B、N和Ce共掺杂TiO2光催化剂的制备及表征

张鹏会; 李艳春; 王九思

doi:10.12030/j.cjee.20150827

环境工程学报

B、N和Ce共掺杂TiO2光催化剂的制备及表征

, ,

张鹏会, 李艳春, 王九思. B、N和Ce共掺杂TiO2光催化剂的制备及表征[J]. 环境工程学报, 2015, 9(8): 3757-3762. doi: 10.12030/j.cjee.20150827

引用本文:

张鹏会, 李艳春, 王九思. B、N和Ce共掺杂TiO2光催化剂的制备及表征[J]. 环境工程学报, 2015, 9(8): 3757-3762. doi: 10.12030/j.cjee.20150827

Zhang Penghui, Li Yanchun, Wang Jiusi. Preparation and characterization of titania catalyst co-doped with boron, nitrogen, and cerium[J]. Chinese Journal of Environmental Engineering, 2015, 9(8): 3757-3762. doi: 10.12030/j.cjee.20150827

Citation:

Zhang Penghui, Li Yanchun, Wang Jiusi. Preparation and characterization of titania catalyst co-doped with boron, nitrogen, and cerium[J]. Chinese Journal of Environmental Engineering, 2015, 9(8): 3757-3762. doi: 10.12030/j.cjee.20150827

B、N和Ce共掺杂TiO2光催化剂的制备及表征

1.
陇东学院化学化工学院, 庆阳 745000
2.
兰州交通大学化学与生物工程学院, 兰州 730070
基金项目:
甘肃省应用化学省级重点学科建设项目资助(GSACKS20130113)

陇东学院青年科技创新项目(xyzk1202)
中图分类号: TQ032.4

Preparation and characterization of titania catalyst co-doped with boron, nitrogen, and cerium

1.
College of Chemistry and Chemical Engineering, Longdong University, Qingyang 745000, China
2.
School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
Fund Project:

摘要: 以尿素、硼酸和硝酸铈分别作为氮、硼和铈源,采用溶胶-凝胶法制备出B,N和Ce共掺杂TiO2光催化剂,并用XRD、XPS、FT-IR和SEM等对其进行了表征。以酸性大红染料为污染物,考察其光催化活性。结果表明,所制备的光催化剂均为锐钛矿;B和N元素进入TiO2的晶格,形成了O-Ti-N和B-Ti-O键,而Ce以氧化物(Ce2O3)形式分散于TiO2的表面,抑制了电子-空穴对复合,提高光量子效率,增强了共掺杂TiO2光催化活性。另外,B-N-Ce-TiO2催化剂重复使用10次后,其对大红染料的降解率仍可以达到95%以上。
- 二氧化钛 /
- 共掺杂 /
- 溶胶-凝胶法 /
- 光催化
Abstract: The titania photocatalyst co-doped with boron, nitrogen and cerium was prepared by the sol-gel method. Here boric acid, urea and cerium nitrate were used as precursors of boron, nitrogen and cerium, respectively. The as-prepared co-doped titania were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM). The photocatalytic activities were evaluated by the degradation of acid scarlet dye. The results showed that all the samples were anatase form. The nitrogen and boron atoms were incorporated into the crystal structure of titania to form O-Ti-N and B-Ti-O linkage, which could narrow the band gap energy. The doped cerium atoms existed in the forms of Ce2O3, dispersed on the surface of TiO2, suppressed the combination of photo-induced electron-hole pairs, increased the photo quantum efficiency, and led to the enhancement of photocatalytic performance. Furthermore, the degradation rate of the dye by B-N-Ce-TiO2 catalyst reached 95% after being re-used for 10 times.
- titania /
- co-doping /
- sol-gel preparation /
- photocatalysis

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张鹏会, 李艳春, 王九思. B、N和Ce共掺杂TiO2光催化剂的制备及表征[J]. 环境工程学报, 2015, 9(8): 3757-3762. doi: 10.12030/j.cjee.20150827

引用本文:

张鹏会, 李艳春, 王九思. B、N和Ce共掺杂TiO2光催化剂的制备及表征[J]. 环境工程学报, 2015, 9(8): 3757-3762. doi: 10.12030/j.cjee.20150827

Citation:

B、N和Ce共掺杂TiO2光催化剂的制备及表征

1. 陇东学院化学化工学院, 庆阳 745000
2. 兰州交通大学化学与生物工程学院, 兰州 730070

收稿日期: 2014-07-26

基金项目:

甘肃省应用化学省级重点学科建设项目资助(GSACKS20130113)

陇东学院青年科技创新项目(xyzk1202)

关键词:

摘要: 以尿素、硼酸和硝酸铈分别作为氮、硼和铈源,采用溶胶-凝胶法制备出B,N和Ce共掺杂TiO2光催化剂,并用XRD、XPS、FT-IR和SEM等对其进行了表征。以酸性大红染料为污染物,考察其光催化活性。结果表明,所制备的光催化剂均为锐钛矿;B和N元素进入TiO2的晶格,形成了O-Ti-N和B-Ti-O键,而Ce以氧化物(Ce2O3)形式分散于TiO2的表面,抑制了电子-空穴对复合,提高光量子效率,增强了共掺杂TiO2光催化活性。另外,B-N-Ce-TiO2催化剂重复使用10次后,其对大红染料的降解率仍可以达到95%以上。

English Abstract

Preparation and characterization of titania catalyst co-doped with boron, nitrogen, and cerium

1. College of Chemistry and Chemical Engineering, Longdong University, Qingyang 745000, China
2. School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China

Received Date: 2014-07-26

Fund Project:

Keywords:

Abstract: The titania photocatalyst co-doped with boron, nitrogen and cerium was prepared by the sol-gel method. Here boric acid, urea and cerium nitrate were used as precursors of boron, nitrogen and cerium, respectively. The as-prepared co-doped titania were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM). The photocatalytic activities were evaluated by the degradation of acid scarlet dye. The results showed that all the samples were anatase form. The nitrogen and boron atoms were incorporated into the crystal structure of titania to form O-Ti-N and B-Ti-O linkage, which could narrow the band gap energy. The doped cerium atoms existed in the forms of Ce2O3, dispersed on the surface of TiO2, suppressed the combination of photo-induced electron-hole pairs, increased the photo quantum efficiency, and led to the enhancement of photocatalytic performance. Furthermore, the degradation rate of the dye by B-N-Ce-TiO2 catalyst reached 95% after being re-used for 10 times.

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B、N和Ce共掺杂TiO2光催化剂的制备及表征

Preparation and characterization of titania catalyst co-doped with boron, nitrogen, and cerium

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B、N和Ce共掺杂TiO2光催化剂的制备及表征

English Abstract

Preparation and characterization of titania catalyst co-doped with boron, nitrogen, and cerium

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