混合溴源制备Sb_2O_3/BiOBr及其对水产养殖废水的降解
|
摘要
以混合溴源制备BiOBr,通过水热法制备Sb_2O_3/BiOBr复合光催化剂。在模拟可见光条件下研究了复合光催化材料对水产养殖废水中NH_4~+-N的去除效果。结果表明,当Sb_2O_3的掺杂量为3%,n(NaBr)∶n(CTAB)=1∶1,催化剂用量0.4 g/L时对NH_4~+-N的降解率最高,2 h内NH_4~+-N的降解率达到了89.1%。这与复合物表面羟基(—OH)的产生及其表面强内电场(110)晶面的暴露密切相关。
BiOBr prepared from a mixed bromine source,then Sb_2O_3/BiOBr composite photocatalyst was prepared by a hydrothermal method.The removal effect of NH_4~+-N in aquaculture wastewater on the composite photocatalytic material was studied under simulated sunlight irradiation.The results show that when the doping content of Sb_2O_3 is 3% and the molar ratio of NaBr∶CTAB=1∶1,when the dosage is 0.4 g/L,the degradation rate of NH_4~+-N is highest,reaching 89.1% in 2 h.This is closely related to the generation of hydroxyl(—OH) on the surface of the complex and the exposure of the(110) crystal plane which have a relatively strong internal electric field.
BiOBr prepared from a mixed bromine source,then Sb_2O_3/BiOBr composite photocatalyst was prepared by a hydrothermal method.The removal effect of NH_4~+-N in aquaculture wastewater on the composite photocatalytic material was studied under simulated sunlight irradiation.The results show that when the doping content of Sb_2O_3 is 3% and the molar ratio of NaBr∶CTAB=1∶1,when the dosage is 0.4 g/L,the degradation rate of NH_4~+-N is highest,reaching 89.1% in 2 h.This is closely related to the generation of hydroxyl(—OH) on the surface of the complex and the exposure of the(110) crystal plane which have a relatively strong internal electric field.
引文
[1] 农业部渔业局编制.中国渔业统计年鉴2016[M].北京:中国农业出版社,2016.
[2] 吴伟,范立民.水产养殖环境的污染及其控制对策[J].中国农业科技导报,2014,16(2):26-34.
[3] Abeysinghe D H,Shanableh A,Rigden B.Biofilters for water reuse in aquaculture[J].Water Science & Technology,1996,34(11):253-260.
[4] Ling C,Wang W,Yi Y,et al.Environmental impact of aquaculture and countermeasures to aquaculture pollution in China[J].Environmental Science and Pollution Research International,2007,14(7):452-462.
[5] 赵起越,李会军,荆红卫,等.水产养殖业使用抗生素造成的地表水污染及检测方法[J].分析试验室,2018(1):103-107.
[6] Wee N L,Tng Y Y,Cheng H T,et al.Ammonia toxicity and tolerance in the brain of the African sharptooth catfish,Clarias gariepinus[J].Aquatic Toxicology,2007,82(3):204-213.
[7] Reddy-Lopata K,Auerswald L,Cook P.Ammonia toxicity and its effect on the growth of the South African abalone Haliotis midae,Linnaeus[J].Aquaculture,2006,261(2):678-687.
[8] Wang L,Wen M,Wang W Y,et al.Photocatalytic degradation of organic pollutants using rGO supported TiO2-CdS composite under visible light irradiation[J].J Alloy Compd,2016,683:318-328.
[9] Asahi R,Morikawa T,Ohwaki T,et al.Visible-light photocatalysis in nitrogen-doped titanium oxides[J].Science,2001,293(5528):269-271.
[10] Fujishima A,Honda K.Electrochemical photolysis of water at a semiconductor electrode[J].Nature,1972,238(5358):37-38.
[11] Cheng H,Huang B,Dai Y.Engineering BiOX (X=Cl,Br,I) nanostructures for highly efficient photocatalytic applications[J].Nanoscale,2014,6(4):2009-2026.
[12] Shi X J,Chen X,Chen X L,et al.PVP assisted hydrothermal synthesis of BiOBr hierarchical nanostructures and high photocatalytic capacity[J].Chem Eng J,2013,222:120-127.
[13] Zhang J,Shi F,Lin J,et al.Self-assembled 3-D architectures of BiOBr as a visible light-driven photocatalyst[J].Cheminform,2008,39(30):2937-2941.
[14] Zhao Y,Tan X,Yu T,et al.SDS-assisted solvothermal synthesis of BiOBr microspheres with highly visible-light photocatalytic activity[J].Materials Letters,2016,164:243-247.
[15] 方俊华,张凯,张伟,等.混合溴源制备BiOBr微球及其可见光催化性能[J].硅酸盐学报,2017,45(4):572-578.
[16] He G H,Liang C J,Ou Y D,et al.Preparation of novel Sb2O3/WO3,photocatalysts and their activities under visible light irradiation[J].Materials Research Bulletin,2013,48(6):2244-2249.
[17] Lamba R,Umar A,Mehta S K,et al.Sb2O3-ZnO nanospindles:A potential material for photocatalytic and sensing applications[J].Ceramics International,2014,41(4):5429-5438.
[18] 方俊华,张凯,张伟,等.Sb2O3/BiOBr复合物的制备及其对RhB的去污作用[J].化工进展,2017,36(3):1140-1146.
[19] Liu D N,He G H,Zhu L,et al.Enhancement of photocatalytic activity of TiO2 nanoparticles by coupling Sb2O3[J].Applied Surface Science,2012,258(20):8055-8060.
