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铁电极化增强C/Bi/Bi_(2)MoO_(6)复合材料光催化性能的研究——推荐一个综合化学实验

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大学化学 2024年第4期39卷 296-304页

作者：周鑫张志杨赟杨水金湖北师范大学化学化工学院湖北黄石435002 汉江师范学院化学与环境工程学院湖北十堰442000

本文围绕环境问题设计了一个综合化学实验。制备了C/Bi/Bi_(2)MoO_(6)复合材料,并对其施加直流电压进行电极化处理,通过扫描电镜和X射线粉末衍射等表征得出电极化法不影响材料的形貌和组成结构,并且能有效增强复合材料的光催化降解活性... 详细信息

本文围绕环境问题设计了一个综合化学实验。制备了C/Bi/Bi_(2)MoO_(6)复合材料,并对其施加直流电压进行电极化处理,通过扫描电镜和X射线粉末衍射等表征得出电极化法不影响材料的形貌和组成结构,并且能有效增强复合材料的光催化降解活性。本实验实现了化学、环境、能源与材料等多学科交叉融合,实验可操作性强且绿色环保。通过实验改进和仪器表征,激发学生的科研热情,培养创新思维和动手能力。

关键词：光催化铁电极化综合化学实验综合应用与创新能力

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g-C_(3)N_(4)@Bi_(2)WO_(6)的制备及其光催化性能研究

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徐州工程学院学报（自然科学版） 2024年第2期39卷 26-32页

作者：杨水金张晓燕熊刘燕湖北师范大学化学化工学院湖北黄石435002

将g-C_(3)N_(4)和Bi_(2)WO_(6)制备复合材料g-C_(3)N_(4)@Bi_(2)WO_(6),通过SEM、XRD以及PL等技术对g-C_(3)N_(4)@Bi_(2)WO_(6)进行了结构和光学性质的表征,并以罗丹明B(RhB)为目标染料,考察了不同负载量的催化性能差异,推测其光催化机理.实验证明复合材料稳定性很好,并且催化性能相对于纯的g-C_(3)N_(4)和Bi_(2)WO_(6)有了很大的提高.这项工作为高活性异质结构光催化剂的设计和合成提供了思路.

关键词： g-C_(3)N_(4) Bi_(2)WO_(6) 复合材料光催化机理

BiO_(2-x)/BiOCl复合材料的制备及其光催化性能的研究

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湖北大学学报（自然科学版） 2024年第3期46卷 339-346页

作者：张晓燕曹瑞姜浍杨水金湖北师范大学化学化工学院污染物分析与资源化技术湖北省重点实验室湖北黄石435002

采用简单的一步水热法制备得到片状结构的BiO_(2-x),然后通过溶剂热法将BiO_(2-x)与BiOCl进行复合,制备一系列BiO_(2-x)/BiOCl异质结复合材料。采取一系列测试的手段对所制备的BiO_(2-x)/BiOCl复合材料进行表征实验,对复合物的晶相构成... 详细信息

采用简单的一步水热法制备得到片状结构的BiO_(2-x),然后通过溶剂热法将BiO_(2-x)与BiOCl进行复合,制备一系列BiO_(2-x)/BiOCl异质结复合材料。采取一系列测试的手段对所制备的BiO_(2-x)/BiOCl复合材料进行表征实验,对复合物的晶相构成、晶体形貌、稳定性进行研究。以罗丹明B(RhB)模拟作为难降解污染物,对所制备的BiO_(2-x)/BiOCl复合材料的光催化性能进行测试,结果表明一定比例的BiO_(2-x)/BiOCl复合物比纯的BiO_(2-x),BiOCl能够更快、更好、更彻底地降解有机污染物,具有更显著的光催化活性。同时经过5次循环实验及反应前后的XRD图谱表明所制备的材料具有优异的光化学稳定性,并且可以多次重复利用。基于自由基捕获实验,我们提出了可能的光催化机理。

关键词： BiO_(2-x) BiOCl 复合材料光催化异质结

MoS_(2)/g-C_(3)N_(4)复合光催化剂的构建及其可见光催化性能研究

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井冈山大学学报（自然科学版） 2024年第3期45卷 19-25页

作者：廖文政郑涛陶珊珊江昊杨水金杨赟汉江师范学院化学与环境工程学院湖北十堰442000 湖北师范大学化学化工学院湖北黄石435002

本研究通过水热合成法和超声法成功构建MoS_(2)/g-C_(3)N_(4)复合型光催化剂。通过X射线粉末衍射(XRD)、扫描电子显微镜(SEM)、红外光谱(IR)以及紫外-可见吸收光谱(UV-Vis)表征技术对复合型催化剂的物理化学特性进行分析。以光催化降解... 详细信息

