduction potential is applied. D. functional theory calculations reveal that the surface atom migration would significantly modulate the Au electronic structure, thus serving as the real active site for the catalytic performance. These findings demonstrate the real structural change under electrochem. conditions and provide guidance for the rational design of high-activity bimetallic nanocatalysts. In the part of experimental materials, we found many familiar compounds, such as Bis(acetylacetone)copper(cas: 13395-16-9Synthetic Route of C10H16CuO4)

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

Luo, Liuxuan’s team published research in ACS Catalysis in 2020 | CAS: 13395-16-9

《Composition-Graded Cu-Pd Nanospheres with Ir-Doped Surfaces on N-Doped Porous Graphene for Highly Efficient Ethanol Electro-Oxidation in Alkaline Media》 was written by Luo, Liuxuan; Fu, Cehuang; Yang, Fan; Li, Xiaolin; Jiang, Fangling; Guo, Yangge; Zhu, Fengjuan; Yang, Lijun; Shen, Shuiyun; Zhang, Junliang. Synthetic Route of C10H16CuO4 And the article was included in ACS Catalysis in 2020. The article conveys some information:

Tuning the compositions and structures of Pd-based nanomaterials and their supports has shown great potentials in facilitating the sluggish ethanol oxidation reaction (EOR) in alk. direct ethanol fuel cells. Accordingly, a facile solvothermal method involving Cu and Pd composition migrations is developed in this study, to synthesize highly uniform and small-sized nanospheres (NSs) possessing the special structures of composition-graded (CG) Cu1Pd1 and surface-doped (SD) Ir0.03, which are evenly anchored onto N-doped porous graphene (NPG) as a high-performance EOR electrocatalyst (CGCu1Pd1/SDIr0.03 NSs/NPG). Comprehensive physicochem. characterizations, electrochem. analyses, and first-principles calculations reveal that, benefiting from the NPG-imparted mass-transfer and oxygen-reduction effects, the CG-SD structural and size-morphol. effects of the NS, as well as the Cu- and Ir-induced bifunctional, geometric, and ligand effects, CGCu1Pd1/SDIr0.03 NSs/NPG exhibits not only ultrahigh electrocatalytic activity and highly efficient noble-metal (NM) utilization, showing 7105 and 6685 mA mg-1 in Pd- and NM-mass-specific activity (MSA), resp., which are 15.8 and 14.9 times those of com. Pd/C, but also satisfactory electrocatalytic durability, retaining resp. 28.1- and 19.2-fold enhancements in Pd-MSA compared to the com. Pd/C, after 1 h chronoamperometric and 500-cycle potential cycling degradation tests. This study not only provides an effective and versatile synthetic strategy to prepare the NM-efficient metal-based nanomaterials with the special CG and SD structures for various electrocatalytic and energy-conversion applications, but also proposes some insights into the composition- and structure-function relations in EOR electrocatalytic mechanism for rationally designing highly active and durable EOR electrocatalysts. In the experimental materials used by the author, we found Bis(acetylacetone)copper(cas: 13395-16-9Synthetic Route of C10H16CuO4)

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

Li, Menggang’s team published research in Small Methods in 2021 | CAS: 13395-16-9

Li, Menggang; Tian, Fenyang; Lin, Tianshu; Tao, Lu; Guo, Xin; Chao, Yuguang; Guo, Ziqi; Zhang, Qinghua; Gu, Lin; Yang, Weiwei; Yu, Yongsheng; Guo, Shaojun published an article in 2021. The article was titled 《High-Index Faceted PdPtCu Ultrathin Nanorings Enable Highly Active and Stable Oxygen Reduction Electrocatalysis》, and you may find the article in Small Methods.Quality Control of Bis(acetylacetone)copper The information in the text is summarized as follows:

Ultrathin nanosheet catalysts deliver great potential in catalyzing the oxygen reduction reaction (ORR), but encounter the ceiling of the surface at. utilizations, thus presenting a challenge associated with further boosting catalytic activity. Herein, a kind of PdPtCu ultrathin nanorings with increased numbers of electrocatalytically active sites is reported, with the purpose of breaking the activity ceiling of conventional catalysts. The as-made PdPtCu nanorings possess abundant high-index facets at the edge of both the exterior and interior surfaces. An ultrahigh electrochem. active surface area of 92.2 m2 g-1PGM is achieved on this novel catalyst, much higher than that of the com. Pt/C catalyst. The optimized Pd39Pt33Cu28/C shows a great enhanced ORR activity with a specific activity of 2.39 mA cm-2 and a mass activity of 1.97 A mg-1PGM at 0.9 V (vs. RHE), as well as superior durability within 30 000 cycles. D. function theory calculations reveal that the high-index facets and alloying Cu atoms can optimize the oxygen adsorption energy, explaining the enhanced ORR activity. Overcoming a key tech. barrier in sub-nanometer electrocatalysts, this work successfully introduces the hollow structures into the ultrathin nanosheets, heralding the exciting prospects of high-performance ORR catalysts in fuel cells. In the experiment, the researchers used many compounds, for example, Bis(acetylacetone)copper(cas: 13395-16-9Quality Control of Bis(acetylacetone)copper)

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

Ryu, Jin Su’s team published research in Thin Solid Films in 2019 | CAS: 7789-45-9

Some reported applications of Cupric bromide(cas: 7789-45-9) are: catalyst in cross coupling reactions; co-catalyst in Sonogashira coupling; lewis acid in enantioselective addition of alkynes.Application of 7789-45-9

In 2019,Thin Solid Films included an article by Ryu, Jin Su; Lim, Eun Taek; Choi, Jae Sang; Chung, Chee Won. Application of 7789-45-9. The article was titled 《Dry etching of copper thin films in high density plasma of CH3COOH/Ar》. The information in the text is summarized as follows:

