论文题目:

Photocatalytical degradation of diclofenac by Ag-BiOI-rGO: Kinetics, mechanisms and pathways

英文论文题目:

Photocatalytical degradation of diclofenac by Ag-BiOI-rGO: Kinetics, mechanisms and pathways

第一作者:

Li, W. F.

英文第一作者:

Li, W. F.

联系作者:

于泳

英文联系作者:

Yu Yong

发表年度:

2019

卷:

218

页码:

966-973

摘要:

A novel ternary nanocomposite photocatalyst, Ag-BiOI- reduced graphene oxide (rGO), driven by visible light was successfully synthesized with hydrothermal strategy. XRD, SEM, TEM, HRTEM, EDS, raman spectroscopy, XPS, DRS, photocurrent and EIS analysis were employed to characterize all synthesized compounds. Compared to pure BiOI, Ag-BiOI and BiOI-rGO, the 5？mol% Ag-BiOI-rGO 5？wt% displayed superior photocatalytic capability with complete removal of diclofenac (10.0？μg？mL？1) in 80？min under visible light. The characterization results indicated that the addition of Ag and rGO enhanced the charge separation and suppressed the recombination of photogenerated electrons and holes, which upgraded the ability of Ag-BiOI-rGO to degrade diclofenac compared with BiOI. Six reaction intermediates of diclofenac were detected by LC-MS/MS, subsequently, two degradation routes were proposed. This work provides a promising strategy to fabricate more effective photocatalysts to deal with organic pollutants in wastewater. 

英文摘要:

A novel ternary nanocomposite photocatalyst, Ag-BiOI- reduced graphene oxide (rGO), driven by visible light was successfully synthesized with hydrothermal strategy. XRD, SEM, TEM, HRTEM, EDS, raman spectroscopy, XPS, DRS, photocurrent and EIS analysis were employed to characterize all synthesized compounds. Compared to pure BiOI, Ag-BiOI and BiOI-rGO, the 5？mol% Ag-BiOI-rGO 5？wt% displayed superior photocatalytic capability with complete removal of diclofenac (10.0？μg？mL？1) in 80？min under visible light. The characterization results indicated that the addition of Ag and rGO enhanced the charge separation and suppressed the recombination of photogenerated electrons and holes, which upgraded the ability of Ag-BiOI-rGO to degrade diclofenac compared with BiOI. Six reaction intermediates of diclofenac were detected by LC-MS/MS, subsequently, two degradation routes were proposed. This work provides a promising strategy to fabricate more effective photocatalysts to deal with organic pollutants in wastewater. 

刊物名称:

Chemosphere

英文刊物名称:

Chemosphere

参与作者：

W. F. Li, R. Yu, M. Li, N. Guo, H. W. Yu and Y. Yu

英文参与作者：

W. F. Li, R. Yu, M. Li, N. Guo, H. W. Yu and Y. Yu