本研究通过水热合成法和超声法成功构建MoS_(2)/g-C_(3)N_(4)复合型光催化剂。通过X射线粉末衍射(XRD)、扫描电子显微镜(SEM)、红外光谱(IR)以及紫外-可见吸收光谱(UV-Vis)表征技术对复合型催化剂的物理化学特性进行分析。以光催化降解罗丹明B(RhB)为探针反应,探究可见光下不同质量比的MoS_(2)/g-C_(3)N_(4)复合型光催化剂对RhB光催化降解性能的影响。实验结果表明,当MoS_(2)负载量为30%,光催化降解80 min时,10 mg/L的RhB溶液的降解率为96.7%。MoS_(2)/g-C_(3)N_(4)复合催化剂相比于纯的g-C_(3)N_(4),MoS_(2)降解RhB的效果有显著地提高。光催化降解性能的提升归因于两半导体间MoS_(2)和g-C_(3)N_(4)异质结界面构筑,有效地抑制光生电子(e^(-))和空穴(h^(+))的复合,从而提高复合型光催化剂MoS_(2)/g-C_(3)N_(4)的光催化性能。

关键词： g-C3N4 纳米片异质结构光催化降解水热法

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铋基半导体纳米材料的改性及光催化研究进展

精细石油化工进展 2024年第2期25卷 41-47页

作者：韩梦阳陈飘张晓燕张胜余杨水金湖北师范大学化学化工学院湖北黄石435002

光催化技术在解决能源危机和环境污染方面受到了广泛的关注,其研究也取得了很多进展。光催化剂在不同领域的作用机制不同,大多数光催化剂都需要克服带隙宽、光生电荷易复合、电荷利用率低等缺陷。由于铋基光催化剂的价带中存在Bi 6s和O... 详细信息

光催化技术在解决能源危机和环境污染方面受到了广泛的关注,其研究也取得了很多进展。光催化剂在不同领域的作用机制不同,大多数光催化剂都需要克服带隙宽、光生电荷易复合、电荷利用率低等缺陷。由于铋基光催化剂的价带中存在Bi 6s和O 2p杂化轨道,使得大多数Bi基光催化剂具有较窄的可见光利用带隙,因此成为研究热点。本文以铋基半导体为研究对象,针对铋基半导体材料的优缺点,在简单介绍3种Fe^(3+)掺杂BiOCOOH、氧空位BiOCl/Bi4O5Br2和CoWO4/Bi2WO6 Z型异质结铋基半导体纳米材料改性研究的基础上,系统综述铋基半导体纳米材料的光催化降解性能及其改性研究进展,以期为相关研究提供参考。

关键词：铋基半导体光催化异质结催化剂光降解

Nitrogen availability mediates the effects of roots and mycorrhizal fungi on soil organic carbon decomposition:A meta-analysis

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Pedosphere 2024年第2期34卷 289-296页

作者： Tongshuo BAI Yunpeng QIU shuijin HU Ecosystem Ecology Laboratory College of Resources and Environmental SciencesNanjing Agricultural UniversityNanjing 210095China Department of Entomology&Plant Pathology North Carolina State UniversityRaleigh NC 27695USA

Plant roots and their associated mycorrhizal fungi critically mediate the decomposition of soil organic carbon(C),but the general patterns of their impacts over a broad geographical range and the primary mediating factors remain *** on a synthesis of 596 paired observations from both field and greenhouse experiments,we found that living roots and/or mycorrhizal fungi increased organic C decomposition by 30.9%,but low soil nitrogen(N)availability(i.e.,high soil C:N ratio)critically mitigated this promotion *** addition,the positive effects of living roots and/or mycorrhizal fungi on organic C decomposition were higher under herbaceous and leguminous plants than under woody and non-leguminous plants,***,there was no significant difference between arbuscular mycorrhizal fungi and ectomycorrhizal fungi in their effects on organic C ***,roots and/or mycorrhizal fungi significantly enhanced the decomposition of leaf litter but not root *** findings advance our understanding of how roots and their symbiotic fungi modulate soil C dynamics in the rhizosphere or mycorrhizosphere and may help improve predictions of soil global C balance under a changing climate.

关键词： arbuscular mycorrhizal fungi ectomycorrhizal fungi leaf litter leguminous plant mycorhizosphere rhizosphere root litter soil C:N ratio

Eco-friendly one-pot synthesis of acetals and ketals by heterogeneously catalyzed liquid-solid phase reaction

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Rare Metals 2006年第6期25卷 625-629页

作者： yang shuijin WANG Min LIANG Yongguang SUN Jutang Hubei Key Laboratory of Bioanalytical Technique Department of Chemistry and Environmental Engineering Hubei Normal University Huangshi435002 China College of Chemistry and Molecular Sciences Wuhan University Wuhan 430072 China

Twelve classes of acetals and ketals were synthesized from aldehyde/ketone and glycol using ZiSiW12O40/TiO2 as a novel eco-friendly catalyst. The physical characterizations were carried out by TG/DTA, FT-IR, XRD, and ^1H NMR spectra. The results indicated that the catalyst showed excellent catalytic activity for the condensation reactions. The yield of 12 classes of acetals and ketals reached 56.3%-96.3% under the typical reaction conditions （the molar ratio of aldehyde/ketone and glycol was 1：1.5, the quantity of catalyst was 0.5% of feed stock, the reaction time was 1.0 h, and the reaction temperature was 80-116℃）. The catalyst was easily recovered and reused to give almost the same yield of the product as that given by fresh TiSiW12O10/TiO2.