Inductively coupled plasma reactive ion etching of copper thin films patterned with SiO2 masks was carried out using CH3COOH/Ar gas. The etch rate, etch selectivity to SiO2 mask, and the etch profiles of copper films were examined The evolution study of the etch profile as a function of gas concentration and etch depth revealed the etch sequence and etch mechanism. In the optimized CH3COOH/Ar gas, the systematic approach on the etch characteristics of copper films was performed by changing the etch parameters including inductively coupled plasma (ICP) rf power, dc-bias voltage to substrate, and process pressure. As the ICP rf power and dc-bias voltage increased and the process pressure decreased, the etch rate increased and the etch profile improved. XPS was used to determine the etch mechanism in CH3COOH/Ar gas. Finally, the etching of copper films in the CH3COOH/Ar was achieved with good etch profile with a high degree of anisotropy. In the experiment, the researchers used many compounds, for example, Cupric bromide(cas: 7789-45-9Application of 7789-45-9)

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

Li, Tzu-Han’s team published research in ACS Macro Letters in 2021 | CAS: 7789-45-9

Li, Tzu-Han; Yadav, Vivek; Conrad, Jacinta C.; Robertson, Megan L. published their research in ACS Macro Letters in 2021. The article was titled 《Effect of Dispersity on the Conformation of Spherical Polymer Brushes》.Quality Control of Cupric bromide The article contains the following contents:

We show that dispersity (D) markedly alters the conformation of spherical polymer brushes. The average lengths (lb) of poly(tert-Bu acrylate) (PtBA) brushes of varying D grafted to nanoparticles were measured using dynamic light scattering. In the semidilute polymer brush (SDPB) regime, the lb of PtBA and polymers from earlier studies of various D could be cleanly collapsed onto a master curve as a function of the scaling variable Nwσ1/3, where Nw is the weight-average d.p. and σ is the grafting d. In the concentrated polymer brush (CPB) regime, however, lb collapsed onto a bifurcated curve as a function of the scaling variable Nwσ1/2, indicating D more strongly affects the average length of brushes with low Nwσ1/2. We propose that the stretching of the stem near the particle surface due to interchain interactions in the CPB regime leads to greater lb in broad dispersity brushes of low but not high Nwσ1/2. In the experimental materials used by the author, we found Cupric bromide(cas: 7789-45-9Quality Control of Cupric bromide)

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

Chen, Alexander N.’s team published research in Nanoscale in 2021 | CAS: 13395-16-9

Chen, Alexander N.; Endres, Emma J.; Ashberry, Hannah M.; Bueno, Sandra L. A.; Chen, Yifan; Skrabalak, Sara E. published an article in 2021. The article was titled 《Galvanic replacement of intermetallic nanocrystals as a route toward complex heterostructures》, and you may find the article in Nanoscale.Synthetic Route of C10H16CuO4 The information in the text is summarized as follows:

Galvanic replacement reactions are a reliable method for transforming monometallic nanotemplates into bimetallic products with complex nanoscale architectures. When replacing bimetallic nanotemplates, even more complex multimetallic products can be made, with final nanocrystal shapes and architectures depending on multiple processes, including Ostwald ripening and the Kirkendall effect. Galvanic replacement, therefore, is a promising tool in increasing the architectural complexity of multimetallic templates, especially if we can identify and control the relevant processes in a given system and apply them more broadly. Here, we study the transformation of intermetallic PdCu nanoparticles in the presence of HAuCl4 and H2PtCl6, both of which are capable of oxidizing both Pd and Cu. Replacement products consistently lost Cu more quickly than Pd, preserved the crystal structure of the original intermetallic template, and grew a new phase on the sacrificial template. In this way, at. and nanometer-scale architectures are integrated within individual nanocrystals. Product morphologies included faceting of the original spherical particles as well as formation of core@shell and Janus-style particles. These variations are rationalized in terms of differing diffusion behaviors. Overall, galvanic replacement of multimetallic templates is shown to be a route toward increasingly exotic particle architectures with control exerted on both Angstrom and nanometer-scale features, while inviting further consideration of template and oxidant choices.Bis(acetylacetone)copper(cas: 13395-16-9Synthetic Route of C10H16CuO4) was used in this study.

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

Wang, Jingwei’s team published research in Energy & Fuels in 2022 | CAS: 13395-16-9

In 2022,Wang, Jingwei; Yan, Hongliang; Li, Xinxue published an article in Energy & Fuels. The title of the article was 《Synthesis of PtCu Rhombic Dodecahedral Nanoframes Decorated with Six Nanobranches for Efficient Methanol Electrooxidation》.Category: copper-catalyst The author mentioned the following in the article:

Engineering the structure of metal nanocrystals is critical to optimize their catalytic performance. In recent years, nanoframes have emerged as potential catalysts owing to their high at. utilization, abundant catalytically active sites, and three-dimensional accessible surfaces. Herein, PtCu rhombic dodecahedral nanoframes (RDFs) were synthesized via a facile one-pot solvothermal method by using hexadecyltrimethylammonium bromide as the structure-directing and stabilizing agent. Notably, the prepared PtCu RDFs each contain six nanobranches selectively protruding from their six 〈100〉 vertices. The nanobranches possess various high-index facets, which may act as highly active sites for electrochem. catalysis. Electrocatalytic measurements demonstrate that the prepared PtCu RDFs have superior catalytic activity and stability relative to the Pt/C catalyst for the methanol oxidation reaction (MOR). We hope that this synthetic approach will introduce new insights into the construction of Pt-based nanostructures for the MOR or other catalytic applications. The experimental part of the paper was very detailed, including the reaction process of Bis(acetylacetone)copper(cas: 13395-16-9Category: copper-catalyst)

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