溶胶制备工艺对TiO2光催化剂活性的影响

史载锋; 任学昌; 孔令仁

环境化学

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史载锋, 任学昌, 孔令仁. 溶胶制备工艺对TiO2光催化剂活性的影响[J]. 环境化学, 2005, 24(5): 525-527.

引用本文:

史载锋, 任学昌, 孔令仁. 溶胶制备工艺对TiO2光催化剂活性的影响[J]. 环境化学, 2005, 24(5): 525-527.

SHI Zai-feng, REN Xue-chang, KONG Ling-ren. EFFECTS OF PREPARATION METHOD OF SOL ON THE PHOTOCATALYTIC ACT IVITY OF TiO2[J]. Environmental Chemistry, 2005, 24(5): 525-527.

Citation:

SHI Zai-feng, REN Xue-chang, KONG Ling-ren. EFFECTS OF PREPARATION METHOD OF SOL ON THE PHOTOCATALYTIC ACT IVITY OF TiO2[J]. Environmental Chemistry, 2005, 24(5): 525-527.

溶胶制备工艺对TiO2光催化剂活性的影响

1.
南京大学环境学院, 污染控制与资源化研究国家重点实验室, 南京, 210093;
2.
海南师范学院化学系, 海口, 571158
基金项目:
国家863计划项目(2002AA601250)

高等学校博士学科点专项科研基金(20020284044)

海南省自然科学基金(20201)

EFFECTS OF PREPARATION METHOD OF SOL ON THE PHOTOCATALYTIC ACT IVITY OF TiO2

1.
State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210093;
2.
Department of Chemistry, Hainan Normal University, Haikou, 571158
Fund Project:

摘要: 考察了不同酸、溶剂以及不同比例水制备的溶胶对TiO2光催化剂活性的影响进行了分析.结果表明,在盐酸、醋酸、草酸和甲基丙烯酸中,采用醋酸所得催化剂活性最好;在乙醇、正丙醇、异丙醇、正丁醇4种溶剂中,采用正丁醇作溶剂所得催化剂活性最好;最佳溶胶制备条件为钛酸丁酯:水:冰醋酸:正丁醇=1:3:8:10(摩尔比);最优条件下制备的TiO2催化剂平均粒径为15.19nm,晶型为锐钛矿,对小于320nm的紫外光有良好的吸收;利用研制的TiO2光催化剂降解多菌灵废水,反应1h,COD去除率在35%左右;对9.606mg·l-1的苯酚溶液光降解半衰期为4.6min.
- 溶胶 /
- 二氧化钛 /
- 光催化活性
Abstract: Effects of acids, dissolvent and their loading as well as water in preparati on of sol on the photocatalytic activity of TiO2 were studied. Results ind icate that the acetic acid is the optimal acid compared with hydrochloric acid, ethanedioic acid and methacryl acid, and n-butanol is the optimal dissolven t compared with ethanol, normal propyl alcohol and isopropanol. For the preparat ion of sol, the optimal molar scale of tetrabutylorthotitanate, water, acetic ac id and n-butanol are 1,3,8 and 10. When the sol is heated for 1h at 500℃, the resulting crystalline form of TiO2 is anatase with a mean par ticle size of 15.19 nm, and its absorbance is good for the light with wave leng th less than or equal to 320 nm. Photo-degradation experiments with the optimal TiO2show that the half-life time of phenol (9.606 mg·l-1) is 4.6 min and COD removal of carbendazol is 35 % from initial content of 3700 mg·l-1.
- sol /
- titanium dioxide /
- photocatalytic activity

[1]

银董红,邓吨英,陈恩伟等, 溶胶-凝胶法制备二氧化钛薄膜的研究进展. 工业催化,2004,12(1):1-6
[2] 廖东亮,肖新颜,张会平等,溶胶-凝胶法制备纳米二氧化钛的工艺研究. 化学工业与工程,2003,20(5):256-260
[3] 高春华,TiO₂纳米粉体的制备工艺研究进展. 电子元件与材料,2002,21(9):24-27
[4] 余家国,赵修建,赵青南,TiO₂纳米薄膜的溶胶-凝胶工艺制备和表征.物理化学学报,2000,16(9):792-797
[5] 陈早明,郑典模, 纳米二氧化钛制备方法. 江西化工,2003,(1):7-10
[6] Mennig M,Oliveira P W,Schmidt H,Interference Coatings on Glass Based on Photopolymerizable Nanomer Material. Thin Solid Films,1999,351(1-2):99-102
[7] 陈琦丽,唐超群,肖循,TiO₂纳米微粒的溶胶-凝胶法制备及XRD分析. 材料科学与工程,2002,20(2):224-226

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史载锋, 任学昌, 孔令仁. 溶胶制备工艺对TiO2光催化剂活性的影响[J]. 环境化学, 2005, 24(5): 525-527.

