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Tandem Co–O dual sites on halloysite with promoted reaction kinetics for sulfur reduction

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Journal of Energy Chemistry 2022年第12期75卷 486-493,I0013页

作者： Qiang Zhang Yinyin Qian Ji-Jun Zou Ruijie Gao Huaming Yang Engineering Research Center of Nano-geomaterials of Ministry of Education China University of GeosciencesWuhan 430074HubeiChina Hunan key laboratory of Mineral Materials and Application School of Minerals Processing and BioengineeringCentral South UniversityChangsha 410083HunanChina Faculty of Materials Science and Chemistry China University of GeosciencesWuhan 430074HubeiChina key laboratory for Green Chemical Technology of the Ministry of Education School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China key laboratory of functional geomaterials in china nonmetallic minerals industry China University of GeosciencesWuhan 430074HubeiChina

Facilitating sulfur reduction reaction(SRR)is a promising pathway to tackle the polysulfide shuttle effect and enhance the electrochemical performance of lithium-sulfur(Li-S)*** with a solo active site can reduce a reaction barrier of a certain transition-intermediate,but the linear scaling relationship between multi-intermediates still obstructs overall ***,we construct tandem Co–O dual sites with accelerating SRR kinetics by loading highly dispersed cobalt sulfide clusters on *** catalyst features Co with upshifted d-orbital and O with downshifted p-orbital,which cooperatively adsorb long-chain polysulfide and dissociate an S–S bond,thus achieving both optimal adsorption–desorption strength and reduced conversion energy barrier of multi-intermediates in *** Li-S coin batteries using the electrocatalyst endows a high specific capacity of 1224.3 m Ah g^(-1)at 0.2 C after 200cycles,and enhances cycling stability with a low-capacity decay rate of 0.03%per cycle at 1 C after1000 ***,the strategy of the tandem Co–O dual sites is further verified in a practical Li-S pouch battery that realizes 1014.1 m Ah g^(-1)for 100 cycles,which opens up a novel avenue for designing electrocatalysts to accelerate multi-step reactions.

关键词： Sulfur reduction reaction Dual catalytic site Orbit Li-S battery

Upcycling of phosphogypsum waste for efficient zinc-ion batteries

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Journal of Energy Chemistry 2023年第6期81卷 157-166,I0006页

作者： Huanwen Wang Can Luo Yinyin Qian Caihong Yang Xiaojun Shi Yansheng Gong Rui Wang Beibei He Jun Jin Aidong Tang Edison Huixiang Ang Huaming Yang Engineering Research Center of Nano-geomaterials of Ministry of Education China University of GeosciencesWuhan 430074HubeiChina Faculty of Materials Science and Chemistry China University of GeosciencesWuhan 430074HubeiChina key laboratory of functional geomaterials in china nonmetallic minerals industry China University of GeosciencesWuhan 430074HubeiChina College of Chemistry and Chemical Engineering Central South UniversityChangsha 410083HunanChina Natural Sciences and Science Education National Institute of EducationNanyang Technological UniversitySingapore 637616Singapore School of minerals Processing and Bioengineering Central South UniversityChangsha 410083HunanChina

Zinc metal is a promising anode material for next-generation aqueous batteries,but its practical application is limited by the formation of zinc *** prevent zinc dendrite growth,various Zn^(2+)-conducting but water-isolating solid-electrolyte interphase(SEI)films have been developed,however,the required high-purity chemical materials are extremely *** this work,phosphogypsum(PG),an industrial byproduct produced from the phosphoric acid industry,is employed as a multifunctional protective layer to navigate uniform zinc *** and experimental results demonstrate that PG-derived CaSO_(4)2H_(2)O can act as an artificial SEI layer to provide fast channels for Zn^(2+)***,CaSO_(4)2H_(2)O could release calcium ions(Ca^(2+))due to its relatively high Kspvalue,which have a higher binding energy than that of Zn^(2+)on the Zn surface,thus preferentially adsorbing to the tips of the protuberances to force zinc ions to nucleate at inert *** a result,the Zn@PG anode achieves a high Coulombic efficiency of 99.5%during 500 cycles and long-time stability over 1000 hours at 1 m A cm^(-2).Our findings will not only construct a low-cost artificial SEI film for practical metal batteries,but also achieve a high-value utilization of phosphogypsum waste.

