利用浸渍水热法将 Ni 负载到 BiOBr 载体上,制备了新型的 Ni/BiOBr 复合光催化剂,考察了水热反应温度和时间对制备催化剂的影响。同时采用XRD、BET、UV-Vis紫外-可见光谱等手段对样品进行了表征,研究了 Ni/BiOBr 在可见光照射下的光催化活性。结果表明,在水热反应温度为160℃,水热反应时间为8h 的条件下,制备的 Ni/BiOBr 纳米材料具有很好的光催化活性,当 Ni 负载到 BiOBr 上时,Ni/BiOBr 在可见光区的吸收带边发生红移,光催化实验表明,在可见光下(λ>420nm)可以有效降解罗丹明B,降解率高达97%,Ni/BiOBr 的晶型结构受反应条件的影响,它的禁带宽度为2.62eV。
Using dipping hydrothermal method make Ni loading to BiOBr carrier,prepared new type Ni/BiOBr composite photocatalyst,the effect of the hydrothermal condition of different reaction time and temperature on the catalyst which prepared was studied,and using XRD,BET,UV-Vis to evaluate the samples,studied photo-catalytic activity of Ni/BiOBr under visible light irradiation.The results show that,in the hydrothermal reac-tion temperature is 160℃,hydrothermal reaction time was 8h conditions,the nanomaterials prepared of Ni/BiOBr having good photocatalytic activity,when Ni loading to BiOBr carrier,Ni/BiOBr has red shift in the visi-ble region of the absorption band edge,photocatalytic experiments show that rhodamine B under visible light (λ>420nm)can be effectively degradated,the degradation rate of up to 97%,the crystal structure of Ni/BiOBr affected by the reaction conditions,its band gap was 2.62eV.
参考文献
| [1] | Zhang, L.;Cao, X.-F.;Chen, X.-T.;Xue, Z.-L. .BiOBr hierarchical microspheres: Microwave-assisted solvothermal synthesis, strong adsorption and excellent photocatalytic properties[J].Journal of Colloid and Interface Science,2011(2):630-636. |
| [2] | Chen Yijun;Wen Ming;Wu Qingsheng .Stepwise blosso-ming of BiOBr nanoplate-assembled microflowers and their visible-light photocatalytic activities[J].Crystal Engineering Communications,2011,13:3035-3039. |
| [3] | Zhang X;Ai ZH;Jia FL;Zhang LZ .Generalized one-pot synthesis, characterization, and photocatalytic activity of hierarchical BiOX (X = Cl, Br, I) nanoplate microspheres[J].The journal of physical chemistry, C. Nanomaterials and interfaces,2008(3):747-753. |
| [4] | Jiang Zheng;Yang Fan;Yang Guidong et al.The hydro-thermal synthesis of BiOBr flakes for visible-light-respon-sive photocatalytic degradation of methyl orange[J].Jour-nal of Photochemistry and Photobiology A:Chemistry,2010,212:8-13. |
| [5] | Xia Jiexiang .Design,synthesis and photocatalytic activity of bismuth-based photocatalysts with ionic liquids[D].镇江:江苏大学,2011. |
| [6] | 魏平玉,杨青林,郭林.卤氧化铋化合物光催化剂[J].化学进展,2009(09):1734-1741. |
| [7] | 江元,李越湘,彭绍琴,江风益.烘干温度对氮掺杂二氧化钛光催化剂性能的影响[J].功能材料,2010(07):1140-1143. |
| [8] | Wang W D;Huang F Q;Lin X P et al.Visibie-light-re-sponsive photocatalysts xBiOBr-(1-x)BiOI[J].Catal Coxnmun,2008,9:8-12. |
| [9] | An H Z;Du Y;Wang T M et al.Photocatalystic proper-ties of BIOX(X=CI,Br and I)[J].Rare Metals,2008,27:243-250. |
| [10] | Xia, J.;Yin, S.;Li, H.;Xu, H.;Xu, L.;Xu, Y. .Improved visible light photocatalytic activity of sphere-like BiOBr hollow and porous structures synthesized via a reactable ionic liquid[J].Dalton transactions: An international journal of inorganic chemistry,2011(19):5249-5258. |
| [11] | Zhang, L.;Cao, X.-F.;Chen, X.-T.;Xue, Z.-L. .BiOBr hierarchical microspheres: Microwave-assisted solvothermal synthesis, strong adsorption and excellent photocatalytic properties[J].Journal of Colloid and Interface Science,2011(2):630-636. |
| [12] | ZHIHUI Al;WINGKEI HO;SHUNCHENG LEE .Efficient Photocatalytic Removal of NO in Indoor Air with Hierarchical Bismuth Oxybromide Nanoplate Microspheres under Visible Light[J].Environmental Science & Technology: ES&T,2009(11):4143-4150. |
| [13] | Xiao Xin .Synthesis,characterization and visible-light photocatalytic activity of bismuth oxide iodides hierar-chical micro/nano-architecture[D].广州:华南工业大学,2011. |
| [14] | 余长林,操芳芳,舒庆,包玉龙,谢志鹏,YU JimmyC,杨凯.Ag/BiOX （X=Cl,Br,I）复合光催化剂的制备、表征及其光催化性能[J].物理化学学报,2012(03):647-653. |
| [15] | Fan Caimei;Wang Yan;Li Shuangzhi et al.A BiOBr/BiOCl composite light catalyst preparation and applica-tion method[P].China:CN201110020036.2,2011-05-25. |
| [16] | Lin Haili;Cao Jing;Luo Bangde et al.New type of Ag-Br/BiOBr light catalyst deposition-precipitation prepara-tion,activity and mechanism[J].Chinese Science Bulle-tin,2012,57(15):1309-1316. |
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