以H2WO4、NaOH和Bi(NO3)3·5H2O为原料,通过调节不同pH值和添加表面活性剂CTAB,采用水热法制备出不同形貌的钨酸铋粉体.利用XRD、SEM、UV-Vis对Bi2WO6粉体进行表征.结果表明:pH值对钨酸铋的物相、形貌和光催化和电催化性能均有较大影响;当pH=9.5得到的Bi2WO6粉体结晶度高,禁带宽度为2.61 eV,电催化的可逆性较好,氧化还原电位差仅为0.109V,光催化活性较高;400W金卤灯40 min照射下,罗丹明B的降解率达到93.96％.
参考文献
| [1] | 张丽莎,王焕丽,李世杰,柳建设.Bi2WO6基纳米光催化剂的研究进展[J].现代化工,2012(09):36-39. |
| [2] | Fumiaki Amano;Kohei Nogami;Ryu Abe .Preparation and Characterization of Bismuth Tungstate Polycrystalline Flake-Ball Particles for Photocatalytic Reactions[J].The journal of physical chemistry, C. Nanomaterials and interfaces,2008(25):9320-9326. |
| [3] | Fu HB;Zhang LW;Yao WQ;Zhu YF .Photocatalytic properties of nanosized Bi2WO6 catalysts synthesized via a hydrothermal process[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,2006(1/2):100-110. |
| [4] | Michael R. Hoffmann;Scot T. Martin;Wonyong Choi;Detlef W. Bahnemann .Environmental Applications of Semiconductor Photocatalysis[J].Chemical Reviews,1995(1):69-96. |
| [5] | Xinchen Wang;Jimmy C.Yu;Chunman Ho;Yidong Hou;Xianzhi Fu .Photocatalytic Activity of a Hierarchically Macro/ Mesoporous Titania[J].Langmuir: The ACS Journal of Surfaces and Colloids,2005(6):2552-2559. |
| [6] | Huidong Xie;Dezhong Shen;Xiaoqing Wang;Guangqiu Shen .Microwave hydrothermal synthesis and visible-light photocatalytic activity of Bi2WO6 nanoplates[J].Materials Chemistry and Physics,2007(2/3):334-339. |
| [7] | Zhang, C;Zhu, YF .Synthesis of square Bi2WO6 nanoplates as high-activity visible-light-driven photocatalysts[J].Chemistry of Materials,2005(13):3537-3545. |
| [8] | Wu J;Duan F;Zheng Y;Xie Y .Synthesis of Bi2WO6 nanoplate-built hierarchical nest-like structures with visible-light-induced photocatalytic activity[J].The journal of physical chemistry, C. Nanomaterials and interfaces,2007(34):12866-12871. |
| [9] | Dai, XJ;Luo, YS;Zhang, WD;Fu, SY .Facile hydrothermal synthesis and photocatalytic activity of bismuth tungstate hierarchical hollow spheres with an ultrahigh surface area[J].Dalton transactions: An international journal of inorganic chemistry,2010(14):3426-3432. |
| [10] | 朱慧 .Bi<,2>WO<,6>的制备及光催化降解罗丹明B的研究[D].天津大学,2008. |
| [11] | 郑玉芹,谈国强,博海洋,夏傲,任慧君.pH值对Bi2WO6粉体的微波水热法合成及光催化性能的影响[J].硅酸盐学报,2011(03):481-485. |
| [12] | 冯妍,吴青松,张国英,孙亚秋.可见光响应型Bi2WO6光催化剂[J].化学进展,2012(11):2124-2131. |
| [13] | 章剑,章燕,沈玉华,李村,谢安建.花状结构Bi2WO6多孔微球：组装及光催化性能[J].无机化学学报,2012(04):739-744. |
| [14] | Fu, HB;Zhang, SC;Xu, TG;Zhu, YF;Chen, JM .Photocatalytic degradation of RhB by fluorinated Bi2WO6 and distributions of the intermediate products[J].Environmental Science & Technology,2008(6):2085-2091. |
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%