关键词： Upcycling Phosphogypsum waste Zinc-ion battery Solid-electrolyte-interface Protection layer

Recovery of gallium from zinc concentrate by pressure oxygen leaching

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Rare Metals 2013年第6期32卷 622-626页

作者： Xue-Lan Wu Wen-Qing Qin Shun-Ke Wu Xi-Hong Ma Yin-Jian Niu Cong-Ren Yang School of minerals Processing and Bioengineering Central South University key laboratory of Biometallurgy of Ministry of Education Central South University china Association of Nonferrous Metal industry

Zinc concentrate with high gallium content is one of the main resources of *** gallium presents in the form of isomorphism in tetrahedron coordination with sulfur in *** research was to investigate the amenability of zinc concentrate with high gallium to pressure oxygen *** particle size,sulfuric acid concentration,oxygen partial pressure,additive amount,and time of reaction were *** extraction yields of gallium and zinc are 86%and 98%,*** optimal condition is 100 g of zinc concentrate with particle size smaller than 38 lm,sulfuric acid concentration150 g L-1,leaching temperature 150℃,leaching time120 min,oxygen partial pressure 0.7 MPa,additive amount of 0.2 wt%.

关键词： Gallium Pressure oxygen leaching Zinc concentrate

Multi-energy synergistic optimization in steelmaking process based on energy hub concept

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International Journal of minerals,Metallurgy and Materials 2021年第8期28卷 1378-1386页

作者： Shuai Liu Sheng Xie Qi Zhang State Environmental Protection key laboratory of Eco-industry Northeastern UniversityShenyang 110819China

The production process of iron and steel is accompanied by a large amount of energy production and consumption. Optimal scheduling and utilization of these energies within energy systems are crucial to realize a reduction in the cost, energy use, and CO_2 ***, it is difficult to model and schedule energy usage within steel works because different types of energy and devices are involved. The energy hub(EH), as a universal modeling frame, is widely used in multi-energy systems to improve its efficiency, flexibility, and *** paper proposed an efficient multi-layer model based on the EH concept, which is designed to systematically model the energy system and schedule energy within steelworks to meet the energy demand. Besides, to simulate the actual working conditions of the energy devices, the method of fitting the curve is used to describe the efficiency of the energy devices. Moreover, to evaluate the applicability of the proposed model, a case study is conducted to minimize both the economic operation cost and CO_2 emissions. The optimal results demonstrated that the model is suitable for energy systems within steel works. Further, the economic operation cost decreased by 3.41%, and CO_2 emissions decreased by approximately 3.67%.

关键词： multi-energy system energy hub optimization steel works

Metal halide perovskite nanocrystals with enhanced photoluminescence and stability toward anti-counterfeiting highperformance flexible fibers

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Nano Research 2023年第2期16卷 3542-3551页

作者： Ranran Zhou Chi-An Cheng Xuyi Wang Kun Nie Jing Wu Mengyun Wu Xiuqiang Duan Ziyao Hu Injamam Ul Huq Hua Wang Luoxin Wang Lefu Mei Haikun Liu Xiaoxue Ma School of Materials Science and Engineering Hubei Key Laboratory for New Textile Materials and ApplicationsKey Laboratory of Polyphenylene Sulfide Fiber and Application in Textile Industryand State Key Laboratory of New Textile Materials&Advanced Processing TechnologyWuhan Textile UniversityWuhan 430200China Beijing key laboratory of Materials Utilization of nonmetallic minerals and Solid Wastes National Laboratory of Mineral MaterialsSchool of Materials Science and TechnologyChina University of Geosciences(Beijing)Beijing 100083China Department of Bioengineering University of California Los AngelesLos Angeles 90095USA china Bluestar Chengrand Co. LtdHigh Tech Organic Fiber Key Laboratory of Sichuan ProvinceChengdu 610042China Department of Energy and Chemical Engineering Dongguan University of TechnologyDongguan 523808China

