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Recent progress in CdS-based S-scheme photocatalysts

Journal of Materials Science & Technology 2024年第4期171卷 162-184页

作者： Yajing Ren Yunfeng Li guixu pan Ning Wang Yan Xing Zhenyi Zhang College of Environmental and Chemical Engineering Xi’an Polytechnic UniversityXi’an 710048China Jilin Provincial Key Laboratory of Advanced Energy Materials Department of ChemistryNortheast Normal UniversityChangchun 130024China Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission Key Laboratory of Photosensitive Materials and Devices of Liaoning ProvinceSchool of Physics and Materials EngineeringDalian Minzu UniversityDalian 116600China

Photocatalytic technology with sunlight as driving force can convert solar energy into other energy sources for storage and further *** sulfide(CdS),as a typical reducing semiconductor of metal sulfides,represents an interesting research hotspot in photocatalysis due to its suitable bandgap(2.4 eV)for utilizing visible light and strong reducing ability for inducing surface catalytic ***,the photocatalytic performance of CdS is still limited by its fast carrier recombination and serious *** far,CdS semiconductor has been widely developed as a typical reducing photocatalyst in constructing novel S-scheme heterojunction to overcome the above *** this review,the de-sign concepts,basic principles,and charge transfer characteristics of CdS-based S-scheme heterojunction photocatalysts have been comprehensively *** advanced and effective characterization methods for studying the mechanism of CdS-based S-scheme heterojunction are analyzed in ***-thermore,we also summarize the typical applications of CdS-based S-scheme heterojunctions for water splitting,CO_(2) reduction,pollutant degradation,***,according to the current investigation sta-tus,some drawbacks in the current synthetic strategy,mechanism exploration,and application prospect of CdS-based S-scheme heterojunction are proposed,which need to be addressed by further expansion and innovative research.

关键词： Photocatalysis CdS semiconductor Heterojunction S-scheme Metal sulfide

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A pan-sharpening method based on the ADMM algorithm

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Frontiers of Earth Science 2019年第3期13卷 656-667页

作者： Yingxia CHEN Tingting WANG Faming FANG guixu ZHANG Department of Computer Science East China Normal UniversityShanghai 200062China School of Computer Science Yangtze UniversityJingzhou 434023China

pan-sharpening is a method of integrating low-resolution multispectral images with corresponding high-resolution panchromatic images to obtain multispectral images with high spectral and spatial resolution. A novel variational model for pan-sharpening is proposed in this paper. The model is mainly based on three hypotheses: 1) the pan-shaipened image can be linearly represented by the corresponding panchromatic image;2) the low-resolution multispectral image is down-sampled from the high-resolution multispectral image through the down-sampling operator;and 3) the satellite image has the low-rank property. Three energy components corresponding to these assumptions are integrated into a variational framework to obtain a total energy function. We adopt the alternating direction method of multipliers (ADMM) to optimize the total energy function. The experimental results show that the proposed method performs better than other mainstream methods in spectral and spatial information preserving aspect.

关键词： pan-sharpening multispectral image panchromatic image variational framework energy function ADMM

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4,4′-二(4氢-1,2,4-三氮唑-4)-1,1′-联苯锌(Ⅱ)配合物的合成、结构及热分解特性

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西安工程大学学报 2021年第6期35卷 24-30页

作者：屈晓妮潘桂旭褚超吴柏君张哲王文浩西安工程大学环境与化学工程学院陕西西安710048

为提高三唑类配合物的热稳定性,在水和乙腈混合溶剂中以4,4′-二-(4氢-1,2,4-三氮唑-4)-1,1′-联苯(dtb)与Zn^(2+)为原料,采用溶剂热法合成1例锌(Ⅱ)配合物[Zn(dtb)Cl_(2)]·2H_(2)O(1)。通过X-射线单晶衍射仪、红外光谱仪、热重分析仪... 详细信息

为提高三唑类配合物的热稳定性,在水和乙腈混合溶剂中以4,4′-二-(4氢-1,2,4-三氮唑-4)-1,1′-联苯(dtb)与Zn^(2+)为原料,采用溶剂热法合成1例锌(Ⅱ)配合物[Zn(dtb)Cl_(2)]·2H_(2)O(1)。通过X-射线单晶衍射仪、红外光谱仪、热重分析仪、紫外分光光度仪等对配合物1的结构和理化性质进行研究。结果表明:配合物1属于单斜晶系,I1_(2)/a_(1)空间群,晶胞参数为a=1.073031(13)nm,b=1.387946(18)nm,c=1.300051(16)nm,α=γ=90°,β=93.7511(11)°,V=1.93203(4)nm^(3)。相比于dtb配体,配合物1的紫外可见吸收位置发生明显红移。TG实验显示,配合物1主框架的热稳定性较dtb配体和其他三唑类配合物明显提高。

关键词： 4,4′-二-(4氢-1,2,4-三氮唑-4)-1,1′-联苯溶剂热法晶体结构热重分析

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