表面分散型金属氧化物/钛酸纳米片异质结原位构筑及可见光催化性能研究

批准号:
51802245
项目类别:
青年科学基金项目
资助金额:
25.0 万元
负责人:
卢定泽
依托单位:
学科分类:
E0211.其他无机非金属材料
结题年份:
2021
批准年份:
2018
项目状态:
已结题
项目参与者:
吴俊芳、王秋萍、余花娃、王晶、郝红娟、段宝睿、任博权
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中文摘要
异质结光催化剂能够有效改善单相半导体光催化剂光响应能力差、量子效率低等的缺陷,在光催化领域展现出广阔的应用前景。其中光生电子-空穴对在异质结界面处能够顺利地迁移和分离,是构筑高效的异质结光催化剂的前提,因此对于异质结的表/界面结构进行合理而有效的调控有利于其光催化性能的进一步提升。本项目拟在前期工作的基础上,系统开展具有高可见光催化活性的表面分散型金属氧化物/钛酸纳米片异质结催化剂的理论设计、实验合成及催化性能研究。通过改变金属氧化物的种类(稀土氧化物、过渡金属氧化物或基于它们的复合氧化物)、用量和反应条件(温度、时间、碱液浓度等),来实现钛酸纳米片层异质结的结构调控,有效拓宽可见光响应频率范围并提高光生电子-空穴对分离效率,系统探讨表面分散型异质结的原位构筑机制和可见光催化性能增强机理,从而为高性能光催化材料的设计与应用提供理论基础和技术支持。
英文摘要
The heterojunction photocatalysts can effectively overcome some of the limitations of the single-phase semiconductor photocatalysts, such as light response and charge separation, and show promising applications in photocatalysis. The structure and property of the surface/interface of heterojunctions play a critical role in the separation and transport of photogenerated carriers. Thus, control of the surface/interface of heterojunctions can greatly promote the separation and migration of photogenerated electron-hole pairs and is advantageous to further improve the photocatalytic performance of heterojunction catalysts. Based on the previous work, the project intends to design and synthesize surface-dispersed metal oxide/titanate nanosheets heterojunction with higher visible-light photocatalytic activity, and study their photocatalytic performance systematically. By controlling the kind and amount of metal oxides (rare earth oxides, transition metal oxides or compound oxide based thereon), the reaction conditions (i.e. the variety and dosage of transition metal ion, the type of the titanium source, the variety and concentration of alkali solution, reaction temperature, reaction time, etc.) in situ hydrothermal treatment, it will realize the adjustment and control of types, surface and interfacial microstructures of titanate nanosheets heterojunction. We will also study the structure-activity relationship between the structure characteristics and the photoelectric properties (the sensitivity to visible light,the generation and separation efficiency of the carriers) as well as the photocatalytic activity, and systematically clarify the mechanism of the enhancement on visible-light photocatalytic performance. It will provide a theoretical and technical support for the design and application of excellent photocatalysis materials.
异质结光催化剂能够有效改善单相半导体光催化剂光响应能力差、量子效率低等的缺陷,在光催化领域展现出广阔的应用前景。其中光生电子-空穴对在异质结界面处能够顺利地迁移和分离,是构筑高效的异质结光催化剂的前提,因此对于异质结的表/界面结构进行合理而有效的调控有利于其光催化性能的进一步提升。本项目在前期工作的基础上,系统开展了具有高可见光催化活性的表面分散型金属氧化物/钛酸纳米片异质结催化剂的理论设计、实验合成及催化性能研究。通过改变金属氧化物的种类(稀土氧化物、过渡金属氧化物或基于它们的复合氧化物)、用量和反应条件(温度、时间、碱液浓度等),实现了钛酸纳米片层异质结的结构调控,有效拓宽了可见光响应频率范围并提高光生电子-空穴对分离效率,系统探讨了表面分散型异质结的原位构筑机制和可见光催化性能增强机理,从而为高性能光催化材料的设计与应用提供了理论基础和技术支持。
期刊论文列表
专著列表
科研奖励列表
会议论文列表
专利列表
DOI:10.1016/j.apsusc.2022.152770
发表时间:2022-02
期刊:Applied Surface Science
影响因子:6.7
作者:Yuhao Zhang;Dingze Lu;Hang Li;Kiran Kumar Kondamareddy;Hongmei Wang;Boyu Zhang;J. Wang;Qiong Wu;Yimei Zeng;Xinyu Zhang;Min-Yun Zhou;N. D;Hongjuan Hao;Huanyu Pei;H. Fan
通讯作者:Yuhao Zhang;Dingze Lu;Hang Li;Kiran Kumar Kondamareddy;Hongmei Wang;Boyu Zhang;J. Wang;Qiong Wu;Yimei Zeng;Xinyu Zhang;Min-Yun Zhou;N. D;Hongjuan Hao;Huanyu Pei;H. Fan
Room temperature multiferroic properties and polymorphic phase transition-induced noticeable magnetodielectric anomalies in Fe/Co co-doped (K0.52Na0.48)NbO3 ceramics
Fe/Co 共掺杂 (K0.52Na0.48)NbO3 陶瓷中的室温多铁性和多晶型相变引起的显着磁介电异常
DOI:10.1016/j.jallcom.2020.155519
发表时间:2020-09
期刊:Journal of Alloys and Compounds
影响因子:6.2
作者:Zhou Min;Lu Xiaomei;Liu Lin;Wang Junjun;Lu Dingze;Huang Fengzhen;Zhu Jinsong;Cheng Pengfei;Wang Qiuping
通讯作者:Wang Qiuping
Fabrication of Novel Double Z-Scheme Photocatalyst WO 3 -Ag 3 PO 4 -Bi 2 WO 6 with Excellent Visible Photocatalytic Activity
具有优异可见光催化活性的新型双Z型光催化剂WO 3 -Ag 3 PO 4 -Bi 2 WO 6 的制备
DOI:10.11648/j.ijec.20180202.15
发表时间:2019-01
期刊:International Journal of Environmental Chemistry
影响因子:--
作者:Hongjuan Hao;Dingze Lu;Jintao Zhang
通讯作者:Jintao Zhang
Controllable preparation and efficient visible-light-driven photocatalytic removal of Cr(VI) using optimized Cd0.5Zn0.5S nanoparticles decorated H-Titanate nanotubes
使用优化的 Cd0.5Zn0.5S 纳米颗粒装饰 H-钛酸盐纳米管可控制备和高效可见光驱动光催化去除 Cr(VI)
DOI:10.1016/j.apt.2021.08.034
发表时间:2021-10
期刊:Advanced Powder Technology
影响因子:5.2
作者:Yuhao zhang;Dingze Lu;Kiran Kumar Kondamareddy;Boyu Zhang;Qiong Wu;Min Zhou;Yimei Zeng;Jiuxin Wang;Huanyu Pei;Neena D;Hongjuan Hao;Chi Huang;Huiqing Fan
通讯作者:Huiqing Fan
DOI:10.1016/j.arabjc.2022.103689
发表时间:2022-01
期刊:Arabian Journal of Chemistry
影响因子:6
作者:Qiong Wu;Dingze Lu;Kiran Kumar Kondamareddy;W. Ho;Dezhong Cao;Yimei Zeng;Boyu Zhang;Yuhao Zhang-Yuhao
通讯作者:Qiong Wu;Dingze Lu;Kiran Kumar Kondamareddy;W. Ho;Dezhong Cao;Yimei Zeng;Boyu Zhang;Yuhao Zhang-Yuhao
国内基金
海外基金
