片状Bi_2O_3的制备及其光催化性能
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摘要
利用化学沉淀法,分别以Bi(NO_3)_3·5H_2O为铋源、稀HNO_3为溶剂和HTMA为沉淀剂,制备出片状Bi_2O_3光催化剂.利用SEM、XRD和BET分别对制备的Bi_2O_3形貌、厚度、晶型和比表面积进行表征,并借助紫外可见漫反射和光化学反应仪对材料的光催化性能进行测试.结果表明:制备的片状Bi_2O_3光催化剂形貌较好,厚度均一,a-Bi_2O_3晶型,对可见光的吸收较强,表现出较好的光催化性能.在模拟可见光300W下,3.0h后Bi_2O_3光催化剂对四环素溶液的降解率可以达到82.6%,远远高于市售纳米Bi_2O_3颗粒.
Bi_2O_3 photocatalyst with plate-like morphology was successfully prepared by the method of chemical precipitation which using Bi(NO_3)_3·5 H_2O as the source of bismuth, HNO_3 as solvent and HTMA as precipitants, respectively. The morphology, thickness,crystal form and specific surface area of the as-prepared Bi_2O_3 were characterized by SEM, XRD and BET respectively. Furthermore,the photocatalytic performance of the materials was tested by UV-Vis diffuse reflection and photochemical reaction apparatus. The results showed that the obtained Bi_2O_3 photocatalyst with plate-like morphology has good morphology, uniform thickness, a-Bi_2O_3,stronger absorbent for visible-light and exhibits good photocatalytic property. Under the simulated visible light of 300 W, the degradation rate of tetracycline wastewater can be reached to 82.6 % after 3.0 h, which is much higher than that of commercially nanoparticles Bi_2O_3.
Bi_2O_3 photocatalyst with plate-like morphology was successfully prepared by the method of chemical precipitation which using Bi(NO_3)_3·5 H_2O as the source of bismuth, HNO_3 as solvent and HTMA as precipitants, respectively. The morphology, thickness,crystal form and specific surface area of the as-prepared Bi_2O_3 were characterized by SEM, XRD and BET respectively. Furthermore,the photocatalytic performance of the materials was tested by UV-Vis diffuse reflection and photochemical reaction apparatus. The results showed that the obtained Bi_2O_3 photocatalyst with plate-like morphology has good morphology, uniform thickness, a-Bi_2O_3,stronger absorbent for visible-light and exhibits good photocatalytic property. Under the simulated visible light of 300 W, the degradation rate of tetracycline wastewater can be reached to 82.6 % after 3.0 h, which is much higher than that of commercially nanoparticles Bi_2O_3.
引文
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[22] Hu Y, Li D, Sun F, et al. Temperature-induced phase changes in bismuth oxides and efficient photodegradation of phenol and pchlorophenol[J]. Journal of Hazardous Materials, 2016,301:362-370.
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[24] Chen R, Shell Z R, Wang H, et al. Fabrication of mesh-like bismuth oxide single crystalline nanoflakes and their visible light photocatalytic activity[J]. Journal of Alloys&Compounds, 2011,509(5):2588-2596.
[25]武志富,沈玉华,谢安建.微波加热合成多孔花状结构的纳米a-Bi203[J].无机化学学报,2010,26(10):1880-1884.Wu Z F, Shen Y H, Xie A J. Synthesis of porous flowerlike nanoα-Bi2O3 by microwave dielectric heating[J]. Chinese Journal of Inorganic Chemistry, 2010,26(10):1880-1884.
[26]马占营,姚秉华,何仰清,等.网状结构Bi2O3光催化剂的合成及其光催化性能[J].功能材料,2013,44(4):507-511.Ma Z Y, Yao B H, He Y Q, et al. Synthesis and photocatalytic activity of reticular Bi2O3 photocatalysts[J]. Journal of Functional Materials,2013,44(4):507-511.