关键词： catalysis heteropoly acid acetalation ketalation ZiSiW12O40/TiO2

Catalytic synthesis of acetals and ketals with H3PW12O40/PAn

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Rare Metals 2008年第1期27卷 89-94页

作者： yang shuijin ZHANG Yijun DU Xinxian Philippe G. Merle Hubei Key Laboratory of Bioanalytical Technique Department of Chemistry and Environmental Engineering Hubei Normal University Huangshi 435002 China Department of Chemistry and Biochemistry Concordia University Montreal H4B 1R6 Canada

A new environmental friendly catalyst H3PW12O40/PAn was prepared and identified by means of FT-IR,XRD,and TG/*** optimum conditions have been found;that is,the mass ratio of PAn to H3PW12O40 is 1：1.5,the volume of methanol is 20 mL,and the reflux reaction time is 3 *** structural identity of Keggin units is preserved after the incorporation into polyaniline *** activities of H3PW12O40/PAn in synthesizing 2-methyl-2-ethoxycarbonylmethyl-1,3-dioxolane,2,4-dimethyl-2-ethoxycarbonylmethyl-1,3-dioxolane,cyclohexanone ethylene ketal,cyclohexanone 1,2-propanediol ketal,butanone ethylene ketal,butanone 1,2-propanediol ketal,2-phenyl-1,3-dioxolane,4-methyl-2-phenyl-1,3-dioxolane,2-propyl-1,3-dioxolane,and 4-methyl-2-propyl-1,3-dioxolane were *** has been demon-strated that H3PW12O40/PAn is an excellent *** factors concerned in these reactions were *** optimum conditions are as follows：the molar ratio of aldehyde/ketone to glycol（r） is 1：1.5,the mass ratio of the catalyst used to the reactants is 0.6%,and the reaction time is 1.0 *** these conditions,the yield is as follows：2-methyl-2-ethoxycarbonylmethyl-1,3-dioxolane,69.0%;2,4-dimethyl-2-ethoxycarbonylmethyl-1,3-dioxolane,79.5%;cyclohexanone ethylene ketal,78.9%;cyclohexanone 1,2-propanediol ketal,85.3%;butanone ethylene ketal,56.9%;butanone 1,2-propanediol ketal,78.1%;2-phenyl-1,3-dioxolane,76.3%;4-methyl-2-phenyl-1,3-dioxolane,94.2%;2-propyl-1,3-dioxolane,70.7%;and 4-methyl-2-propyl-1,3-dioxolane,79.2%.

关键词： phosphotungstic acid acetal ketal polyaniline catalysis

Two-dimensional layered In_(2)P_(3)S_(9): A novel superior anode material for sodium-ion batteries

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Journal of Energy Chemistry 2024年第3期90卷 294-304,I0008页

作者： Longsheng Zhong Hongneng Chen Yanzhe Sheng Yiting Sun Yanhe Xiao Baochang Cheng shuijin Lei School of Physics and Materials Science Nanchang UniversityNanchang 330031JiangxiChina

Developing reliable and efficient anode materials is essential for the successfully practical application of sodium-ion ***,employing a straightforward and rapid chemical vapor deposition technique,two-dimensional layered ternary indium phosphorus sulfide(In_(2)P_(3)S_(9)) nanosheets are *** layered structure and ternary composition of the In_(2)P_(3)S_(9) electrode result in impressive electrochemical performance,including a high reversible capacity of 704 mA h g^(-1) at 0.1 A g^(-1),an outstanding rate capability with 425 mA h g^(-1) at 5 A g^(-1),and an exceptional cycling stability with a capacity retention of88% after 350 cycles at 1 A g^(-1).Furthermore,sodium-ion full cell also affords a high capacity of 308 and114 mA h g^(-1) at 0.1 and 5 A g^(-1).Ex-situ X-ray diffraction and ex-situ high-resolution transmission electron microscopy tests are conducted to investigate the underlying Na-storage mechanism of In_(2)P_(3)S_(9).The results reveal that during the first cycle,the P-S bond is broken to form the elemental P and In_(2)S_(3),collectively contributing to a remarkably high reversible specific *** excellent electrochemical energy storage results corroborate the practical application potential of In_(2)P_(3)S_(9) for sodium-ion batteries.

关键词： Metal thiophosphate In_(2)P_(3)S_(9) Anode material Sodium-ion battery Full cell