研磨-煅烧法制备WO3/ZnS异质结光催化剂及其光催化性能

中国有色金属学报, 2016, 26(1): 118-125.

研磨-煅烧法制备WO3/ZnS异质结光催化剂及其光催化性能

樊启哲 ^1, , 余长林 ^2, , 李家德 ^3, , 李鑫 ^4, , 周晚琴 ^5,

1.江西理工大学冶金与化学工程学院,赣州,341000

2.江西理工大学冶金与化学工程学院,赣州,341000

3.江西理工大学冶金与化学工程学院,赣州,341000

4.江西理工大学冶金与化学工程学院,赣州,341000

5.江西理工大学信息工程学院,赣州,341000

基金项目: 江西省教育厅高等学校科技落地计划项目(KJLD14046) 国家自然科学基金资助项目(21067004,21567008,21263005) Project(GJJ12344)supported by Fund of Scinece and Technology in Jiangxi Province Department of Education,China Project(20122BCB23015)supported by Young Scientists Cultivating Object Program of Jiangxi Province,China 江西省自然科学基金青年科学基金计划(20133BAB21003) 江西省教育厅科技基金资助项目(GJJ12344) Project(KJLD14046)supported by the Landing Project of Science and Technology of Colleges and Universities in Jiangxi Province,China 江西省青年科学家培养项目(20122BCB23015)Projects(21067004,21567008,21263005)supported by the National Natural Science Foundation of China Project(20133BAB21003)supported by Jiangxi Province Natural Science Foundation of China Youth Science Fund,China

关键词：研磨-煅烧 , ZnS , WO3耦合 , 异质结 , 光催化 , 染料

WO3/ZnS heterostructured photocatalysts prepared by grinding-calcination method and their photocatalytic performance

Keywords： grinding-calcination , ZnS , WO3 coupling , heterostructure , photocatalytic , dyes

采用研磨-煅烧法在ZnS中复合不同含量的WO3(0.5％～8％,质量分数),形成WO3/ZnS异质结光催化剂,利用N2物理吸附、X射线衍射(XRD)、扫描电镜(SEM)、透射电镜(TEM)、紫外可见漫反射光谱(UV-vis DRS)、红外光谱(FT-IR)、光电子能谱(xPs)和光致发光谱(PL)等对合成的样品进行了表征;考察不同WO3含量样品对ZnS的结晶度、比表面积、表面羟基、光吸收性能的影响,并以λ=254 nm的紫外光为光源,评价该催化剂光催化降解酸性橙Ⅱ的活性,考察WO3复合对WO3/ZnS样品光催化性能的影响.结果表明:WO3的复合可抑制ZnS晶粒在煅烧过程中的长大,同时提高催化剂的比表面积和催化剂表面的羟基数量,并能有效地抑制光生电子与空穴的复合.当复合1％WO3(质量分数),所制备的WO3/ZnS催化剂的活性最高,比纯ZnS的活性提高了1.8倍.其原因是复合样品具有较好的组织结构的性能,同时,形成的WO3/ZnS异质结有利于光生电子与空穴的分离,从而显著提高光催化剂的脱色活性和稳定性.

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