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copper oxide-modified highly reversible Zn powder anode for aqueous Zn metal batteries

Rare Metals 2024年第10期43卷 5005-5016页

作者： Guan-Qun Liu Biao Fu Zhe-Xuan Liu Lan-Yan Li Shu-Quan Liang Guo-Zhao Fang School of Materials Science and Engineering Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan ProvinceCentral South UniversityChangsha 410083China School of Science Hunan University of Technology and BusinessChangsha 410205China National Energy Metal Resources and New Materials Key Laboratory Central South UniversityChangsha 410083China

With the advantages of mature preparation technology,structural adjustability and suitability for large-scale application,Zn powder anode is considered to be an ideal electrode for realizing low-cost,high-energy-density aqueous Zn metal ***,the high specific surface of Zn powders leads to severe side reactions such as hydrogen evolution and corrosion,thus limiting their widespread use Here,this work develops a novel CuO@Zn powder anode with a synergy effect of surface wrapping and *** powders are uniformly wrapped by small CuO particles due to the strong adsorption between Zn and *** wrapped CuO particles build a good conductive framework to inhibit the structural collapse of the Zn powder caused by corrosion and non-uniform ***,CuO can also be used as a seed to guide the uniform deposition of Zn ions through its strong binding energy with *** a result,the Cu O@Zn anode can maintain a long cyclic life of 900 h at current density of 1 mA·cm^(-2)and capacity of 1 mAh·cm^(-2),as well as contribute to an excellent capacity retention of 92% after 800cycles for CuO@Zn||NH_(4)V_(4)O_(10)full *** at high current density of 5 A·g^(-1),the full cell exhibits a specific capacity of more than 200 mAh·g^(-1)after 800 cycles,with a good capacity retention of 89%.This work provides a new idea for developing high-performance Zn powder-based anodes.

关键词： Zn powder copper oxide Surface wrapping Zn anode Aqueous Zn metal batteries

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Cuprous oxide/copper oxide interpenetrated into ordered mesoporous cellulose-based carbon aerogels for efficient photocatalytic degradation of methylene blue

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Frontiers of Chemical Science and Engineering 2023年第7期17卷 918-929页

作者： Rui Cui Dongnv Jin Gaojie Jiao Zhendong Liu Jiliang Ma Runcang Sun Liaoning Key Lab of Lignocellulose Chemistry and Biomaterials Liaoning Collaborative Innovation Center for Lignocellulosic BiorefineryCollege of Light Industry and Chemical EngineeringDalian Polytechnic UniversityDalian 116034China

The casual discharge of dyes from industrial settings has seriously polluted global water *** to the abundance of biomass resources,preparing photocatalysts for photocatalytic degradation of dyes is significant;however,it still remains *** this work,a cuprous oxide/copper oxide composite was interpenetrated onto carbon nanosheets of cellulose-based flexible carbon aerogels(Cu_(2)O/CuO@CAx)via a simple freeze-drying-calcination *** introduction of the carbon aerogel effectively prevents the aggregation of the cuprous oxide/copper oxide *** addition,Cu_(2)O/CuO@CA0.2 has a larger specific surface area,stronger charge transfer capacity,and lower recombination rate of photogenerated carriers than copper ***,Cu_(2)O/CuO@CA0.2 exhibited high photocatalytic activity in decomposing methylene blue,with a degradation rate reaching up to 99.09% in 60 *** active oxidation species in the photocatalytic degradation process were systematically investigated by electron spin resonance characterization and poisoning experiments,among which singlet oxygen played a major *** conclusion,this work provides an effective method for preparing photocatalysts using biomass resources in combination with different metal *** also promotes the development of photocatalytic degradation of dyes.

