Tag: 0-100

One-pot synthesis of iron oxides decorated bamboo hydrochar for lead and copper flash removal was written by Hu, Xiaohong;Dai, Linxin;Ma, Qianli;Xu, Jianying;Ma, Jianfeng;Liu, Xing’e. And the article was included in Industrial Crops and Products in 2022.Application of 20427-59-2 This article mentions the following:

A novel one-pot codeposition strategy was developed by employing bamboo hydrochar as precursors to fabricate magnetic porous char (MPC) with Fe3O4 or α-Fe loading. The synthesized MPC with well dispersed magnetic phase and high thermal stability displayed excellent adsorption capacities and flash adsorption rate for Cu(II) and Pb(II). The batch sorption experiments showed that MPC had the best performance with Langmuir adsorption capacities as high as 125.06 mg/g for Cu(II) and 153.85 mg/g for Pb(II), resp. More importantly, the short time of adsorption reaching 90% equilibrium within 10 min was considerably beyond previous study. Also, a synergistic mechanism of the chem. complexation and phys. adsorption for the higher adsorption capabilities and flash removal rate of the synthesized MPC was proposed. The regeneration investigation revealed that the sorption efficiencies remained at high level with above 92.4% for Cu(II) and 94.1% for Pb(II) after five cycles. Thus, the MPC were expected to be a promising candidate for high-efficient and rapid removal of heavy metal contaminants from wastewater in future practical utilization. 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. Copper nanoparticles can also catalyze the coupling reaction of nitrogen-containing nucleophiles, phenols, thiols, xanthogenates, selenium ruthenium nucleophiles and the like.Application of 20427-59-2

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

Construction of Core-Shell Heterostructured Nanoarrays of Cu(OH)₂@NiFe-Layered Double Hydroxide through Facile Potentiostatic Electrodeposition for Highly Efficient Supercapacitors was written by Wang, Zihao;Liu, Zhiqiang;Wang, Lei;Zhao, Kai;Sun, Xiaolin;Jia, Dedong;Liu, Jingquan. And the article was included in ChemElectroChem in 2022.Computed Properties of CuH2O2 This article mentions the following:

In this work, the densely distributed and core-shell structured Cu(OH)₂@NiFe-LDH nanoarrays on copper foam (COH@NF-LDH/CF) are constructed by a facile and feasible in situ oxidation method combined with potentiostatic electrodeposition. This distinct core-shell structure as well as the synergetic effect between Cu(OH)₂ and NiFe-LDH provides a tremendous advantage, such as sufficient chem. active spots, the pathway for electron and ion transfer, to enhance the electrochem. performance of COH@NF-LDH/CF. In particular, the area capacitance of synthesized COH@NF-LDH/CF can reach 4.139 F cm^-2 at 5 mA cm^-2, which remarkably precede the single bare Cu(OH)₂ (198 mF cm^-2) or NiFe-LDH/CF (71 mF cm^-2) electrode materials at the same c.d. Furthermore, the sample COH@NF-LDH/CF is investigated and found to have excellent cycle stability (maintained 86.47% after 5000 cycles). More importantly, the COH@NF-LDH/CF electrode also can be utilized directly as the pos. electrode and activated carbon (AC) as the neg. electrode to assemble a facile asym. supercapacitor, which achieves a voltage window of up to 1.5 V and demonstrate up 65.56 Wh kg-1 brilliant energy d. under 750 W kg^-1. Therefore, their results indicate that COH@NF-LDH/CF core-shell structure nanocomposites may have a great prospect of application in energy storage. 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. 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 of different valence states can be used to catalyze the coupling reaction, especially the Ullmann coupling reaction. Computed Properties of CuH2O2

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

Photocorrosion behavior of Cu₂O nanowires during photoelectrochemical CO₂ reduction was written by Wang, Qingmei;Zhang, Yanfang;Liu, Yang;Wang, Keke;Qiu, Weixin;Chen, Long;Li, Wenzhang;Li, Jie. And the article was included in Journal of Electroanalytical Chemistry in 2022.Related Products of 20427-59-2 This article mentions the following:

Cuprous oxide (Cu₂O) is a promising photocathode candidate for photoelectrochem. (PEC) CO₂ reduction reaction (CO₂RR) due to its narrow band gap and suitable band alignment. However, it suffers from severe photocorrosion, and the real reason is confused. In this work, Cu₂O nanowires film was used as a model photocathode to explore the corrosion behavior during PEC CO₂RR. The evolution of Cu₂O photoelectrodes was monitored by microscopy techniques (scanning electron microscope, transmission electron microscope) and compositional analyses (X-ray diffraction,XPS), more content of Cu was detected after testing under illumination than that in the dark. Polarization curves also show a much higher corrosion current of Cu₂O under illumination. Assisted with the measurement in the existence of electron and hole scavengers, the self-reduction of Cu₂O by the accumulation of photoelectrons is considered as the primary corrosion pathway for Cu₂O photocathode in aqueous solution In the experiment, the researchers used many compounds, for example, Cuprichydroxide (cas: 20427-59-2Related Products 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.Related Products of 20427-59-2

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

Guest Alignment and Defect Formation during Pore Filling in Metal-Organic Framework Films was written by Baumgartner, Bettina;Mashita, Risa;Fukatsu, Arisa;Okada, Kenji;Takahashi, Masahide. And the article was included in Angewandte Chemie, International Edition in 2022.Quality Control of Cuprichydroxide This article mentions the following:

The degree of pore filling is an important parameter for defining guest@MOF properties in applications including electronics, optics, and gas separation However, the interplay of key aspects of host-guest interactions, such as a quant. description of the guest alignment or the structural integrity of the host as function of pore filling are yet to be determined Polarisation-dependent IR spectroscopy in attenuated total reflection configuration combined with gas sorption allowed to simultaneously study the orientation of the guest mol. and structural changes of the MOF framework during the pore filling process. Thereby we found, that initially randomly oriented guest mols. align with increasing pore filling during adsorption from the gas phase. At the same time, the framework itself undergoes a reversible, guest mol.-dependent rotation of the aromatic linker and a linker detachment process, which induce defects. 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. The applications of Copper-based nanoparticles have received great attention due to the earth-abundant, inexpensive and low toxicity. Copper nanoparticles can catalyze the Ullmann coupling reaction in a wide range of applications.Quality Control of Cuprichydroxide

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

Effective separation and recovery of Zn, Cu, and Cr from electroplating sludge based on differential phase transformation induced by chlorinating roasting was written by Huang, Qiuyun;Wang, Qingwei;Liu, Xueming;Li, Xiaoqin;Zheng, Jiayi;Gao, Huiqin;Li, Li;Xu, Wenbin;Wang, Shi;Xie, Mengqin;Xiao, Yongli;Lin, Zhang. And the article was included in Science of the Total Environment in 2022.Recommanded Product: 20427-59-2 This article mentions the following:

Heavy metals in electroplating sludge (ES) are usually amorphous and easily released in the environment. Especially for the ES containing multiple heavy metals, owing to the complex composition and lack of effective disposal method, it has been storage for a long time. In order to avoid environmental pollution, effective treatment methods are very urgent and necessary. Here, chlorinating roasting method was developed to enlarge the phase difference of heavy metals to fulfill the utilization of ES containing multiple heavy metals (Zn, Cr, and Cu). When CaCl₂ was used as additive, Zn and Cu were volatilized to the gas phase, while Cr was oxidized to Cr(V)/(VI) and retained in the solid phase with readily leachable state. The recovery percentage of Zn, Cu, and Cr can reach 99%, 98%, and 96% resp. by chlorinating roasting for 4 h at 1000 °C with the CaCl₂ addition proportion of 100%. After further extraction and purification, the purity of Cr and Zn can reach 92% and 99% resp. Moreover, the mechanism of the differential phase transformation induced by chlorinating roasting was analyzed by the method of thermodn. and kinetics. The kinetic reaction equation of the ZnCl₂ and CuCl₂ volatilization process can be described by phase boundary reaction and the function is G(α) = 1-(1-α)^1/3. This work provides a simple and effective method for the treatment of ES containing multiple heavy metals. 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 low toxicity and inexpensive, earth-abundant. 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”

Simultaneous recovery of Cu₂O and FeOOH from wastewater contaminated with mixed metals using fluidized-bed crystallization was written by Mahasti, Nicolaus N. N.;Lin, Jui-Yen;Shih, Yu-Jen;Huang, Yao-Hui. And the article was included in Journal of Environmental Chemical Engineering in 2022.Formula: CuH2O2 This article mentions the following:

The fluidized-bed crystallization (FBC) removes heavy metals onto the fluidized pellets, which is an outstanding alternative to the precipitation method. This study simultaneously recovers iron and copper as binary metal-oxide pellets (Fe^III_0.66Cu^I_0.33 @SiO₂) in a synthetic wastewater using FBC and silica as a seed material. The operating parameters for FBC include the Fe/Cu ratio, pH, cross-sectional loading (L, kg/m².h) and bed height (H, cm) and these are optimized to maximize the crystallization efficiency of iron and copper. At pH = 8, an input Fe/Cu ratio = 2 at a total metal concentration of 3 mM, the crystallization ratio (CR) and the total resp. metal removal (TR) for Fe and Cu is 90% and 99%. Precipitation rates of 0.88 and 0.38 mg-metal/ gr-seed•h were obtained at resp. cross-sectional loadings of 0.25 kg m^-2•h and 0.15 kg m^-2•h for Fe and Cu. The crystal phases of FBC product are resp. characterized as FeOOH and Cu₂O by XRD anal. The high crystallization ratio and the recovery of crystal pellet product indicated that the quantity of the sludge has been reduced significantly in comparison to the traditional chem. precipitation 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 applications of Copper-based nanoparticles have received great attention due to the earth-abundant, inexpensive and low toxicity. 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”

Improving the cycling stability of lithium metal anodes using Cu₃N-modified Cu foil as a current collector was written by Tang, Danlei;Yuan, Lixia;Liao, Yaqi;Jin, Wenxuan;Chen, Jie;Cheng, Zexiao;Li, Xiang;He, Bin;Li, Zhen;Huang, Yunhui. And the article was included in Science China Materials in 2022.COA of Formula: CuH2O2 This article mentions the following:

Lithium (Li) metal anodes have the potential to stimulate the development of secondary batteries due to their high theor. specific capacities and low redox potentials among all possible solid secondary anode compounds However, the growth of Li dendrites during repeated Li stripping/plating processes leads to low coulombic efficiencies (CEs) and safety hazards, which significantly hinders their practical application. In this work, com. Cu foil was modified in situ by Cu₃N nanowires (Cu₃N NWs/Cu) and used as the current collector for a Li anode. In addition to decreasing the true c.d. of the anode and alleviating the volume change during the cycles, Cu₃N reacted with Li during the initial cycle (3Li + Cu₃N → Li3N + 3Cu), which enabled the formation of a Li3N-rich solid electrolyte interphase (SEI). This Li3N-rich SEI with a high ionic conductivity not only boosted Li ion transport but also promoted the homogeneous deposition of Li via increased Li nucleation sites. The improvements in both mass transport and deposition dynamics restrained dendrite growth. As a result, the Cu₃N NWs/Cu anode had stable Li plating/stripping over 270 cycles with a high average CE of 98.6% at 1 mA cm^-2, with Li capacities of 1 mA h cm^-2. A long cycling lifespan of 430 cycles was achieved using a full cell with a high-load LiFePO₄ cathode (mass loading: 10 mg cm^-2) and a Cu3N NWs/Cu-Li anode (N/P = 2.35), demonstrating the effectiveness and practicality of the Cu₃N NWs/Cu current collector in stabilizing the Li anode. 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. 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. COA of Formula: CuH2O2

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

XAFS and HAXPES analyses of the oxidation state of a copper surface buried under a phenolic resin nanofilm was written by Izumi, Atsushi;Shudo, Yasuyuki;Kakara, Takeshi. And the article was included in Applied Surface Science in 2022.Safety of Cuprichydroxide This article mentions the following:

The oxidation state of a buried copper surface under a phenolic resin insulating layer was investigated by nondestructive anal. methods using conversion electron yield X-ray absorption fine structure (CEY-XAFS) and hard XPS (HAXPES). The formation of Cu₂O and CuO during heat treatment at 180°C in air and the formation of Cu(OH)₂ and CuCO₃ during long-term storage under atm. conditions at room temperature proceeded on the buried copper surface to a depth of tens of nanometers. The phenolic resin nanofilm suppressed the thermal oxidation of the underlying Cu to Cu₂O and CuO by 20% but did not suppress the formation of native oxides Cu(OH)₂ and CuCO₃ under atm. conditions because of the high water absorption and high permeability of the phenolic resin nanofilm. This study demonstrated that CEY-XAFS and HAXPES technique are the powerful tools for investigation of oxidation states of the copper surface buried under the phenolic resin insulating layer. 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 low toxicity and inexpensive, earth-abundant. 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”