[27]周慧,王磊,沈明,等.片状氧化铋的软模板法制备及其光催化降解性能[J].扬州大学学报(自然科学版),2014,17(4):30-34.Zhou H, Wang L, Shen M, et al. Preparation of bismuth oxide nanoplates with a soft template and their photocatalytic property[J].Journal of Yangzhou University(Natural Science Edition), 2014,17(4):30-34.
[28]冯刚,周慧,沈明,等.类片状纳米氧化铋的制备及其光催化性能研究[J].西北师范大学学报(自然科学版),2015,51(5):64-69.Feng G, Zhou H, Shen M, et al. Preparation and photocatalytic properties of sheet-like bismuth oxide nanomaterials[J]. Journal of Northwest Normal University(Natural Science), 2015,51(5):64-69.
[29] Chen J, Zong S,Liu Q, et al. Cerium sulfate microdisks prepared by a solvothermal method and their conversion to ceria microdisks[J].Powder Technology, 2010,197(1):136-139.
[30] Ai Z, Huang Y, Lee S, et al. Monoclinicα-Bi2O3 photocatalyst for efficient removal of gaseous NO and HCHO under visible light irradiation[J]. Journal of Alloys&Compounds,2011,509(5):2044-2049.
[31] Li B, Shao L, Zang B, et al. Understanding size-dependent properties of BiOCl nanosheets and exploring more catalysis[J]. Journal of Colloid&Interface Science,2017,505(1):653-663.
[32] Fu H, Yao W, Zhang L, et al. The enhanced photoactivity of nanosized Bi2WO6 catalyst for the degradation of 4-chlorophenol[J]. Materials Research Bulletin, 2008,43(10):2617-2625.
[33] Chen R, Shen Z R, Wang H, et al. Fabrication of mesh-like bismuth oxide single crystalline nanoflakes and their visible light photocatalytic activity[J]. Journal of Alloys&Compounds, 2011,509(5):25 88-2596.
[34] Jeffrey J Werner, William A Arnold, Kristopher McNeill. Water hardness as a photochemical parameter:Tetracycline photolysis as a function of calcium concentration, magnesium concentration, and pH[J]. Environmental Science&Technology, 2006,40(23):7236-7241.
[35] Castillo C,Criado S,Diaz M, et al. Riboflavin as a sensitiser in the photodegradation of tetracyclines, Kinetics, mechanism and microbiological implications[J]. Dyes&Pigments, 2007,72(2):178-184.
[2] Maeng S K, Cho K, Jeong B, et al. Substrate-immobilized electrospun TiO2, nanofibers for photocatalytic degradation of pharmaceuticals:The effects of pH and dissolved organic matter characteristics[J].Water Research, 2015,86:25-34.
[3]樊佳敏,王磊,刘婷婷,等.普伐他汀的光催化降解性能及机理研究[J].中国环境科学,2018,38(6):2157-2166.Fan J M, Wang L, Liu T T, et al. Performance and mechanism ofphotocatalytic degradation of Pravastatin[J]. China Environmental Science,2018,38(6):2157-2166.
[4] Wang P,Cao M,Ao Y,et al. Investigation on Ce-doped TiO2-coated BDD composite electrode with high photoelectro catalytic activity under visible light irradiation[J]. Electrochemistry Communications,2011,13(12):1423-1426.
[5] Zhong X, Dai Z, Qin F, et al. Ag-decorated Bi2O3 Nanospheres with enhanced visible-light-driven photocatalytic activities for water treatment[J]. Rsc Advances, 2015,5(85):69312-69318.
[6]邓一荣,赵璐,苏雅玲,等.TiO2纳米管对水源水中MC-LR的光催化降解[J].中国环境科学,2018,38(7):2498-2504.Deng Y R, Zhao L, Su Y L, et al. Photocatalytic degradation of microcystins-LR in source water using TiO2 nano tubes[J]. China Environmental Science, 2018,38(7):2498-2504.
