铁酸铋可见光催化过一硫酸盐去除金橙Ⅱ
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摘要
采用共沉淀法制备新型可见光催化剂铁酸铋,采用X射线衍射、扫描电子显微镜、FTIR对其进行表征,并研究铁酸铋激活过一硫酸盐(PMS)去除金橙Ⅱ的影响因素与金橙Ⅱ的降解规律。实验结果表明:初始pH值越低,金橙Ⅱ降解速率越高;随PMS浓度的增加,金橙Ⅱ去除率先增大后降低;随着铁酸铋用量增加,金橙Ⅱ去除率增大,当铁酸铋用量超过0.2g时,去除率趋于恒定;金橙Ⅱ初始浓度增加,去除率降低,但随时间增加,最终去除效果仍趋于一致;当金橙Ⅱ浓度为10 mg·L~(-1),PMS浓度为0.3 mmol·L~(-1),铁酸铋用量为0.2 g,反应时间为70 min时,金橙Ⅱ去除率可达到99.58%;金橙Ⅱ稳定降解时,符合拟一级动力学方程。
The visible light photocatalyst BiFeO_3 was prepared by co-precipitation method and characterized by XRD,SEM and FTIR.The factors affecting removal of orange Ⅱ by BiFeO_3 activated peroxymonosulfate and degradation law of orange Ⅱ were studied.The experimental results show that the degradation rate of orange Ⅱ increases gradually with the decrease of the initial pH value.The removal rate first increases and then decreases with increasing PMScontent.The removal rate of orange Ⅱ increases with increasing BiFeO_(3.)When the dosage of BiFeO_3 more than 0.2 g,the removal rate tends to be constant.With the initial concentration of orange Ⅱ increases,the removal rate decreases.But the removal efficiencies will tend to convergence with the increase of reaction time.When the concentration of orange Ⅱ is 10 mg·L~(-1),the concentration of PMS is 0.3 mmol·L~(-1) and the addition of BiFeO_3 is 0.2 g,the removal rate of orange Ⅱ can reach 99.58%after reaction for 70 min.The stable degradation of orange Ⅱ complies with the quasi-first-order kinetic equation.
The visible light photocatalyst BiFeO_3 was prepared by co-precipitation method and characterized by XRD,SEM and FTIR.The factors affecting removal of orange Ⅱ by BiFeO_3 activated peroxymonosulfate and degradation law of orange Ⅱ were studied.The experimental results show that the degradation rate of orange Ⅱ increases gradually with the decrease of the initial pH value.The removal rate first increases and then decreases with increasing PMScontent.The removal rate of orange Ⅱ increases with increasing BiFeO_(3.)When the dosage of BiFeO_3 more than 0.2 g,the removal rate tends to be constant.With the initial concentration of orange Ⅱ increases,the removal rate decreases.But the removal efficiencies will tend to convergence with the increase of reaction time.When the concentration of orange Ⅱ is 10 mg·L~(-1),the concentration of PMS is 0.3 mmol·L~(-1) and the addition of BiFeO_3 is 0.2 g,the removal rate of orange Ⅱ can reach 99.58%after reaction for 70 min.The stable degradation of orange Ⅱ complies with the quasi-first-order kinetic equation.
引文
[1]李庆云,韩洪晶.偶氮类染料废水处理技术的研究进展[J].当代化工,2016,45(9):2217-2220,2223.
[2]任南琪,周显娇,郭婉茜,等.染料废水处理技术研究进展[J].化工学报,2013,64(1):84-94.
[3]张旋,王启山.高级氧化技术在废水处理中的应用[J].水处理技术,2009,35(3):18-22.
[4]Aditya R,Souhail R A,Dionysios D D.Sulfate radical-based ferrous–peroxymonosulfate oxidative system for PCBs removal in aqueous and sediment systems[J].Appl Catal B:Environ,2009,85(3-4):171-179.
[5]Lin K Y A,Lin J T,Jochems A P.Oxidation of amaranth dye by persulfate and peroxymonosulfate activated by ferrocene[J].J Chem Technol Biotechnol,2017,92(1):163-172.
[6]曹枫,唐培松,陈海锋,等.溶胶-凝胶法制备铁酸铋及其可见光催化性能[J].稀有金属材料与工程,2010,39(S2):422-425.
[7]Gao F,Chen X Y,Yin K B,Dong S,et al.Visible-light photocatalytic properties of weak magnetic BiFeO3 nanoparticles[J].Adv Mater,2007,19(2):2889-2892.
[8]朱培娟,赵雅萍.溴化氧铋(BiOBr)光催化降解橙黄Ⅱ的研究[J].安徽大学学报:自然科学版,2014,38(2):80-89.
[9]Xu Z J,Lu J H,Liu Q,et al.Decolorization of acid orange Ⅱ dye by peroxymonosulfate activated with magnetic Fe3O4@C/Co nanocomposites[J].RSC Adv,2015,5(94):76862-76874.
[10]Kumar M M,Palkar V R,Srinivas K,et al.Ferroelectricity in a pure BiFeO3 ceramic[J].Appl Phys Lett,2000,76(19):2764-2766.
[11]刘亚子,何宇翔,杨绍贵,等.BiFeO3可见光催化降解甲基紫[J].化工环保,2013,33(6):556-559.