关键词： carbon aerogel photocatalysis dye degradation biomass cuprous oxide copper oxide

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Microwave-assisted hydrothermal synthesis of copper oxide-based gas-sensitive nanostructures

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Rare Metals 2021年第6期40卷 1477-1493页

作者： Ying Li Yu-Ling Lu Kai-Di Wu Dong-Zhi Zhang Marc Debliquy Chao Zhang College of Mechanical Engineering Yangzhou UniversityYangzhou 225127China College of Control Science and Engineering China University of Petroleum(East China)Qingdao 266580China Service de Science des Materiaux Faculte PolytechniqueUniversite de MonsMons 7000Belgium

Hydrothermal methods are widely used in chemical synthesis of target products with specific morphology and *** methods are very efficient for the preparation of well-controlled structures but the reaction time is usually *** assistance of microwave makes the reaction system heat up faster,more uniformly and reactions are accelerated,it also can be utilized to change the morphology or structure of materials,which improves the physic-chemical properties of synthesized products and influences its gas-sensing *** oxide(CuO)is widely applied in semiconductor gas sensors because of its good reactivity and *** review article briefly introduces the principle,mechanism and recent development of CuO nanostructures obtained by microwave-as sis ted hydrothermal synthesis(MWHS)*** also discussed the relation between endopathic factors of material and its gas-sensitive *** technical challenges and prospective solutions for highperformance CuO-based gas-sensitive materials with unique nanostructure are *** is pointed out that the hierarchical CuO-based nanostructures and their composite materials prepared by MWHS process are efficacious methods to improve the gas-sensitive performance of the *** the basis of the morphology,the materials are divided into nanorods,nanoflowers,nanosheets,nanospheres and other *** influence of microwave parameters on the properties of synthetic products is *** influence followed by metal element loading on the structure and properties of CuO-based materials by MWHS process is further *** this review summarizes the research progress of graphene-CuO and metal oxide-CuO composites prepared by MWHS process in recent years.

关键词： Microwave-assisted Hydrothermal synthesis copper oxide Gas-sensitive material Nanostructure

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Comparison of desulfurization kinetics of copper oxide sorbent

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Journal of Central South University 2015年第8期22卷 2902-2908页

作者：郁青春邓勇王飞冯跃斌杨斌徐宝强刘大春 National Engineering Laboratory for Vacuum Metallurgy Key Laboratory of Vacuum Metallurgy for Non-ferrous Metal of Yunnan ProvinceState Key Laboratory of Complex Non-ferrous Metal Resources Clear Utilization Faculty of Metallurgical and Energy Engineering Kunming University of Science and Technology Faculty of Science Kunming University of Science and Technology

Desulfurization experiments of CuO, γ-Al2O3 and CuO/γ-Al2O3 were made in simulated flue gas by means of thermogravimetric analysis. It is found that reaction activities of CuO supported on γ-Al2O3 could be highly improved. Desulfurization kinetics of CuO/γ-Al2O3 was studied in the temperature range of 250 °C-400 °C and SO2 concentration of 0.1%-0.9%. The experimental data were tested and compared with kinetics models of volume reaction model(VRM), grain size model(GSM), random pore model(RPM) and pore-blocking model(PBM). Correlation analysis shows that VRM and RPM models do not fit experimental data well. GSM contradicts with the changes in the physical and chemical properties of Cu O/γ-Al2O3 as the desulfurization proceeds. It is found that PBM is consistent with the change of pore structure of CuO/γ-Al2O3 sorbent during desulfurization process and predicts the conversion-time curves of the sorbent well. Meanwhile, kinetics parameters are obtained and discussed.

关键词： copper oxide desulfurization kinetics γ-Al2O3

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Preparation of chain copper oxide nanoparticles by microwave

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Rare Metals 2007年第5期26卷 476-481页

作者： LI Zaiyuan LIU Yan GONG Panwei ZHAI Yuchun School of Materials and Metallurgy Northeastern University Shenyang 110004 China School of Chemical Engineering Liaoning Petroleum and Chemical Engineering University Fushun 113001 China

Cu（OH）2 nano-fibers were prepared by chemical precipitation with CuSO4·5H2O and NaOH as raw materials. The Cu（OH）2 nano-fibers have a diameter of 10-30 nm and a length of 1-6 μm. The reaction conditions were as follows： the concentration of CuSO4 solution was 0.1 mol·L^-1,NaOH solution 4 mol·L^-1,the dropping rate of the NaOH solution 50 mL·min^-1,the reaction temperature 20℃the pH value of the reaction terminal 13,and the stirring rate 1200 r·min^-1. The chain nano-CuO grains were obtained through the microwave radiation of the Cu（OH）2 nano-fibers.

