异质型BiOI/NaBiO<sub>3</sub>光催化剂的合成及其光催化性能

引用本文: 姬磊, 王浩人, 于瑞敏, 姜震, 汪怀远. 异质型BiOI/NaBiO₃光催化剂的合成及其光催化性能[J]. 无机化学学报, 2015, (3): 521-528. doi: 10.11862/CJIC.2015.080 shu

Citation: JI Lei, WANG Hao-Ren, YU Rui-Min, JIANG Zhen, WANG Huai-Yuan. Synthesis of Heterojunction Type BiOI/NaBiO₃ Photocatalyst and Enhanced Photocatalytic Activities[J]. Chinese Journal of Inorganic Chemistry, 2015, (3): 521-528. doi: 10.11862/CJIC.2015.080 shu

异质型BiOI/NaBiO₃光催化剂的合成及其光催化性能

1.
东北石油大学化学化工学院, 石油与天然气化工省高校重点实验室, 大庆 163318
基金项目:
黑龙江省普通高等学校青年学术骨干支持计划(No.1251G002) (No.1251G002)

东北石油大学青年科学基金(No.2012QN114) (No.2012QN114)

黑龙江省普通高校石油与天然气化工重点实验室开放基金(No.HXHG2012-0)资助项目。 (No.HXHG2012-0)

摘要: 根据表面化学蚀刻原理采用加热冷凝回流的方法制备了一系列组成的异质结构BiOI/NaBiO₃光催化剂。利用X射线粉末衍射(XRD)、扫描电子显微镜(SEM)和紫外-可见漫反射光谱(UV-Vis-DRS)等技术对其晶相结构、微观形貌和光吸收性能进行了表征。光催化实验表明, BiOI/NaBiO₃在可见光下可以有效降解罗丹明B(RhB), 当BiOI与NaBiO₃的物质的量分数为一定值时, 异质结构的光催化剂明显优于单一组分的光催化活性。通过加入不同的牺牲剂及荧光实验结果推测了该异质结构材料的光催化机理, 并且分析了其光生载流子的传输方向及光催化过程的活性物种。研究表明, BiOI/NaBiO₃的催化活性增强主要归结为两者之间形成了有效的异质结构, 其内建电场能够促进光生载流子的分离, 同时光生空穴h⁺在光催化降解过程中是主要的活性物种。

关键词:

光催化; BiOI; NaBiO₃;异质结;机理

English

Synthesis of Heterojunction Type BiOI/NaBiO₃ Photocatalyst and Enhanced Photocatalytic Activities

1.
Provincial Key Laboratory of Oil and Gas Chemical Technology, College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing, Heilongjiang 163318, China
Received Date: 30 September 2014
Fund Project:
黑龙江省普通高等学校青年学术骨干支持计划(No.1251G002)

东北石油大学青年科学基金(No.2012QN114)

黑龙江省普通高校石油与天然气化工重点实验室开放基金(No.HXHG2012-0)资助项目。

Abstract: BiOI/NaBiO₃ heterostructure photocatalysts were synthesized using HI as etching agents to react with NaBiO₃ by a heating condensate reflux method according to surface chemical etching principle. Several characterization tools including X-ray powder diffraction (XRD), scanning electron microscope (SEM) and UV-Vis diffuse reflectance spectra (UV-Vis DRS) were employed to study the phase structures, morphologies and optical properties of the as-prepared samples respectively. From the degradation of Rhodamine B(RhB) under visible light irradiation experimental results, we can obtained that the absorption capacity of as-prepared samples were enhanced with increasing the BiOI amounts in the BiOI/NaBiO₃ heterostructures until the BiOI/NaBiO₃ ratio is 79.62%. With increasing BiOI content, the photocatalytic activity enhanced gradually and then decreased. As the BiOI content increase to 17.34%, the highest photocatalytic activity could be achieved, and the RhB almost faded completely with the time increasing to 100 min. The results show that the adsorption ability is only a factor not all to promote the photocatalytic ability. The E_VB of NaBiO₃ and BiOI were calculated to be 2.23 and 2.41 eV and the E_CB of NaBiO₃ and BiOI were -0.23 and 0.46 eV by the UV-Vis DRS method respectively. To evaluate the roles of reactive species during photocatalysis, different scavengers including benzoquinone, isopropyl alcohol and methanol were adopted as the traps for O₂^-, OH and h⁺ for RhB degradation. The results suggesting that h⁺ played major role for RhB degradation. Terephthalic acid photoluminescence (TA-PL) probing test demonstrated that OH could be negligible also. According to the band gap structure of BiOI/NaBiO₃, the effects of scavengers and the PL experimental results, a possible charge separation processes between BiOI and NaBiO₃, and the pathway for the photocatalytic activity enhancement mechanism was proposed. The heterojunction at the interface between p-BiOI and n-NaBiO₃ can efficiently reduce the recombination of photogenerated electron-hole pairs and which accounts for the enhancement of photocatalytic activity. Form the analysis of potential, it is theoretically reasonable that the photocatalytic degradation of RhB could be attributed to the reaction of hole directly rather than OH and O₂^- radicals.