As a new type of light-collecting and luminescent material,all-inorganic cesium lead halide CsPbX_(3)(X=Cl,Br,I)perovskite nanocrystals(NCs)are expected to have a wide range of applications in the fields of photovoltaics,optoelectronics,and fluorescence anti-counterfeiting,***,improving the fluorescence performance and stability of CsPbX_(3)perovskite NCs to prompt their applications would promise both fundamental and practical significance for in-depth research in the field of halide *** this paper,we developed a modification strategy to introduce a halogen source,zinc bromide(ZnBr_(2))in hexane,to CsPbX_(3)perovskite that can be conducted under atmospheric conditions with reduced reaction cost and easier *** first work in this paper was to apply the modification strategy to CsPbI_(3)nanowires(NWs).Compared with the untreated NWs,the ZnBr_(2)/hexane modified CsPbI_(3)NWs exhibited better fluorescence ***,based on the study of perovskite NWs,we investigated perovskite nanocrystal-CsPbI_(3)nanorods(NRs)with different morphologies and *** was found that the luminescence properties of nanorods(NRs)were ***,we infiltrated the modified NRs into the aramid/polyphenylene sulfide(ACFs/PPS)composite paper yielded from our previous work to study its fluorescence performance for *** luminescence properties under ultraviolet light irradiation enable better performance in fluorescence *** ZnBr_(2)/hexane modification strategy and the applications studied in this work will expand the scope of perovskite research,laying the foundation for the applications of fluorescent anti-counterfeiting,nano-photoelectric devices,and fluorescent composite materials.

关键词： perovskite nanocomposites photoluminescence fluorescent anti-counterfeiting aramid/polyphenylene sulfide compound paper

Efficient anion immobilization enabled by structurally controllable halloysite for dendrite-free sodium metal anode

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Science china Chemistry 2023年第9期66卷 2600-2611页

作者： Caihong Yang Yicheng Hua Ying Zhang Jie Wang Huanwen Wang Liangjie Fu Aidong Tang Huaming Yang Engineering Research Center of Nano-geomaterials of Ministry of Education China University of GeosciencesWuhan 430074China laboratory of Advanced Mineral Materials China University of GeosciencesWuhan 430074China Faculty of Materials Science and Chemistry China University of GeosciencesWuhan 430074China College of Chemistry and Chemical Engineering Central South UniversityChangsha 410083China Hunan key laboratory of Mineral Materials and Application School of Minerals Processing and BioengineeringCentral South UniversityChangsha 410083China

Sodium metal has shown great potential as an inexpensive anode for rechargeable batteries. However, the growth of sodium dendrites continues to hinder the commercialization of Na metal batteries. Herein, an effective strategy using anion-anchoring halloysite nanotube(HNT) coating was proven to prevent the diffusion of anions and trigger uniform Na deposition. Through theoretical calculation, a model of active site of fixed anions exposed from HNTs after acid activation was established for the first time, revealing that Si–Al sites are effective active site of acid-activated HNTs. Furthermore, HNTs with strong and effective adsorption capacity for anions were obtained by controlling the structure of HNTs to regulate the exposure of Si–Al sites. The strong interaction between sites of acid-activated HNTs and the SO_(3)CF_(3)^(-) anion effectively promotes the dissociation of sodium salts, the release of Na^(+) and subsequent migration. As a result, HNTs acid activation for 4 h shows a steady sodium deposition process and displays high Coulombic efficiency in half cell, long cycle life in symmetric cell and full cell. This work provides a basic theoretical basis for the design of nanoclay with abundant and effective active site to fix anions for dendritic free metal batteries.

关键词： halloysite anion immobilization ion transport sodium dendrites sodium metal batteries

Enhanced photocatalytic performance of iron oxides@HTCC fabricated from zinc extraction tailings for methylene blue degradation:Investigation of the photocatalytic mechanism

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International Journal of minerals,Metallurgy and Materials 2023年第12期30卷 2364-2374页

作者： Yang Xue Xiaoming Liu Na Zhang Yang Shao Chunbao(Charles)Xu State key laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China Beijing key laboratory of Materials Utilization of nonmetallic minerals and Solid Wastes National Laboratory of Mineral MaterialsSchool of Materials Science and TechnologyChina University of GeosciencesBeijing 100083China Department of Chemical&Biochemical Engineering Western UniversityLondonON N6A 5B9Canada