关键词： copper oxide Cu(OH)2 nano-fibers microwave chain

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Graphene Nanosheets Decorated with copper oxide Nanoparticles for the Photodegradation of Methylene Blue

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Chemical Research in Chinese Universities 2022年第6期38卷 1518-1525页

作者： Samavia RAFIQ Zulfiqar Ali RAZA Muhammad ASLAM Muhammad Junaid BAKHTIYAR Department of Applied Sciences National Textile UniversityFaisalabad37610Pakistan

Textile industries extensively use colorants,such as methylene blue,and if disposed off untreated,they contaminate the effluent streams,causing a severe impact on the environment and aquatic *** degradation has been found as an inevitable approach to treat ***,we decorated the copper oxide nanoparticles on graphene nanosheets during the reflux *** resultant copper oxide/graphene nanocomposites were analyzed for structural and functional *** was observed that on increasing the copper oxide contents,the z-average size of the resultant nanocomposites *** X-ray diffraction analysis demonstrated the crystalline nature of the *** surface morphology of the copper oxide nanoparticles appeared to be spherical and that of the copper oxide/graphene composite somehow *** infrared analysis indicated successful intercalation of precursors in the *** bandgap of copper oxide/graphene nanocomposites varied in the range of 1.03—1.30 eV,which indicated their effective photocatalytic *** results demonstrated that after 120 min of exposure,the methylene blue removal efficiency reached 94.0%,92.2%,and 89.4%(mass fraction)on the copper oxide/graphene nanocomposite at copper oxide nanoparticles to graphene nanosheets ratios of 1:1,1.5:1,and 2:1(mass ratio),*** photodegradation performance of the prepared nano-catalyst was found satisfactory even after five cycles.

关键词： copper oxide Graphene nanosheet Methylene blue Photocatalysis

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Ultrafast O_(2) activation by copper oxide for 2,4-dichlorophenol degradation:The size-dependent surface reactivity

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Chinese Chemical Letters 2020年第10期31卷 2769-2773页

作者： Mingjie Huang Wei Xiang Chen Wang Tao Zhou Juan Mao Xiaohui Wu Fugang Zhang Dan Li Xiejuan Lu School of Environmental Science and Engineering Huazhong University of Science and TechnologyWuhan 430074China Key Laboratory of Water and Wastewater Treatment(HUST) MOHURDWuhan 430074China Three Gorges Base Development Co.Ltd. Yichang 443002China

This study demonstrated interesting ultrafast activation of molecular O_(2) by copper oxide(CuO)particles and very rapid elimination of aqueous 2,4-dichlo rophenol(2,4-DCP)within reaction time of 30 *** paramagnetic resonance(EPR)characterization indicated that·OH,Cu^(3+),^1 O_(2) and O_(2)^·-were generated in the CuO/O_(2) systems,wherein O_(2)^·-would be the main reactive species responsible for 2,4-DCP *** was further found that the catalytic ability of CuO for O_(2) activation was highly size dependent and nano-CuO was far reactive than micro-CuO.H2 temperature-programmed reduction(H2-TPR),X-ray photoelectron spectroscopy(XPS)and vibrating sample magnetometer(VSM)analyses revealed that both the quantity and the reactivity of the surface reaction sites(surface Cu+and O_(2))could determine the catalytic ability of CuO affecting efficient Cu^(+)-based molecular oxygen ***,the O_(2) activation ability of CuO would depend on not only the dimension,but also crystalline factors,for example,the exposed facets.