Key words:

photocatalysis;BiOI;NaBiO₃;heterojunction;mechanism

1. [1] Fujishima A, Honda K. Nature, 1972,238:37-38[1] Fujishima A, Honda K. Nature, 1972,238:37-38
2. [2] Carey J H, Lawrenee J, Tosin H M. Bull. Environ. Contam. Toxicol., 1976,16:697-701[2] Carey J H, Lawrenee J, Tosin H M. Bull. Environ. Contam. Toxicol., 1976,16:697-701
3. [3] Frank S N, Bard A J. J. Am. Chem. Soc., 1977,99:4667-4675[3] Frank S N, Bard A J. J. Am. Chem. Soc., 1977,99:4667-4675
4. [4] Pan C S, Zhu Y F. Environ. Sci. Technol., 2010,44:5570 -5574[4] Pan C S, Zhu Y F. Environ. Sci. Technol., 2010,44:5570 -5574
5. [5] Liu Y F, Zhu Y Y, Xu J, et al. Appl. Catal. B: Environ., 2014,142-143:561-567[5] Liu Y F, Zhu Y Y, Xu J, et al. Appl. Catal. B: Environ., 2014,142-143:561-567
6. [6] Yu J Q, Zhang Y, Kudo A. J. Solid State Chem., 2009,182: 223-228[6] Yu J Q, Zhang Y, Kudo A. J. Solid State Chem., 2009,182: 223-228
7. [7] Zhang L S, Wang H L, Chen Z G, et al. Appl. Catal. B: Environ., 2011,106(1/2):1-13[7] Zhang L S, Wang H L, Chen Z G, et al. Appl. Catal. B: Environ., 2011,106(1/2):1-13
8. [8] Huang Y, Ai Z H, Ho W K, et al. J. Phys. Chem. C, 2010, 114(21):6342-6349[8] Huang Y, Ai Z H, Ho W K, et al. J. Phys. Chem. C, 2010, 114(21):6342-6349
9. [9] Wang C Y, Zhang H, Li F, et al. Environ. Sci. Technol., 2010,44(17):6843-6848[9] Wang C Y, Zhang H, Li F, et al. Environ. Sci. Technol., 2010,44(17):6843-6848
10. [10] Chen F, Liu H L. J. Photochem. Photobiol., A, 2010,215(1): 76-80[10] Chen F, Liu H L. J. Photochem. Photobiol., A, 2010,215(1): 76-80
11. [11] LI Er-Jun (李二军), CHEN Lang (陈浪), ZHANG Qiang (章强), et al. Progress in Chemistry (化学进展), 2010,22 (12):2282-2289[11] LI Er-Jun (李二军), CHEN Lang (陈浪), ZHANG Qiang (章强), et al. Progress in Chemistry (化学进展), 2010,22 (12):2282-2289
12. [12] WU Zi-Wei (吴子伟), LÜ Xiao-Meng (吕晓萌), SHEN Jia-Yu (沈佳宇), et al. Chinese J. Inorg. Chem. (无机化学学报), 2014,30(3):492-498[12] WU Zi-Wei (吴子伟), LÜ Xiao-Meng (吕晓萌), SHEN Jia-Yu (沈佳宇), et al. Chinese J. Inorg. Chem. (无机化学学报), 2014,30(3):492-498
13. [13] Kou J, Zhang H, Li Z. Catal. Lett., 2008,122:131-137[13] Kou J, Zhang H, Li Z. Catal. Lett., 2008,122:131-137
14. [14] Chang X F, Ji G, Sui Q. J. Hazard. Mater., 2009,166(2):728 -733[14] Chang X F, Ji G, Sui Q. J. Hazard. Mater., 2009,166(2):728 -733
15. [15] Kako T, Zou Z G. Chem. Mater., 2007,19(2):198-202[15] Kako T, Zou Z G. Chem. Mater., 2007,19(2):198-202
16. [16] Xia J, Yin S, Li H, et al. Langmuir, 2010,27:1200-1206[16] Xia J, Yin S, Li H, et al. Langmuir, 2010,27:1200-1206
17. [17] Zhang X, Ai Z H, Jia F L, et al. J. Phys. Chem. C, 2008,112:747-753[17] Zhang X, Ai Z H, Jia F L, et al. J. Phys. Chem. C, 2008,112:747-753
18. [18] GUI Ming-Sheng (桂明生), WANG Peng-Fei(王鹏飞), YUAN Dong(袁东), et al. Chinese J. Inorg. Chem. (无机化学学报), 2013,29(10):2057-2064[18] GUI Ming-Sheng (桂明生), WANG Peng-Fei(王鹏飞), YUAN Dong(袁东), et al. Chinese J. Inorg. Chem. (无机化学学报), 2013,29(10):2057-2064
19. [19] YU Hong-Tao(于洪涛), QUAN Xie(全燮). Progress in Chemistry (化学进展). 2009,21:406-419[19] YU Hong-Tao(于洪涛), QUAN Xie(全燮). Progress in Chemistry (化学进展). 2009,21:406-419
