Efficient photocatalytic reactions of Cr(vi) reduction and ciprofloxacin and RhB oxidation with Sn(ii)-doped BiOBr

Xu，Ling1; Chen，Wen Qian1,3; Ke，Shu Qiang1; Zhu，Min1; Qiu，Wen Hui3,4; Liu，Ning5; Namuangruk，Supawadee6,7; Maitarad，Phornphimon7; Impeng，Sarawoot6; Tang，Liang1,2

2019

10.1039/c9cy01405e

Catalysis Science & Technology   影响因子和分区

2044-4753

2044-4761

Bismuth oxyhalides (e.g., BiOBr) are promising photocatalysts for the removal of organic contaminants. However, the efficiency of BiOBr is largely limited by its band structure. Here, we have found that Sn doped into BiOBr can modify its band structure; a suitable band structure facilitates the dual catalytic functions of oxidation and reduction, considerably improving the photocatalytic performances. Systematic characterizations suggest that Sn cations were homogeneously dispersed into BiOBr. By varying the doping amount of Sn, we found that BiSn(OBr) (x = 0.2) catalyst exhibited the highest photocatalytic activity. The elimination rates of Cr(vi) (15 mg L) and CIP (20 mg L) could reach more than 95% in 60 and 40 min, respectively, under visible-light irradiation. In contrast to bare BiOBr, the degradation rates of Cr(vi) and CIP over BiSn(OBr) (x = 0.2) increased by around 45 and 2 times, respectively. The active substances of the BiSn(OBr) catalyst and the environmental impact factors during the catalytic degradation of CIP were determined, and two possible degradation routes were proposed.

SCI ; EI

英语

其他

State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control[2017B030301012]

Chemistry

Chemistry, Physical

WOS:000493075200003

ROYAL SOC CHEMISTRY

20194507624467

Band structure ; Bismuth compounds ; Bromine compounds ; Catalysts ; Catalytic oxidation ; Chromium compounds ; Degradation ; Environmental impact ; Photocatalytic activity ; Rhodium compounds ; Tin compounds

Environmental Impact and Protection:454.2 ; Chemical Reactions:802.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Solid State Physics:933

2-s2.0-85074344877

Scopus

1.School of Environmental and Chemical EngineeringShanghai University,Shanghai,200444,China
2.Key Laboratory of Organic Compound Pollution Control Engineering (MOE)Shanghai University,Shanghai,200444,China
3.Shanghai Institute of Applied RadiationShanghai University,Shanghai,20 Chengzhong Road,201800,China
4.Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution ControlSchool of Environmental Science and EngineeringSouthern University of Science and Technology,Shenzhen,518055,China
5.School of Environment and ArchitectureUniversity of Shanghai for Science and Technology,Shanghai,200093,China
6.National Nanotechnology Center (NANOTEC)National Science and Technology Development Agency (NSTDA),Thailand
7.Research Center of Nano Science and TechnologyShanghai University,Shanghai,200444,China

Xu，Ling,Chen，Wen Qian,Ke，Shu Qiang,et al. Efficient photocatalytic reactions of Cr(vi) reduction and ciprofloxacin and RhB oxidation with Sn(ii)-doped BiOBr[J]. Catalysis Science & Technology,2019,9(21):5953-5961.

Xu，Ling.,Chen，Wen Qian.,Ke，Shu Qiang.,Zhu，Min.,Qiu，Wen Hui.,...&Tang，Liang.(2019).Efficient photocatalytic reactions of Cr(vi) reduction and ciprofloxacin and RhB oxidation with Sn(ii)-doped BiOBr.Catalysis Science & Technology,9(21),5953-5961.

Xu，Ling,et al."Efficient photocatalytic reactions of Cr(vi) reduction and ciprofloxacin and RhB oxidation with Sn(ii)-doped BiOBr".Catalysis Science & Technology 9.21(2019):5953-5961.