原位诱导CuCo2S4@CuCo2O4异质结催化剂的构筑及光催化性能研究
Study on in situ growth of CuCo2S4@CuCo2O4 heterojunction catalyst for photocatalytic application
霍西学 1于晓婷 1李慧 1迟忠美 1王琼2
作者信息
- 1. 渤海大学化学与材料工程学院,辽宁 锦州 121000
- 2. 渤海大学化学与材料工程学院,辽宁 锦州 121000;渤海大学海洋研究院,辽宁 锦州 121000
- 折叠
摘要
利用一步水热法结合原位硫化策略成功制备了具有丰富孔隙和紧密异质结界面的CuCo2S4@CuCo2O4 半导体催化剂,层级多孔的形貌有效地提高了催化剂的光捕获能力,异质结内建电场和低能垒界面协同促进了光生载流子的定向转移与分离,进而提高催化剂的光催化能力.研究结果表明,通过调控硫源的加入量,CuCo2S4@CuCo2O4-3 对双氯芬酸和罗丹明B的降解率分别为81.9%和 90.3%,对Cr6+的还原率可达73.9%.催化剂展现出良好的抗干扰能力和循环稳定性,CuCo2S4@Cu-Co2O4 对水体中有机污染物和重金属离子均有较好的催化去除能力.
Abstract
CuCo2S4@CuCo2O4 semiconductor catalysts with abundant pore and tight heterogeneous interface are successfully prepared through using one-step hydrothermal method combined with in situ sulfide strategy.The hierarchical porous morphology of catalysts improves effectively their ability to capture the light.Furthermore,the coordination between heterojunction built-in electric field and low-power base interface promotes the directional transfer and separation of photo generated charge carriers,thus improving the photocatalytic ability of the catalyst.Study results show that the degradation rates of diclofenac acid and rhodamine B by CuCo2S4@CuCo2O4-3 are 81.9%and 90.3%,respectively,and the reduction rate of Cr6+is 73.9%through adjusting the addition amount of sulfur source.The catalysts show good anti-interference ability and cycle stability,and CuCo2S4@CuCo2O4 has good catalytic removal ability for organic pollutants and heavy metal ions in water.
关键词
半导体异质结/光催化/双氯芬酸/罗丹明B/Cr6+Key words
semiconductor heterojunction/photocatalysis/diclofenac acid/rhodamine B/Cr6+引用本文复制引用
基金项目
国家自然科学基金青年项目(22205027)
辽宁省博士启动项目(2021-BS-253)
辽宁省教育厅青年"育苗"项目(LQ2020014)
出版年
2024
NETL
NSTL
万方数据