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材料导报  2024, Vol. 38 Issue (11): 22090279-7    https://doi.org/10.11896/cldb.22090279
  无机非金属及其复合材料 |
CuS/CQDs/g-C3N4复合材料的合成及光催化性能
于巧玲1,2, 刘成宝1,2,3,*, 金涛1,2, 陈丰1,2,3, 钱君超1,2,3, 邱永斌4, 孟宪荣5, 陈志刚1,2,3
1 苏州科技大学江苏省环境功能材料重点实验室,江苏 苏州 215009
2 苏州科技大学材料科学与工程学院,江苏 苏州 215009
3 苏州科技大学江苏水处理技术与材料协同创新中心,江苏 苏州 215009
4 江苏省陶瓷研究所有限公司,江苏 宜兴 214221
5 苏州市环境科学研究所,江苏 苏州 215007
Synthesis and Photocatalytic Properties of CuS/CQDs/g-C3N4
YU Qiaoling1,2, LIU Chengbao1,2,3,*, JIN Tao1,2, CHEN Feng1,2,3, QIAN Junchao1,2,3, QIU Yongbin4, MENG Xianrong5, CHEN Zhigang1,2,3
1 Jiangsu Key Laboratory for Environment Functional Materials, Suzhou University of Science and Technology, Suzhou 215009, Jiangsu, China
2 School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, Jiangsu, China
3 Jiangsu Collaborative Innovation Center of Technology and Material for Water Treatment, Suzhou University of Science and Technology, Suzhou 215009, Jiangsu, China
4 Jiangsu Province Ceramics Research Institute Co., Ltd., Yixing 214221, Jiangsu, China
5 Suzhou Institute of Environmental Science, Suzhou 215007, Jiangsu, China
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摘要 本工作以三水合硝酸铜(Cu(NO3)2·3H2O)、硫脲(CH4N2S)和柠檬汁为原料,基于水热法获得碳量子点(Carbon quantum dots,CQDs),采用超声震荡法成功合成了CuS/CQDs/g-C3N4三相复合光催化材料,构建了p-n型异质结。通过X射线衍射(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、X射线光电子能谱(XPS)、光致发光光谱(PL)、氮气吸附-脱附测试(BET)和紫外-可见光漫反射光谱(UV-Vis DRS)等方法对材料的晶体结构、微观形貌和孔结构进行了详细表征。结果表明:三相复合材料界面结构构建良好,纯度高,各相分布均匀。光催化降解实验中,当CuS的含量为10％(质量分数)时,CuS/CQDs/g-C3N4复合材料的光催化降解效果达到最佳(72.1%)。复合材料在经过四次循环降解RhB后,其光催化降解效率仍然保持在65.2%。光催化实验结果表明,·O2-自由基是光催化降解产生的主要因素,h+自由基的作用次之。
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于巧玲
刘成宝
金涛
陈丰
钱君超
邱永斌
孟宪荣
陈志刚
关键词:  石墨相氮化碳  碳量子点  过渡金属硫化物  异质结  光催化性能    
Abstract: CQDs (Carbon quantum dots) were obtained by hydrothermal method with lemon juice as the carbon source. CuS/CQDs/g-C3N4 was synthesized using copper trihydrate nitrate (Cu(NO3)2·3H2O), thiourea(CH4N2S) and lemon juice as starting materials via ultrasonic shock method. CuS/CQDs/g-C3N4 three-phase composite photocatalyst with p-n-type heterojunction structure was obtained successfully. The structure and morphology of the material were analyzed by various methods, such as XRD, SEM, TEM, XPS, PL, BET and UV-Vis. The results showed that the interface structure is well constructed with high purity and uniform distribution. In the photocatalytic degradation experiment, the best photocatalytic degradation of the CuS/CQDs/g-C3N4 composite was achieved at approximately 72.1% when the CuS content was 10wt%. After the RhB degradation in 4 cycles, the photocatalytic degradation efficiency of the composite material was not significantly reduced, and it still remained at 65.2%. Finally, it is clear that ·O2-radical is the main factor in photocatalytic degradation, and h+ radical is the second factor.
Key words:  graphitic carbon nitride    carbon quantum dots    transition metal sulfide    heterojunction    photocatalytic property
发布日期:  2024-06-25
ZTFLH:  TB333  
基金资助: 江苏省自然科学基金(BK20180103;BK20180971);苏州市科技发展计划项目(SS202036)
通讯作者:  *刘成宝,苏州科技大学材料科学与工程学院副教授、硕士研究生导师。2004年本科毕业于江苏大学无机非金属材料工程专业,2007年获江苏大学材料学专业工学硕士学位,2010年获江苏大学材料学专业工学博士学位。2018年在美国罗格斯大学材料科学与工程系担任为期一年的访问学者。2016年8月被遴选为江苏省第五期“333高层次人才培养工程”中青年学术技术带头人培养对象。主要从事二维基催化材料、量子点材料和环境功能材料等的结构设计、合成及其环境和能源性能评价研究。已在Ceramics International、Journalof Alloys and Compounds、Journal of Rare Earths等国内外重要期刊发表学术论文110余篇,其中SCI收录80余篇;申请国家发明专利18项,其中已获授权13项。Lcb@mail.usts.edu.cn   
作者简介:  于巧玲,2021年毕业于宿州学院,获得工学学士学位,现为苏州科技大学材料科学与工程学院硕士研究生,在刘成宝副教授的指导下进行研究。目前主要研究领域为环境和能源材料的设计合成及性能评价。
引用本文:    
于巧玲, 刘成宝, 金涛, 陈丰, 钱君超, 邱永斌, 孟宪荣, 陈志刚. CuS/CQDs/g-C3N4复合材料的合成及光催化性能[J]. 材料导报, 2024, 38(11): 22090279-7.
YU Qiaoling, LIU Chengbao, JIN Tao, CHEN Feng, QIAN Junchao, QIU Yongbin, MENG Xianrong, CHEN Zhigang. Synthesis and Photocatalytic Properties of CuS/CQDs/g-C3N4. Materials Reports, 2024, 38(11): 22090279-7.
链接本文:  
http://www.mater-rep.com/CN/10.11896/cldb.22090279  或          http://www.mater-rep.com/CN/Y2024/V38/I11/22090279
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