三维有序大孔复合材料Bi2O3/TiO2制备与多模式下光催化降解结晶紫

引用本文: 黄贤丹, 李莉, 魏秋颖, 张文治, 路露. 三维有序大孔复合材料Bi₂O₃/TiO₂制备与多模式下光催化降解结晶紫[J]. 物理化学学报, 2013, 29(12): 2615-2623. doi: 10.3866/PKU.WHXB201310221 shu

Citation: HUANG Xian-Dan, LI Li, WEI Qiu-Ying, ZHANG Wen-Zhi, LU Lu. Preparation of Three-Dimensionally Ordered Macroporous Composite Bi₂O₃/TiO₂ and Its Photocatalytic Degradation of Crystal Violet under Multiple Modes[J]. Acta Physico-Chimica Sinica, 2013, 29(12): 2615-2623. doi: 10.3866/PKU.WHXB201310221 shu

三维有序大孔复合材料Bi₂O₃/TiO₂制备与多模式下光催化降解结晶紫

黄贤丹 ^1, ,
李莉 ^1,2, ,
魏秋颖 ^1, ,
张文治 ^1, ,
路露 ^1,

基金项目:
国家自然科学基金(21376126) (21376126)

黑龙江省自然科学基金(B201106) (B201106)

黑龙江省教育厅科学技术研究项目(12511592) (12511592)

黑龙江省政府博士后资助经费(LBH-Z11108) (LBH-Z11108)

黑龙江省普通高校绿色化工技术重点实验室开放课题(2013 年)资助 (2013 年)

摘要:

以TiO₂为基体, 在聚苯乙烯(PS)胶球和EO₂₀PO₇₀EO₂₀(P123)两种模板剂作用下通过溶胶-凝胶及煅烧后处理方法制备了三维有序大孔纳米复合材料Bi₂O₃/TiO₂. 经傅里叶变换红外(FT-IR)光谱、X-射线衍射(XRD)、等离子体原子发射光谱(ICP-AES)、紫外-可见漫反射吸收光谱(UV-Vis DRS)、X-射线光电子能谱(XPS)、扫描电子显微镜(SEM)和N₂吸附-脱附等物理测试手段对其组成、结构、形貌及表面物理化学性能进行了表征. 结果表明, 该复合材料晶型结构良好, 孔结构排列整齐有序, 孔壁呈介孔结构, 属于三维有序大孔材料(3DOM). 与TiO₂相比, 3DOM-Bi₂O₃/TiO₂对光的吸收至少红移60 nm, 且红移至可见区. 在紫外光、可见光以及微波辅助等多模式光催化降解结晶紫的实验中, 复合材料3DOM-Bi₂O₃/TiO₂表现出良好的光催化活性, 其活性明显高于P25、Bi₂O₃和Bi₂O₃/TiO₂. 同时, 该复合材料针对不同类型的染料均表现出较好的紫外光降解效果, 且3 次循环实验后, 依旧保持较高活性.

关键词:

English

Preparation of Three-Dimensionally Ordered Macroporous Composite Bi₂O₃/TiO₂ and Its Photocatalytic Degradation of Crystal Violet under Multiple Modes

1.
1 College of Materials Science and Engineering, Qiqihar University, Qiqihar 161006, Heilongjiang Province, P. R. China;
2 Key Laboratory of Composite Modified Material of Colleges in Heilongjang Provence, Qiqihar 161006, Heilongjiang Province, P. R. China
Received Date: 16 July 2013
Available Online: 28 November 2013
Fund Project:
国家自然科学基金(21376126)

黑龙江省自然科学基金(B201106)

黑龙江省教育厅科学技术研究项目(12511592)

黑龙江省政府博士后资助经费(LBH-Z11108)

黑龙江省普通高校绿色化工技术重点实验室开放课题(2013 年)资助

Abstract:

Polystyrene latex (PS) spheres and EO₂₀PO₇₀O₂₀ (P123) were used as dual template agents, with TiO₂ as the matrix, to prepare a three-dimensionally ordered macroporous (3DOM) composite Bi₂O₃/TiO₂, using a sol-gel method and post-processing calcination. The phase structures, chemical composition, morphology, and surface physicochemical properties were characterized using X-ray diffraction (XRD), Fourier-transform infrared (FT-IR), ultraviolet-visible diffuse reflectance (UV-Vis DRS) and X-ray photoelectron spectroscopies (XPS), inductively coupled plasma atomic emission spectroscopy (ICP-AES), scanning electron microscopy (SEM), and N₂ adsorption-desorption measurements. The results show that the composite is well crystallized and has a highly ordered porous structure with mesoporous walls; it is a 3DOM material. The light absorption of 3DOM-Bi₂O₃/TiO₂ is red-shifted by about 60 nm to the visible region compared with TiO₂. In the photocatalytic degradation of crystal violet using various methods, namely ultraviolet, visible-light, and microwave-assisted irradiation, the activity of 3DOM-Bi₂O₃/TiO₂ is significantly higher than those of P25, Bi₂O₃, and Bi₂O₃/TiO₂. The 3DOM-Bi₂O₃/TiO₂ composite also shows od photocatalytic activity in the degradations of various dyes under ultraviolet irradiation. The 3DOM-Bi₂O₃/TiO₂ activity is well retained after three cycles.

Key words:

Polystyrene
/ Three-dimensionally ordered macroporous
/ Bi₂O₃/TiO₂
/ Photocatalysis
/ Crystal violet

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沈阳化工大学材料科学与工程学院沈阳 110142

三维有序大孔复合材料Bi₂O₃/TiO₂制备与多模式下光催化降解结晶紫

English

Preparation of Three-Dimensionally Ordered Macroporous Composite Bi₂O₃/TiO₂ and Its Photocatalytic Degradation of Crystal Violet under Multiple Modes

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？

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通讯作者: 陈斌, bchen63@163.com

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