[7] Priya B, Raizada P,Singh N, et al. Adsorptional photocatalytic mineralization of oxytetracycline and ampicillin antibiotics using Bi2O3/BiOCl supported on graphene sand composite and chitosan.[J].J. Colloid Interface Sci., 2016,479:271-283.
[8] Brinker C J, Lu Y, Sellinger A, et al. Evaporation-induced selfassembly:nanostructures made easy[J]. Advanced Materials, 1999,11:579-585.
[9] Devoret M H, Esteve D, Urbina C. Single-electron transfer in metallic nanostructures[J]. Nature, 1992,360(6404):547-553.
[10] Parthasarathy R V, Martin C R. Synthesis of polymeric microcapsule arrays and their use for enzyme immobilization[J]. Nature, 1994,369(6478):298.
[11]吴朝晖,甘小燕,杜湘军,等.纳米晶NiO薄膜的电化学沉积及其光学性能研究[J].功能材料,2017,48(4):4105-4109.Wu Z H, Gan X Y, Du X J, et al. Electrochemical deposition of nanocrystalline NiO thin films and their optical propertie[J]. Journal of Functional Materials, 2017,48(4):4105-4109.
[12] Lin X, Guan Q F, Liu T T,et al. Controllable synthesis and photocatalytic activity of Bi4Ti3O12 particles with different morphologies[J]. Acta Physico-Chimica Sinica, 2013,29(2):411-417(7).
[13]符馨元,黄剑锋,曹丽云,等.不同形貌氢氧化镧纳米晶的光催化性能[J].硅酸盐学报,2013,41(8):1158-1162.Fu X Y, Huang J F, Cao L Y, et al. Photocatalytic properties of La(OH)3 nanoparticles with different morphologies[J]. Journal of the Chinese Ceramic Society, 2013,41(8):1158-1162.
[14] Omomo Y, Sasaki T, Wang L, et al. Redoxable nanosheet crystallites of MnO2 derived via delamination of a layered manganese oxide[J].Cheminform, 2003,125(12):3568-75.
[15] Shuk P, Wiemhofer H D, Guth U, et al. Oxide ion conducting solid electrolytes based on Bi-O3[J]. Solid State Ionics, 1996,89:179-196.
[16] Cheng H, Huang B, Lu J, et al. Synergistic effect of crystal and electronic structures on the visible-light-driven photocatalytic performances of Bi(2)O(3)polymorphs[J]. Physical Chemistry Chemical Physics,2010,12(47):15468-75.
[17] Harriman A, Thomas J M, Zhou W, et al. A new family of photocatalysts based on Bi2O3[J]. Journal of Solid State Chemistry,1988,72(1):126-130.
[18]陈萃,夏纪勇,唐朝波,等.低温氧化法制备Bi2O3粉体新工艺研究[J].材料导报,2008,22(z2):124-130.Chen C, Xia J Y, Tang Z B, et al. Studies on the prepatation of Bi2O3powers by the oxidation process at low temperature[J]. Materials Review, 2008,22(z2):124-130.
[19] Liu Y Y, Wang Z Y, Huang B B, et al. Preparation, electronic structure,and photocatalytic properties of Bi 202C 3nanosheet[J]. Applied Surface Science, 2010,257(1):172-175.
[20]刘果,卢圆圆,张静,等.沉淀法制备Bi2O3的晶相转变过程及其光催化性能[J].物理化学学报,2016,32(5):1247-1256.Liu G, Lu Y Y, Zhang J et al. Phase transformation and photocatalytic properties of Bi2O3 prepared using a precipitation method[J]. Acta Physico-Chimica Sinica, 2016,32(5):1247-1256.
[21]粱英,刘华俊,鲁俊,等.水热法制备Bi2O3纳米片及其电化学性能的研究[J].化学学报,2010,68(19):1977-1980.Liang Y,Liu H J,Lu J et al. Hydrothermal synthesis and electrochemical performance of Bi2O3 nano-sheets[J]. Acta Chimica Sinica, 2010,68(19):1977-1980.
