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[1]邓文明,张　胜,江吉周,等.CuS nanotube/g-C3N4异质结的合成及光催化性能[J].武汉工程大学学报,2021,43(01):65-70.[doi:10.19843/j.cnki.CN42-1779/TQ.202002017]
　DENG Wenming,ZHANG Sheng,JIANG Jizhou,et al.Synthesis and Photocatalytic Performances of CuS Nanotube/g-C3N4 Heterojunction[J].Journal of Wuhan Institute of Technology,2021,43(01):65-70.[doi:10.19843/j.cnki.CN42-1779/TQ.202002017]
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CuS nanotube/g-C3N4异质结的合成及光催化性能(/HTML)
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
43
期数:
2021年01期
页码:
65-70
栏目:
材料科学与工程
出版日期:
2021-02-28

文章信息/Info

Title:
Synthesis and Photocatalytic Performances of CuS Nanotube/g-C3N4 Heterojunction
文章编号:
1674 - 2869（2021）01 - 0065 - 06
作者:
邓文明; 张　胜; 江吉周; 邹　菁*
武汉工程大学化学与环境工程学院，湖北 武汉 430205
Author(s):
DENG Wenming; ZHANG Sheng; JIANG Jizhou; ZOU Jing*
School of Chemistry and Environmental Engineering，Wuhan Institute of Technology，Wuhan 430205，China
关键词:
CuS nanotube/g-C3N4; 异质结; 化学共沉淀法; 光电催化活性; 罗丹明B
Keywords:
CuS nanotube/g-C3N4; heterojunction; chemical co-precipitation method; photocatalytic activity; rhodamine B
分类号:
O614.81
DOI:
10.19843/j.cnki.CN42-1779/TQ.202002017
文献标志码:
A
摘要:
以CuCl2·2H2O、SC（NH2）2和g-C3N4纳米片作为前驱体，在室温下采用简单的共沉淀法成功地制备了CuS nanotube/g-C3N4异质结。对碱源、g-C3N4加入顺序和反应时间等合成条件对CuS nanotube/g-C3N4异质结的光催化性能的影响进行了较系统的研究。结果表明：碱源是合成的关键因素。以Na2S·9H2O为碱源兼硫源，制备的CuS nanotube/g-C3N4异质结的光吸收边带明显红移，禁带宽度（Eg）和荧光强度明显降低，且光电流响应值为0.095 6 μA/cm2，相对于bulk g-C3N4提高了约3.1倍。将其用于光催化降解罗丹明B（RhB），45 min内RhB降解率约达100%，其降解速率相对于bulk g-C3N4提高了约47.6倍，这些结果说明CuS nanotube/g-C3N4具有较高的光电催化活性。并提出了CuS nanotube/g-C3N4异质结在光催化过程中载流子迁移转化的机理。
Abstract:
The CuS nanotube/g-C3N4 heterojunction was successfully prepared by simple co-precipitation method at room temperature with CuCl2·2H2O，SC（NH2）2 and g-C3N4 nanosheets as precursors. The effects of synthesis conditions such as alkali source，addition sequence of g-C3N4 and reaction time on the photocatalytic performances of the CuS nanotube/g-C3N4 heterojunction was systematically investigated. The results showed that the alkali source is the key factor during the synthesis. With Na2S·9H2O as the alkali and sulfur source，the light absorption sideband of the CuS nanotube/g-C3N4 heterojunction is significantly red-shifted，band gap（Eg） and fluorescence intensity are significantly reduced， while the photocurrent-response value is 0.095 6 μA/cm2，which is about 3.1 times higher than that of bulkg-C3N4. It was used for photocatalytic degradation of rhodamine B（RhB），and the degradation rate of RhB reaches about 100% within 45 min，which is about 47.6 times higher than that of bulk g-C3N4，indicating that the CuS nanotube/g-C3N4 heterojunction has higher photoelectrocatalysis activity. The mechanism of carrier migration and transformation of CuS nanotube/g-C3N4 heterojunction in the photocatalytic process was proposed.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期：2020-01-27基金项目：国家自然科学基金（21471122）；武汉工程大学第十一届研究生教育创新基金（CX2019193）作者简介：邓文明，硕士研究生。E-mail：[email protected]*通讯作者：邹　菁，博士，教授。E-mail： [email protected]引文格式：邓文明，张胜，江吉周，等. CuS nanotube/g-C3N4异质结的合成及光催化性能［J］. 武汉工程大学学报，2021，43（1）：65-70.
更新日期/Last Update: 2021-02-07