Photocatalytic processes are efficient methods to solve water contamination problems,especially considering dyeing wastewater ***,high-efficiency photocatalysts are usually very expensive and have the risk of heavy metal ***,an iron oxides@hydrothermal carbonation carbon(HTCC)heterogeneous catalyst was prepared by our group through co-hydrothermal treatment of carbohydrates and zinc extraction tailings of converter ***,the catalytic performance of the iron oxides@HTCC was verified by a nonbiodegradable dye,methylene blue(MB),and the catalytic mechanism was deduced from theoretical simulations and spectroscopic *** iron oxides@HTCC showed an excellent synergy between photocatalysis and Fenton-like *** visible-light illumination,the iron oxides@HTCC could be excited to generate electrons and holes,reacting with H_(2)O_(2)to produce·OH radicals to oxidize and decompose organic *** removal efficiency of methylene blue over iron oxides@HTCC at 140 min was 2.86 times that of *** enhanced catalytic performance was attributed to the advantages of iron oxides modification:(1)promoting the excitation induced by photons;(2)improving the charge ***,the iron oxides@HTCC showed high catalytic activity in a wide pH value range of 2.3-10.4,and the MB removal efficiency remained higher than 95% after the iron oxides@HTCC was recycled 4 *** magnetically recyclable iron oxides@HTCC may provide a solution for the treatment of wastewater from the textile industry.

关键词： photocatalysis photo-Fenton reaction methylene blue degradation tailings utilization

Visualization and simulation of steel metallurgy processes

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International Journal of minerals,Metallurgy and Materials 2021年第8期28卷 1387-1396页

作者： Te Xu Guang Song Yang Yang Pei-xin Ge Li-xin Tang key laboratory of Data Analytics and Optimization for Smart industry(Northeastern University) Ministry of EducationShenyang 110819China Liaoning Engineering laboratory of Operations Analytics and Optimization for Smart industry Northeastern UniversityShenyang 110819China Liaoning key laboratory of Manufacturing System and Logistics Shenyang 110819China Institute of Industrial&Systems Engineering Northeastern UniversityShenyang 110819China

Steel production involves the transfer and transformation of material and energy at different levels, structures, and scales, and this process incurs substantial information in the material and energy dimensions. Given the black-box feature of iron and steel production processes, process visualization plays an important role and inevitably benefits parameter correction, technical support decision-making, personnel training, and other aspects of the steel metallurgy industry. The technological characteristics of the entire process in the steel industry were analyzed in this study, a visualization technology route based on virtual reality(VR) was built, and the important components of visual simulation system for steel industry and the important technical points needed to realize the system were proposed. On the foundation, a visual simulation model for the process scheduling of the iron and steel enterprise raw materials' field, slab, and hot rolling processes was built, and a visualization simulation platform of the iron and steel metallurgy plant-wide process, including ironmaking, steelmaking, hot rolling, and cold rolling, was developed. Lastly, the effectiveness of platform was illustrated by practical application.

关键词： virtual reality steel metallurgy plant-wide visualization

Review of the fabrication and application of porous materials from silicon-rich industrial solid waste

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International Journal of minerals,Metallurgy and Materials 2022年第3期29卷 424-438页

作者： Chao Miao Lixing Liang Fan Zhang Shumei Chen Kaixuan Shang Jinlong Jiang Yi Zhang Jing Ouyang Hunan key Lab of Mineral Materials and Application Department of Inorganic MaterialsSchool of Minerals Processing and BioengineeringCentral South UniversityChangsha 410083China National&Local Joint Engineering Research Center for Mineral Salt Deep Utilization Huaiyin Institute of TechnologyHuai’an 22300China key Lab of Clay Mineral functional Materials in china Building Materials industry Central South UniversityChangsha 410083China

Porous materials have promise as sound insulation, heat barrier, vibration attenuation, and catalysts. Most industrial solid wastes, such as tailings, coal gangue, and fly ash are rich in silicon. Additionally, a high silicon content waste is a potential raw material for the syn- thesis of silicon-based, multi-porous materials such as zeolites, mesoporous silica, glass-ceramics, and geopolymer foams. Representative sil- icon-rich industrial solid wastes (SRISWs) are the focus of this mini review of the processing and application of porous silicon materials with respect to the physical and chemical properties of the SRISW. The transformation methods of preparing porous materials from SRISWs are summarized, and their research status in micro-, meso-, and macro-scale porous materials are described. Possible problems in the application of SRISWs and in the preparation of functional porous materials are analyzed, and their development prospects are discussed. This review should provide a typical reference for the recycling and use of industrial solid wastes to develop sustainable “green materials.”

关键词： silicon-rich industrial solid waste porous materials physicochemical properties material utilization of solid wastes