[20] Minero C,Mariella G,Maurino V,et al.Photocatalytic transformation of organic compounds in the presence of inorganic anions.1.Hydroxyl-mediated and direct electron-transfer reactions of phenol on a titanium dioxide-fluoride system[J].Langmuir,2000,16(6):2632-2641.
[21] Di J,Xia J,Ge Y,et al.Facile fabrication and enhanced visible light photocatalytic activity of few-layer MoS2 coupled BiOBr microspheres[J].Dalton Transactions,2014,43(41):15429.
[22] Wang W,Huang F,Lin X,et al.Visible-light-responsive photocatalysts xBiOBr-(1-x)BiOI[J].Catalysis Communications,2008,9(1):8-12.
[23] Cui W Q,An W J,Liu L,et al.Synthesis of CdS/BiOBr composite and its enhanced photocatalytic degradation for Rhodamine B[J].Applied Surface Science,2014,319:298-305.
[24] 李元昊,丁忠浩,陶小明,等.油田氨氮废水的纳米TiO2光催化处理[J].湖北农业科学,2013,52(21):5186-5188.
[2] 吴伟,范立民.水产养殖环境的污染及其控制对策[J].中国农业科技导报,2014,16(2):26-34.
[3] Abeysinghe D H,Shanableh A,Rigden B.Biofilters for water reuse in aquaculture[J].Water Science & Technology,1996,34(11):253-260.
[4] Ling C,Wang W,Yi Y,et al.Environmental impact of aquaculture and countermeasures to aquaculture pollution in China[J].Environmental Science and Pollution Research International,2007,14(7):452-462.
[5] 赵起越,李会军,荆红卫,等.水产养殖业使用抗生素造成的地表水污染及检测方法[J].分析试验室,2018(1):103-107.
[6] Wee N L,Tng Y Y,Cheng H T,et al.Ammonia toxicity and tolerance in the brain of the African sharptooth catfish,Clarias gariepinus[J].Aquatic Toxicology,2007,82(3):204-213.
[7] Reddy-Lopata K,Auerswald L,Cook P.Ammonia toxicity and its effect on the growth of the South African abalone Haliotis midae,Linnaeus[J].Aquaculture,2006,261(2):678-687.
[8] Wang L,Wen M,Wang W Y,et al.Photocatalytic degradation of organic pollutants using rGO supported TiO2-CdS composite under visible light irradiation[J].J Alloy Compd,2016,683:318-328.
[9] Asahi R,Morikawa T,Ohwaki T,et al.Visible-light photocatalysis in nitrogen-doped titanium oxides[J].Science,2001,293(5528):269-271.
[10] Fujishima A,Honda K.Electrochemical photolysis of water at a semiconductor electrode[J].Nature,1972,238(5358):37-38.
[11] Cheng H,Huang B,Dai Y.Engineering BiOX (X=Cl,Br,I) nanostructures for highly efficient photocatalytic applications[J].Nanoscale,2014,6(4):2009-2026.
[12] Shi X J,Chen X,Chen X L,et al.PVP assisted hydrothermal synthesis of BiOBr hierarchical nanostructures and high photocatalytic capacity[J].Chem Eng J,2013,222:120-127.
[13] Zhang J,Shi F,Lin J,et al.Self-assembled 3-D architectures of BiOBr as a visible light-driven photocatalyst[J].Cheminform,2008,39(30):2937-2941.
[14] Zhao Y,Tan X,Yu T,et al.SDS-assisted solvothermal synthesis of BiOBr microspheres with highly visible-light photocatalytic activity[J].Materials Letters,2016,164:243-247.
[15] 方俊华,张凯,张伟,等.混合溴源制备BiOBr微球及其可见光催化性能[J].硅酸盐学报,2017,45(4):572-578.
[16] He G H,Liang C J,Ou Y D,et al.Preparation of novel Sb2O3/WO3,photocatalysts and their activities under visible light irradiation[J].Materials Research Bulletin,2013,48(6):2244-2249.
[17] Lamba R,Umar A,Mehta S K,et al.Sb2O3-ZnO nanospindles:A potential material for photocatalytic and sensing applications[J].Ceramics International,2014,41(4):5429-5438.
[18] 方俊华,张凯,张伟,等.Sb2O3/BiOBr复合物的制备及其对RhB的去污作用[J].化工进展,2017,36(3):1140-1146.
[19] Liu D N,He G H,Zhu L,et al.Enhancement of photocatalytic activity of TiO2 nanoparticles by coupling Sb2O3[J].Applied Surface Science,2012,258(20):8055-8060.
[20] Minero C,Mariella G,Maurino V,et al.Photocatalytic transformation of organic compounds in the presence of inorganic anions.1.Hydroxyl-mediated and direct electron-transfer reactions of phenol on a titanium dioxide-fluoride system[J].Langmuir,2000,16(6):2632-2641.
[21] Di J,Xia J,Ge Y,et al.Facile fabrication and enhanced visible light photocatalytic activity of few-layer MoS2 coupled BiOBr microspheres[J].Dalton Transactions,2014,43(41):15429.
[22] Wang W,Huang F,Lin X,et al.Visible-light-responsive photocatalysts xBiOBr-(1-x)BiOI[J].Catalysis Communications,2008,9(1):8-12.
[23] Cui W Q,An W J,Liu L,et al.Synthesis of CdS/BiOBr composite and its enhanced photocatalytic degradation for Rhodamine B[J].Applied Surface Science,2014,319:298-305.
[24] 李元昊,丁忠浩,陶小明,等.油田氨氮废水的纳米TiO2光催化处理[J].湖北农业科学,2013,52(21):5186-5188.