采用溶胶-凝胶法合成具有异质结结构BiOI/BiVO4,以罗丹明B为模型污染物,考察了BiOI/BiVO4的光催化活性,并采用XRD、SEM、FT-IR等进行了表征.结果表明,BiOI/BiVO4具有典型的异质结结构,具有抑制电子-空穴再复合、有效促进光生载流子分离的特点,BiOI的引入没有破坏BiVO4颗粒的晶体结构,仍为单斜相主体物相结构,而是增强了催化剂表面的活性位点,提高光电子的迁移速率.相比于单体钒酸铋,复合后的材料光谱响应范围更宽,同时,复合催化剂比单体钒酸铋的催化活性和稳定性更好,在BiOI的摩尔分数为20％时,复合光催化材料的催化活性最佳,实验条件下罗丹明B降解率为95.7％.
参考文献
| [1] | Akihiko Kudo;Hideki Kato;Seira Nakagawa.Water Splitting into H_2 and O_2 on New Sr_2M_2O_7 (M = Nb and Ta) Photocatalysts with Layered Perovskite Structures: Factors Affecting the Photocatalytic Activity[J].The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical,20003(3):571-575. |
| [2] | Hiromi Yamashita;Masaru Harada;Junko Misaka;Masato Takeuchi;Keita Ikeue;Maskazu Anpo.Degradation of propanol diluted in water under visible light irradiation using metal ion-implanted titanium dioxide photocatalysts[J].Journal of Photochemistry and Photobiology, A. Chemistry,20021/3(1/3):257-261. |
| [3] | Xiangzhong Li;Chuncheng Chen;Jincai Zhao.Mechanism of Photodecomposition of H_2O_2 on TiO_2 Surfaces under Visible Light Irradiation[J].Langmuir: The ACS Journal of Surfaces and Colloids,200113(13):4118-4122. |
| [4] | Lisha Zhang;Huanli Wang;Zhigang Chen.Bi2WO6 micro/nano-structures: Synthesis, modifications and visible-light-driven photocatalytic applications[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,20111/2(1/2):1-13. |
| [5] | Wei eng Yao;Xiao Hong Xu;Hong Wang;Jing Tao Zhou;Nue Na Yang;Yin Zhang;Bai Biao Huang.Photocatalytic property of perovskite bismuth titanate[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,20042(2):109-116. |
| [6] | Gotic M;Music S;Ivanda M;Soufek M;Popovic S.Synthesis and characterisation of bismuth(III) vanadate[J].Journal of Molecular Structure,20050(0):535-540. |
| [7] | Long M;Cai WM;Cai J;Zhou BX;Chai XY;Wu YH.Efficient photocatalytic degradation of phenol over Co3O4/BiVO4 composite under visible light irradiation[J].The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical,200641(41):20211-20216. |
| [8] | Yu H;Chen S;Quan X;Zhao H;Zhang Y.Fabrication of a TiO2-BOD heterojunction and its application as a photocatalyst for the simultaneous oxidation of an azo dye and reduction of Cr(VI)[J].Environmental Science & Technology: ES&T,200810(10):3791-3796. |
| [9] | Guan, M.-L.;Ma, D.-K.;Hu, S.-W.;Chen, Y.-J.;Huang, S.-M..From hollow olive-shaped BiVO4 to n-p core-shell BiVO 4@Bi2O3 microspheres: Controlled synthesis and enhanced visible-light-responsive photocatalytic properties[J].Inorganic Chemistry: A Research Journal that Includes Bioinorganic, Catalytic, Organometallic, Solid-State, and Synthetic Chemistry and Reaction Dynamics,20113(3):800-805. |
| [10] | Zhiqiao He;Yuanqiao Shi;Chao Gao.BiOCl/BiVO4 p-n Heterojunction with Enhanced Photocatalytic Activity under Visible-Light Irradiation[J].The journal of physical chemistry, C. Nanomaterials and interfaces,20141(1):389-398. |
| [11] | F. P. Cao;C. H. Ding;K. C. Liu;B. Y. Kang;W. M. Liu.Preeminent visible-light photocatalytic activity over BiOBr-BiVO_4 heterojunctions[J].Crystal Research and Technology: Journal of Experimental and Industrial Crystallography,201412(12):933-938. |
| [12] | 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,20083(3):747-753. |
| [13] | Michel, C.R.;Contreras, N.L.L.;Martínez-Preciado, A.H..Gas sensing properties of nanostructured bismuth oxychloride[J].Sensors and Actuators, B. Chemical,20111(1):271-277. |
| [14] | LIXIA YANG;SHENGLIAN LUO;YUE LI.High Efficient Photocatalytic Degradation of p-Nitrophenol on a Unique Cu2O/TiO2 p-n Heterojunction Network Catalyst[J].Environmental Science & Technology: ES&T,201019(19):7641-7646. |
| [15] | Shouning Chai;Guohua Zhao;Ya-nan Zhang.Selective Photoelectrocatalytic Degradation of Recalcitrant Contaminant Driven by an n-P Heterojunction Nanoelectrode with Molecular Recognition Ability[J].Environmental Science & Technology: ES&T,201218(18):10182-10190. |
| [16] | Gaopeng Dai;Jiaguo Yu;Gang Liu.Synthesis and Enhanced Visible-Light Photoelectrocatalytic Activity of p-n Junction BiOI/TiO2 Nanotube Arrays[J].The journal of physical chemistry, C. Nanomaterials and interfaces,201115(15):7339-7346. |
| [17] | Jincheng Liu;Hongwei Bai;Yinjie Wang;Zhaoyang Liu;Xiwang Zhang;Darren Delai Sun.Self-Assembling TiO_2 Nanorods on Large Graphene Oxide Sheets at a Two-Phase Interface and Their Anti-Recombination in Photocatalytic Applications[J].Advanced functional materials,201023(23):4175-4181. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%