引用本文:

史载锋, 任学昌, 孔令仁. 溶胶制备工艺对TiO2光催化剂活性的影响[J]. 环境化学, 2005, 24(5): 525-527.

SHI Zai-feng, REN Xue-chang, KONG Ling-ren. EFFECTS OF PREPARATION METHOD OF SOL ON THE PHOTOCATALYTIC ACT IVITY OF TiO2[J]. Environmental Chemistry, 2005, 24(5): 525-527.

Citation:

SHI Zai-feng, REN Xue-chang, KONG Ling-ren. EFFECTS OF PREPARATION METHOD OF SOL ON THE PHOTOCATALYTIC ACT IVITY OF TiO2[J]. Environmental Chemistry, 2005, 24(5): 525-527.

溶胶制备工艺对TiO2光催化剂活性的影响

1. 南京大学环境学院, 污染控制与资源化研究国家重点实验室, 南京, 210093;
2. 海南师范学院化学系, 海口, 571158

收稿日期: 2004-12-12

基金项目:

国家863计划项目(2002AA601250)

高等学校博士学科点专项科研基金(20020284044)

海南省自然科学基金(20201)

关键词:

溶胶 /
二氧化钛 /
光催化活性

摘要: 考察了不同酸、溶剂以及不同比例水制备的溶胶对TiO2光催化剂活性的影响进行了分析.结果表明,在盐酸、醋酸、草酸和甲基丙烯酸中,采用醋酸所得催化剂活性最好;在乙醇、正丙醇、异丙醇、正丁醇4种溶剂中,采用正丁醇作溶剂所得催化剂活性最好;最佳溶胶制备条件为钛酸丁酯:水:冰醋酸:正丁醇=1:3:8:10(摩尔比);最优条件下制备的TiO2催化剂平均粒径为15.19nm,晶型为锐钛矿,对小于320nm的紫外光有良好的吸收;利用研制的TiO2光催化剂降解多菌灵废水,反应1h,COD去除率在35%左右;对9.606mg·l-1的苯酚溶液光降解半衰期为4.6min.

English Abstract

EFFECTS OF PREPARATION METHOD OF SOL ON THE PHOTOCATALYTIC ACT IVITY OF TiO2

1. State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210093;
2. Department of Chemistry, Hainan Normal University, Haikou, 571158

Received Date: 2004-12-12

Fund Project:

Keywords:

Abstract: Effects of acids, dissolvent and their loading as well as water in preparati on of sol on the photocatalytic activity of TiO2 were studied. Results ind icate that the acetic acid is the optimal acid compared with hydrochloric acid, ethanedioic acid and methacryl acid, and n-butanol is the optimal dissolven t compared with ethanol, normal propyl alcohol and isopropanol. For the preparat ion of sol, the optimal molar scale of tetrabutylorthotitanate, water, acetic ac id and n-butanol are 1,3,8 and 10. When the sol is heated for 1h at 500℃, the resulting crystalline form of TiO2 is anatase with a mean par ticle size of 15.19 nm, and its absorbance is good for the light with wave leng th less than or equal to 320 nm. Photo-degradation experiments with the optimal TiO2show that the half-life time of phenol (9.606 mg·l-1) is 4.6 min and COD removal of carbendazol is 35 % from initial content of 3700 mg·l-1.

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溶胶制备工艺对TiO2光催化剂活性的影响

EFFECTS OF PREPARATION METHOD OF SOL ON THE PHOTOCATALYTIC ACT IVITY OF TiO2

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溶胶制备工艺对TiO2光催化剂活性的影响

English Abstract

EFFECTS OF PREPARATION METHOD OF SOL ON THE PHOTOCATALYTIC ACT IVITY OF TiO2

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