Removal of Heavy Metals from Industrial Wastewater by Chemical Precipitation: Mechanisms and Sludge Characterization was written by Benalia, Mohamed Charif;Youcef, Leila;Bouaziz, Mohamed Ghrissi;Achour, Samia;Menasra, Hayet. And the article was included in Arabian Journal for Science and Engineering in 2022.Related Products of 20427-59-2 This article mentions the following:

Chem. precipitation using lime (Ca(OH)₂), caustic soda (NaOH) and soda ash (Na₂CO₃) for the removal of simultaneous heavy metals (Cu(II) and Zn(II)) from industrial wastewater of the cable industry was carried out in laboratory by jar tests. For each reagent used, an improvement in copper and zinc removal efficiency was obtained by increasing the precipitating reagent dose (10-400 mg/L). Efficiencies of over 90% can be achieved. Chem. precipitation efficiency is related to the pH of the treatment. At a high final pH level (8 < pH < 10), the removal efficiency of copper for each precipitating agent is slightly higher than that of zinc and the residual metal contents were in conformity with industrial discharge standards In sludge product, zinc and copper were precipitated as amorphous hydroxides including Zn(OH)₂ and Cu(OH)₂. Based on XRD anal., the presence of an amount of other addnl. phases was noticed for copper. SEM images show that sludges produced are not large in size and are compact in structure. Corresponding EDX (energy-dispersive X-ray spectroscopy) shows that the amount of copper is higher than the amount of zinc in all recovered sludge. Wastewater treatment with soda ash resulted in a lower volume and a large product size of sludge. As a result, drying steps can be less expensive. This is a significant advantage comparably with the other precipitating agents. Soda ash may be considered as cost-effective precipitating agent for Cu(II) and Zn(II) in the industrial wastewater of the cable industry. In the experiment, the researchers used many compounds, for example, Cuprichydroxide (cas: 20427-59-2Related Products 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, low toxicity and inexpensive. 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.Related Products of 20427-59-2

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

Copper mobilisation from Cu sulphide minerals by methanobactin: Effect of pH , oxygen and natural organic matter was written by Rushworth, Danielle D.;Christl, Iso;Kumar, Naresh;Hoffmann, Kevin;Kretzschmar, Ruben;Lehmann, Moritz F.;Schenkeveld, Walter D. C.;Kraemer, Stephan M.. And the article was included in Geobiology in 2022.Electric Literature of CuH2O2 This article mentions the following:

Aerobic methane oxidation (MOx) depends critically on the availability of copper (Cu) as a crucial component of the metal center of particulate methane monooxygenase, one of the main enzymes involved in MOx. Some methanotrophs have developed Cu acquisition strategies, in which they exude Cu-binding ligands termed chalkophores under conditions of low Cu availability. A well-characterised chalkophore is methanobactin (mb), exuded by the microaerophilic methanotroph Methylosinus trichosporium OB3b. Aerobic methanotrophs generally reside close to environmental oxic-anoxic interfaces, where the formation of Cu sulfide phases can aggravate the limitation of bioavailable Cu due to their low solubility The reactivity of chalkophores towards such Cu sulfide mineral phases has not yet been investigated. In this study, a combination of dissolution experiments and equilibrium modeling was used to examine the dissolution and solubility of bulk and nanoparticulate Cu sulfide minerals in the presence of mb as influenced by pH, oxygen and natural organic matter. In general, we show that mb is effective at increasing the dissolved Cu concentrations in the presence of a variety of Cu sulfide phases that may potentially limit Cu bioavailability. More Cu was mobilised per mol of mb from Cu sulfide nanoparticles compared with well-crystalline bulk covellite (CuS). In general, the efficacy of mb at mobilising Cu from Cu sulfides is pH-dependent. At lower pH, e.g. pH 5, mb was ineffective at solubilizing Cu. The presence of mb increased dissolved Cu concentrations between pH 7 and 8.5, where the solubility of all Cu sulfides is generally low, both in the presence and absence of oxygen. These results suggest that chalkophore-promoted Cu mobilisation from sulfide phases is an effective extracellular mechanism for increasing dissolved Cu concentrations at oxic-anoxic interfaces, particularly in the neutral to slightly alk. pH range. This suggests that aerobic methanotrophs may be able to fulfil their Cu requirements via the exudation of mb in natural environments where the bioavailability of Cu is constrained by very stable Cu sulfide phases. 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 transition metal-catalyzed chemical transformation of organic electrophiles and organometallic reagents has turned up as an exceedingly robust synthetic tool. 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.Electric Literature of CuH2O2

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