[12]Kim J K,Kim S S,Kim W J.Sol–gel synthesis and properties of multiferroic BiFeO3[J].Mater Lett,2005,59(29-30):4006-4009.
[13]邹云玲,晏杲,谢耀,等.溶剂热法制备板钛矿型TiO2[J].化学研究与应用,2018,30(1):80-87.
[14]杨波,张永丽,刘杨,等.BiOI负载Fe3O4 光催化激活过硫酸盐降解金橙Ⅱ[J].工业水处理,2017,37(9):55-59.
[15]刘咏,邹文慧,廖洋,等.Ce3+电催化降解甲基橙模拟废水的研究[J].中国稀土学报,2011,29(1):105-111.
[16]Rastogi A,Al-Abed S R,Dionysiou D D,Sulfate radical-based ferrous-peroxymonosulfate oxidative system for PCBs degradation in aqueous and sediment systems[J].Appl Catal B:Environ,2009,85(3-4):171-179.
[17]Guan Y H,Ma J,Li X C,et al.Influence of pH on the formation of sulfate and hydroxyl radicals in the UV/peroxymonosulfate system[J].Environ Sci Technol,2011,45(21):9308-9314.
[18]刘丽艳,孙至柔,叶文博,等.超声辅助Fe3O4活化过一硫酸盐降解酸性红B[J].化工进展,2016,35(11):3663-3668.
[19]Nie G,Huang J,Hu Y Z,et al.Heterogeneous catalytic activation of peroxymonosulfate for efficient degradation of organic pollutants by magnetic Cu0 /Fe3O4 submicron composites[J].Chin J Catal,2017,38(2):227-239.
[2]任南琪,周显娇,郭婉茜,等.染料废水处理技术研究进展[J].化工学报,2013,64(1):84-94.
[3]张旋,王启山.高级氧化技术在废水处理中的应用[J].水处理技术,2009,35(3):18-22.
[4]Aditya R,Souhail R A,Dionysios D D.Sulfate radical-based ferrous–peroxymonosulfate oxidative system for PCBs removal in aqueous and sediment systems[J].Appl Catal B:Environ,2009,85(3-4):171-179.
[5]Lin K Y A,Lin J T,Jochems A P.Oxidation of amaranth dye by persulfate and peroxymonosulfate activated by ferrocene[J].J Chem Technol Biotechnol,2017,92(1):163-172.
[6]曹枫,唐培松,陈海锋,等.溶胶-凝胶法制备铁酸铋及其可见光催化性能[J].稀有金属材料与工程,2010,39(S2):422-425.
[7]Gao F,Chen X Y,Yin K B,Dong S,et al.Visible-light photocatalytic properties of weak magnetic BiFeO3 nanoparticles[J].Adv Mater,2007,19(2):2889-2892.
[8]朱培娟,赵雅萍.溴化氧铋(BiOBr)光催化降解橙黄Ⅱ的研究[J].安徽大学学报:自然科学版,2014,38(2):80-89.
[9]Xu Z J,Lu J H,Liu Q,et al.Decolorization of acid orange Ⅱ dye by peroxymonosulfate activated with magnetic Fe3O4@C/Co nanocomposites[J].RSC Adv,2015,5(94):76862-76874.
[10]Kumar M M,Palkar V R,Srinivas K,et al.Ferroelectricity in a pure BiFeO3 ceramic[J].Appl Phys Lett,2000,76(19):2764-2766.
[11]刘亚子,何宇翔,杨绍贵,等.BiFeO3可见光催化降解甲基紫[J].化工环保,2013,33(6):556-559.
[12]Kim J K,Kim S S,Kim W J.Sol–gel synthesis and properties of multiferroic BiFeO3[J].Mater Lett,2005,59(29-30):4006-4009.
[13]邹云玲,晏杲,谢耀,等.溶剂热法制备板钛矿型TiO2[J].化学研究与应用,2018,30(1):80-87.
[14]杨波,张永丽,刘杨,等.BiOI负载Fe3O4 光催化激活过硫酸盐降解金橙Ⅱ[J].工业水处理,2017,37(9):55-59.
[15]刘咏,邹文慧,廖洋,等.Ce3+电催化降解甲基橙模拟废水的研究[J].中国稀土学报,2011,29(1):105-111.
[16]Rastogi A,Al-Abed S R,Dionysiou D D,Sulfate radical-based ferrous-peroxymonosulfate oxidative system for PCBs degradation in aqueous and sediment systems[J].Appl Catal B:Environ,2009,85(3-4):171-179.
[17]Guan Y H,Ma J,Li X C,et al.Influence of pH on the formation of sulfate and hydroxyl radicals in the UV/peroxymonosulfate system[J].Environ Sci Technol,2011,45(21):9308-9314.
[18]刘丽艳,孙至柔,叶文博,等.超声辅助Fe3O4活化过一硫酸盐降解酸性红B[J].化工进展,2016,35(11):3663-3668.
[19]Nie G,Huang J,Hu Y Z,et al.Heterogeneous catalytic activation of peroxymonosulfate for efficient degradation of organic pollutants by magnetic Cu0 /Fe3O4 submicron composites[J].Chin J Catal,2017,38(2):227-239.