20. [20] Wang H L, Zhang L S, Chen Z G, et al. Chem. Soc. Rev., 2014,43:6765-6813[20] Wang H L, Zhang L S, Chen Z G, et al. Chem. Soc. Rev., 2014,43:6765-6813
21. [21] Jiang J, Zhang X, Sun P B. J. Phys. Chem. C, 2011,115: 20555-20564[21] Jiang J, Zhang X, Sun P B. J. Phys. Chem. C, 2011,115: 20555-20564
22. [22] Li H Q, Cui Y M, Hong W S. Appl. Surf. Sci., 2013,264: 581-588[22] Li H Q, Cui Y M, Hong W S. Appl. Surf. Sci., 2013,264: 581-588
23. [23] CUI Yu-Min (崔玉民), HONG Wen-Shan (洪文珊), LI Hui-Quan (李慧泉), et al. Chinese J. Inorg. Chem. (无机化学学报), 2014,30(2):431-441[23] CUI Yu-Min (崔玉民), HONG Wen-Shan (洪文珊), LI Hui-Quan (李慧泉), et al. Chinese J. Inorg. Chem. (无机化学学报), 2014,30(2):431-441
24. [24] Di J, Xia J, Yin S. J. Mater. Chem., 2014,2:5340-5343[24] Di J, Xia J, Yin S. J. Mater. Chem., 2014,2:5340-5343
25. [25] Cao J, Xu B, Lin H. Chem. Eng. J., 2013,228:482-488[25] Cao J, Xu B, Lin H. Chem. Eng. J., 2013,228:482-488
26. [26] Dong F, Sun Y, Fu M. J. Hazard. Mater., 2012,219:26-34[26] Dong F, Sun Y, Fu M. J. Hazard. Mater., 2012,219:26-34
27. [27] Nethercot A H. Phys. Rev. Lett., 1974,33:1088-1091[27] Nethercot A H. Phys. Rev. Lett., 1974,33:1088-1091
28. [28] The absolute electronegativity of the atoms were referred from www.knowledgedoor.com[28] The absolute electronegativity of the atoms were referred from www.knowledgedoor.com
29. [29] Nasr C, Vinodgopal K, Fisher L, et al. J. Phys. Chem., 1996,100:8436-8442[29] Nasr C, Vinodgopal K, Fisher L, et al. J. Phys. Chem., 1996,100:8436-8442
30. [30] Soni S S, Henderson M J, Bardeau J F, et al. Adv. Mater., 2008,20:1493-1498[30] Soni S S, Henderson M J, Bardeau J F, et al. Adv. Mater., 2008,20:1493-1498
31. [31] Yin M C, Li Z S, Kou J H, et al. Environ. Sci. Technol., 2009,43:8361-8366[31] Yin M C, Li Z S, Kou J H, et al. Environ. Sci. Technol., 2009,43:8361-8366
32. [32] Li G T, Wong K H, Zhang X W, et al. Chemosphere, 2009, 76:1185-1191[32] Li G T, Wong K H, Zhang X W, et al. Chemosphere, 2009, 76:1185-1191
33. [33] Zhang L S, Wong K H, Yip H Y, et al. Environ. Sci. Technol., 2010,44:1392-1398[33] Zhang L S, Wong K H, Yip H Y, et al. Environ. Sci. Technol., 2010,44:1392-1398
34. [34] YU Li-Sheng(虞丽生). Physics of Semiconductor Heterojunction. 2nd Ed.(半导体异质结物理.2版). Beijing: Science Press, 2006.[34] YU Li-Sheng(虞丽生). Physics of Semiconductor Heterojunction. 2nd Ed.(半导体异质结物理.2版). Beijing: Science Press, 2006.

扫一扫看文章

计量

PDF下载量: 0
文章访问数: 277
HTML全文浏览量: 15

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

异质型BiOI/NaBiO₃光催化剂的合成及其光催化性能

English

Synthesis of Heterojunction Type BiOI/NaBiO₃ Photocatalyst and Enhanced Photocatalytic Activities

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南：你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

计量

通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

异质型BiOI/NaBiO3光催化剂的合成及其光催化性能

English

Synthesis of Heterojunction Type BiOI/NaBiO3 Photocatalyst and Enhanced Photocatalytic Activities

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

计量

文章相关

通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

异质型BiOI/NaBiO₃光催化剂的合成及其光催化性能

Synthesis of Heterojunction Type BiOI/NaBiO₃ Photocatalyst and Enhanced Photocatalytic Activities

CCS Chemistry：颜徐州、鲍哲南：你的皮肤可能是一片SPMs