关键词： copper oxide O_(2)activation 2,4-Dichlorophenol Size-dependent Surface reactivity

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Mechanism and application on sulphidizing flotation of copper oxide with combined collectors

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Transactions of Nonferrous Metals Society of China 2019年第1期29卷 178-185页

作者： Wan-zhong YIN Qian-yu SUN Dong LI Yuan TANG Ya-feng FU Jin YAO College of Resources and Civil Engineering Northeastern University Shenyang 110819 China College of Zijin Mining Fuzhou University Fuzhou 350116 China

The effect of sodium butyl xanthate (NaBX) and dodecylamine (DDA) as combined collector on the sulphidizing flotation of copper oxide was investigated by flotation test, fluorescent pyrene probe, zeta potential, and infrared spectroscopy analyses. The micro-flotation results show that combined use of NaBX+DDA yields better effect than using NaBX at pH 7-11 only, and the optimal molar ratio of NaBX to DDA is 2: 1. The actual ores flotation shows that when the dosage of NaBX+DDA is (100+54) g/t, the copper concentrate grade and recovery are 15.93% and 76.73%, respectively. The fluorescent pyrene probe test demonstrates that the NaBX+DDA can reduce the micelle concentration in the pulp. The zeta potential and the infrared spectroscopy analyses indicate that chemical adsorption, hydrogen-bonding and electrostatic interaction can help to adsorb NaBX+DDA on the surface of malachite. Meantime, copper xanthate and copper-amine complexes may be generated during the adsorption process.

关键词： copper oxide combined collector flotation adsorption infrared spectroscopy

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Dispersion of copper oxide supported on γ-alumina and its sulfation properties

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Transactions of Nonferrous Metals Society of China 2011年第12期21卷 2644-2648页

作者：郁青春张世超杨斌昆明理工大学冶金与能源工程学院真空冶金国家工程实验室北京航空航天大学材料科学与工程学院

CuO/γ-Al2O3 catalysts were prepared by impregnation with different CuO loadings. The dispersion of CuO supported on γ-Al2O3 support was studied using X-ray diffraction （XRD）, scanning electron microscopy （SEM）, and temperature programmed reduction （TPR）. The dispersion threshold of CuO in γ-Al2O3 determined by X-ray quantitative analysis was 0.275 g/g, i.e., 0.275CuAl. Highly dispersed CuO or crystalline CuO would appear on the γ-Al2O3 support when CuO loading was below or more than its dispersion threshold. TPR experiments show that reduction peak temperature ranges of 0.1CuAl and pure CuO are 420-690 °C and 290-380 °C, respectively. 0.1CuAl is not easily reduced due to interaction between CuO and γ-Al2O3. 0.5CuAl shows a two-step reduction range during 210-300 °C and 410-730 °C, which confirms the existence of highly dispersed CuO and crystalline CuO. The sulfation experiments show the optimal CuO loading amount is far below its dispersion threshold, and copper oxide supported on γ-Al2O3 is in the form of submonolayer.

关键词： copper oxide dispersion submonolayer

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copper oxide Inked with Dye Obtained from the Lactarius Indigo Fungus for Energy Production

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Journal of Materials Science and Chemical Engineering 2022年第11期10卷 36-51页

作者： Abigail Bautista Castañeda Maria Guadalupe Montes De Oca Dulce Yolotzin Medina Velazquez Jorge Iván Aldana González Pedro Adrian Martinez Montolla Joan Reyes Miranda Miguel Angel Barron Universidad Autónoma Metropolitana Departamento de Materiales Ciencias Básicas e Ingeniería Reynosa Tamaulipas México Instituto Politécnico Nacional ESIQIE UPALM S/N Col. Mexico City México

The results obtained from the characterization of a copper deposit on indium doped tin oxide (ITO), inked with natural dye extracted from the Lactarius indigo fungus, for use in Gratzel type solar cells are reported. An electrolyte composed of 0.1 M HNO3 and 0.5 M CuSO4 was used, this solution was prepared for copper deposits on the ITO. Cyclic voltammetry was performed at different scan rates to obtain the reduction zone for deposition between potentials of ?100 to ?500 mV. The dye was obtained from the indigo Lactarius fungus from maceration, once the inked deposits were obtained, characterizations were performed, the initial test was to obtain the Ultraviolet-Visible (UV-visible) of the pure dye, and later the same test was performed on the inked oxide. Electrochemical Impedance Spectroscopy (EIS) was performed on the samples, as well as Infrared Spectroscopy (FTIR) and Scanning Electron Microscopy (SEM), to characterize the material properties for its application.

关键词： copper oxide Ink Dye Energy Production Indigo Milk Mushroom

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