[22] Hu Y, Li D, Sun F, et al. Temperature-induced phase changes in bismuth oxides and efficient photodegradation of phenol and pchlorophenol[J]. Journal of Hazardous Materials, 2016,301:362-370.
[23] Medina J C, Bizarro M, Gomez C L,et al. Sputtered bismuth oxide thin films as a potential photocatalytic material[J]. Catalysis Today,2016,266:144-152.
[24] Chen R, Shell Z R, Wang H, et al. Fabrication of mesh-like bismuth oxide single crystalline nanoflakes and their visible light photocatalytic activity[J]. Journal of Alloys&Compounds, 2011,509(5):2588-2596.
[25]武志富,沈玉华,谢安建.微波加热合成多孔花状结构的纳米a-Bi203[J].无机化学学报,2010,26(10):1880-1884.Wu Z F, Shen Y H, Xie A J. Synthesis of porous flowerlike nanoα-Bi2O3 by microwave dielectric heating[J]. Chinese Journal of Inorganic Chemistry, 2010,26(10):1880-1884.
[26]马占营,姚秉华,何仰清,等.网状结构Bi2O3光催化剂的合成及其光催化性能[J].功能材料,2013,44(4):507-511.Ma Z Y, Yao B H, He Y Q, et al. Synthesis and photocatalytic activity of reticular Bi2O3 photocatalysts[J]. Journal of Functional Materials,2013,44(4):507-511.
[27]周慧,王磊,沈明,等.片状氧化铋的软模板法制备及其光催化降解性能[J].扬州大学学报(自然科学版),2014,17(4):30-34.Zhou H, Wang L, Shen M, et al. Preparation of bismuth oxide nanoplates with a soft template and their photocatalytic property[J].Journal of Yangzhou University(Natural Science Edition), 2014,17(4):30-34.
[28]冯刚,周慧,沈明,等.类片状纳米氧化铋的制备及其光催化性能研究[J].西北师范大学学报(自然科学版),2015,51(5):64-69.Feng G, Zhou H, Shen M, et al. Preparation and photocatalytic properties of sheet-like bismuth oxide nanomaterials[J]. Journal of Northwest Normal University(Natural Science), 2015,51(5):64-69.
[29] Chen J, Zong S,Liu Q, et al. Cerium sulfate microdisks prepared by a solvothermal method and their conversion to ceria microdisks[J].Powder Technology, 2010,197(1):136-139.
[30] Ai Z, Huang Y, Lee S, et al. Monoclinicα-Bi2O3 photocatalyst for efficient removal of gaseous NO and HCHO under visible light irradiation[J]. Journal of Alloys&Compounds,2011,509(5):2044-2049.
[31] Li B, Shao L, Zang B, et al. Understanding size-dependent properties of BiOCl nanosheets and exploring more catalysis[J]. Journal of Colloid&Interface Science,2017,505(1):653-663.
[32] Fu H, Yao W, Zhang L, et al. The enhanced photoactivity of nanosized Bi2WO6 catalyst for the degradation of 4-chlorophenol[J]. Materials Research Bulletin, 2008,43(10):2617-2625.
[33] Chen R, Shen Z R, Wang H, et al. Fabrication of mesh-like bismuth oxide single crystalline nanoflakes and their visible light photocatalytic activity[J]. Journal of Alloys&Compounds, 2011,509(5):25 88-2596.
[34] Jeffrey J Werner, William A Arnold, Kristopher McNeill. Water hardness as a photochemical parameter:Tetracycline photolysis as a function of calcium concentration, magnesium concentration, and pH[J]. Environmental Science&Technology, 2006,40(23):7236-7241.
[35] Castillo C,Criado S,Diaz M, et al. Riboflavin as a sensitiser in the photodegradation of tetracyclines, Kinetics, mechanism and microbiological implications[J]. Dyes&Pigments, 2007,72(2):178-184.