[1]张 杰,杨忠林,黄鹤勇,等.氧化石墨烯固定Ag3PO4光催化降解染料罗丹明的机理研究[J].南京师范大学学报(自然科学版),2018,41(03):65.[doi:10.3969/j.issn.1001-4616.2018.03.011]
　Zhang Jie,Yang Zhonglin,Huang Heyong,et al.Study on Degradation of Rhodamine by Graphite Oxide-Ag3PO4[J].Journal of Nanjing Normal University(Natural Science Edition),2018,41(03):65.[doi:10.3969/j.issn.1001-4616.2018.03.011]
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氧化石墨烯固定Ag3PO4光催化降解染料罗丹明的机理研究()
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《南京师范大学学报》（自然科学版）[ISSN:1001-4616/CN:32-1239/N]

卷:
第41卷
期数:
2018年03期
页码:
65
栏目:
·化学·
出版日期:
2018-09-30

文章信息/Info

Title:
Study on Degradation of Rhodamine by Graphite Oxide-Ag3PO4
文章编号:
1001-4616(2018)03-0065-05
作者:
张 杰1; 杨忠林2; 黄鹤勇1; 孟祥天1; 黄钰彪1
(1.南京师范大学分析与测试中心,江苏 南京 210023)(2.中石化南京化工研究院有限公司,江苏 南京 210048)
Author(s):
Zhang Jie1; Yang Zhonglin2; Huang Heyong1; Meng Xiangtian1; Huang Yubiao1
(1.Center of Analysis and Testing,Nanjing Normal University,Nanjing 210023,China)(2.Research Institute of Nanjing Chemical Industry Co.,Ltd SINOPEC,Nanjing 210048,China)
关键词:
氧化石墨烯; Ag3PO4; 可见光; 罗丹明B
Keywords:
graphite oxide; Ag3PO4; visible light; rhodamine B
分类号:
O643.3
DOI:
10.3969/j.issn.1001-4616.2018.03.011
文献标志码:
A
摘要:
采用氧化石墨烯(GO)固定Ag3PO4,制备了一系列Ag3PO4-GO(0.5%),Ag3PO4-GO(1%),Ag3PO4-GO(1.5%),Ag3PO4-GO(2%)等复合光催化剂,并作为光催化剂降解染料罗丹明B,研究结果表明:GO固载的Ag3PO4催化剂的禁带宽度约为2.39 eV,并未受到GO显著影响. 在可见光照射下,GO的含量对催化效果有影响,GO含量约1%时,具有最佳的光催化转化效率. 溶液为中性(pH=7)或弱酸性(pH=5)时的光催化效果最佳,并且溶液的浓度越低光催化的速率越快. GO固定的催化剂Ag3PO4-GO(1%)能够促进光生电子的产生,从而显著提高了催化剂的活性和催化稳定性.
Abstract:
The objective of this investigation was to synthesize the graphite oxide-Ag3PO4(Ag3PO4-GO)composite and study its degradation properties of rhodamine(RhB). Therefore,a series of visible-light-driven GO-Ag3PO4catalysts with different GO contents,mainly including Ag3PO4-GO(0.5%),Ag3PO4-GO(1%),Ag3PO4-GO(1.5%)and Ag3PO4-GO(2%),was successfully synthesized and applied for degradation of RhB. The results showed that the band gap was approximately 2.39 eV,which was not affected by the addition of GO. Furthermore,the catalyst,Ag3PO4-GO(1%),showed the best photocatalytic activity with a pH range from 5 to 7. Additionally,the degradation rates correlated negatively with the initial concentrations of RhB. Ag+on the GO surfaces might capture photoelectron e-,which would favor Ag3PO4 to separate e- and h+ under visible light irradiation,and significantly enhanced the photocatalytic activity and stability.

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备注/Memo

备注/Memo:
收稿日期:2017-12-28.
基金项目:国家自然科学基金(41501239).
通讯联系人:杨忠林,博士,高级工程师,研究方向:有机污染物废水的催化转化与降解. E-mail:yangzl.nhgs@sinopec.com
更新日期/Last Update: 2018-11-19