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7篇 您的检索式:作者名="MA ChangChang"
    题名 作者 年代 出处 被引量
1Construction of vesicle CdSe nano-semiconductors photocatalysts with improved photocatalytic activity:Enhanced photo induced carriers separation efficiency and mechanism insight显示文摘Visible-light-driven photocatalysis as a green technology has attracted a lot of attention due to its potential applications in environmental remediation. Vesicle Cd Se nano-semiconductor photocatalyst are successfully prepared by a gas template method and characterized by a variety of methods. The vesicle Cd Se nano-semiconductors display enhanced photocatalytic performance for the degradation of tetracycline hydrochloride, the photodegradation rate of78.824% was achieved by vesicle Cd Se, which exhibited an increase of 31.779% compared to granular Cd Se. Such an exceptional photocatalytic capability can be attributed to the unique structure of the vesicle Cd Se nano-semiconductor with enhanced light absorption ability and excellent carrier transport capability. Meanwhile, the large surface area of the vesicle Cd Se nano-semiconductor can increase the contact probability between catalyst and target and provide more surface-active centers. The photocatalytic mechanisms are analyzed by active species quenching. It indicates that h+and UO_2^-are the main active species which play a major role in catalyzing environmental toxic pollutants. Simultaneously, the vesicle Cd Se nano-semiconductor had high efficiency and stability.Jiangsu Wen Changchang Ma Pengwei Huo Xinlin Liu Maobin Wei Yang Liu Xin Yao Zhongfei Ma Yongsheng Yan 2017Journal of Environmental Sciences2017,29,10:3
2Recent research progress of bimetallic phosphides-based nanomaterials as cocatalyst for photocatalytic hydrogen evolution显示文摘Hydrogen energy(H_(2)) has been considered as the most possible consummate candidates for replacing the traditional fossil fuels because of its higher combustion heat value and lower environmental pollution.Photocatalytic hydrogen evolution(PHE) from water splitting based on semiconductors is a promising technology towards converting solar energy into sustainable H_(2)fuel evolution. Developing high-activity and abundant source semiconductor materials is particularly important to realize highly efficient hydrogen evolution as for photocatalysis technology. However, unmodified pristine photocatalysts are often unable to overcome the weakness of low performance due to their limitations. In recent years, transition metal phosphides(TMPs) were used as valid co-catalysts to replace the classic precious metal materials in the process of photocatalytic reaction owing to their lower cost and higher combustion heat value.What is more, bimetallic phosphides have been also caused widespread concern in H_(2)evolution reaction owing to its much lower overpotential, more superior conductivity, and weaker charge carriers transfer impedance in comparison to those of single metal phosphides. In this minireview, we concluded the latest developments of bimetallic phosphides for a series of photocatalytic reactions. Firstly, we briefly summarize the present loading methods of bimetallic phosphides(BMPs) anchored on the photocatalyst. After that, the H;evolution efficiency based on BMPs as cocatalyst is also studied in detail. Besides, the application of BMPs-based host photocatalyst for H_(2)evolution under dye sensitization effect has also been discussed. At last, the current development prospects and prospective challenges in many ways of BMPs are proposed. We sincerely hope this minireview has certain reference value for great developments of BMPs in the future research.Chunmei Li Daqiang Zhu Shasha Cheng Yan Zuo Yun Wang Changchang Ma Hongjun Dong 2022Chinese Chemical Letters2022,33,3:2
3Recent advances in RNA structurome显示文摘RNA structures are essential to support RNA functions and regulation in various biological processes. Recently, a range of novel technologies have been developed to decode genome-wide RNA structures and novel modes of functionality across a wide range of species. In this review, we summarize key strategies for probing the RNA structurome and discuss the pros and cons of representative technologies. In particular, these new technologies have been applied to dissect the structural landscape of the SARS-CoV-2 RNA genome. We also summarize the functionalities of RNA structures discovered in different regulatory layers-including RNA processing, transport, localization, and mRNA translation-across viruses, bacteria, animals, and plants. We review many versatile RNA structural elements in the context of different physiological and pathological processes(e.g., cell differentiation, stress response, and viral replication). Finally, we discuss future prospects for RNA structural studies to map the RNA structurome at higher resolution and at the single-molecule and single-cell level, and to decipher novel modes of RNA structures and functions for innovative applications.Bingbing Xu Yanda Zhu Changchang Cao Hao Chen Qiongli Jin Guangnan Li Junfeng Ma Siwy Ling Yang Jieyu Zhao Jianghui Zhu Yiliang Ding Xianyang Fang Yongfeng Jin Chun Kit Kwok Aiming Ren Yue Wan Zhiye Wang Yuanchao Xue Huakun Zhang Qiangfeng Cliff Zhang Yu Zhou 2022Science China(Life Sciences)2022,65,7:1
4High-temperature treatment to engineer the single-atom Pt coordination environment towards highly efficient hydrogen evolution显示文摘Development of high-performance and cost-effective catalysts for electrocatalytic hydrogen evolution reaction(HER)play crucial role in the growing hydrogen economy.Recently,the atomically dispersed metal catalysts have attracted increasing attention due to their ultimate atom utilization and great potential for highly cost-effective and high-efficiency HER electrocatalyst.Herein,we propose a hightemperature treatment strategy to furtherly improve the HER performance of atomically dispersed Ptbased catalyst.Interestingly,after appropriate high-temperature treatment on the atomically dispersed Pt0.8@CN,the Pt species on the designed N-doped porous carbon substrate with rich defect sites can be re-dispersed to single atom state with new coordination environment.The obtained Pt0.8@CN-1000 shows superior HER performance with overpotential of 13 m V at 10 m A cm^(-2)and mass activity of 11,284 m A/mgPtat-0.1 V,much higher than that of the pristine Pt0.8@CN and commercial Pt/C catalyst.The experimental and theoretical investigations indicate that the high-temperature treatment induces the restructuring of coordination environment and then the optimized Pt electronic state leads to the enhanced HER performances.This work affords new strategy and insights to develop the atomically dispersed high-efficiency catalysts.Shanyong Chen Changchang Lv Ling Liu Muhong Li Jian Liu Jinyang Ma Panpan Hao Xuan Wang Weiping Ding Mingjiang Xie Xuefeng Guo 2021Journal of Energy Chemistry2021,30,8:0
5In situ construction of BiVO_(4)(-)cellulose fibers@CDs(-)polyvinyl alcohol composites for tetracycline photocatalytic degradation显示文摘Non-biodegradable and toxic photocatalysts pose as secondary threats to the environmental security.In this work,non-toxic biocomposites were prepared using natural bamboo cellulose fibers(CF),polyvinyl alcohols(PVAs),BiVO_(4),and carbon dots(CDs)from biomaterials.Thereafter,their optical properties,chemical characterizations,and photocatalytic performances were evaluated.The novel BiVO_(4)(-)CF@CDs(-)PVA composites were prepared via the combined implementation of in situ and impregnation methods.The optical properties revealed that the CDs and fibers increased the range and intensity of light absorption.The PVAs were used as the shield and dispersant to enhance stability because they have numerous chemical groups.In view of the various possible paths of electron migration,the enhanced photocatalytic activity of BiVO_(4)(-)CF@CDs(-)PVA composites for tetracycline degradation was observed under visible light illumination.The origins of the structure,morphology,and optical mechanism in the enhancement of the photocatalytic ability of BiVO_(4)(-)CF@CDs(-)PVA composites were discussed and demonstrated.WANG Tao LIU XiQing MA ChangChang WEI MaoBin HUO PengWei YAN YongSheng 2021Science China(Technological Sciences)2021,64,3:0
6HZSM-5 zeolites undergoing the high-temperature process for boosting the bimolecular reaction in n-heptane catalytic cracking显示文摘High-temperature treatment is key to the preparation of zeolite catalysts.Herein,the effects of hightemperature treatment on the property and performance of HZSM-5 zeolites were studied in this work.X-Ray diffraction,N2physisorption,27Al magic angle spinning nuclear magnetic resonance(MAS NMR),and temperature-programmed desorption of ammonia results indicated that the hightemperature treatment at 650℃ hardly affected the inherent crystal and texture of HZSM-5zeolites but facilitated the conversion of framework Al to extra-framework Al,reducing the acid site and enhancing the acid strength.Moreover,the high-temperature treatment improved the performance of HZSM-5 zeolites in n-heptane catalytic cracking,promoting the conversion and light olefins yield while inhibiting coke formation.Based on the kinetic and mechanism analysis,the improvement of HZSM-5 performance caused by high-temperature treatment has been attributed to the formation of extra-framework Al,which enhanced the acid strength,facilitated the bimolecular reaction,and promoted the entropy change to overcome a higher energy barrier in n-heptane catalytic cracking.Chenggong Song Zhenzhou Ma Xu Hou Hao Zhou Huimin Qiao Changchang Tian Li Yin Baitang Jin Enxian Yuan 2024Chinese Journal of Chemical Engineering2024,66,2:0
7Fabrication of HRP/Bi_(2)WO_(6) photoenzyme-coupled artificial catalytic system for efficiently degrading bisphenol A显示文摘A novel photoenzyme-coupled artificial catalytic system is fabricated by immobilizing horseradish peroxidase(HRP)on the Bi_(2)WO_(6)hollow nanospheres via a facile electrostatic self-assembly process.The obtained Bi_(2)WO_(6)/HRP sample not only improves the visible light harvest ability but also promotes the high-efficiency separation of charge carriers.More importantly,the photogenerated electrons and produced H2O2 on Bi_(2)WO_(6)directly take part in redox cycle reactions of HRP to induce photoenzyme synergic catalytic effect.In consequence,the degradation activity of Bi_(2)WO_(6)/HRP is significantly improved relative to Bi_(2)WO_(6)and HRP for removing bisphenol A(BPA)under the visible light irradiation.This work launches a feasible design strategy for exploiting photoenzyme-coupled artificial catalytic system with special structure to degrade organic pollutants in water efficiently.Hongjun Dong Ning Song Ming Yan Huihui Wu Haibo Zhang Changchang Ma Yun Wang 2021Chinese Chemical Letters2021,32,6:0
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