Preparation of C/TiO2-SO42- and their water splitting performance

TENG Xuegang; YANG Renchun; REN Chao; LIU Lulu; WANG Mingxing

doi:10.11949/j.issn.0438-1157.20170308

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Preparation of C/TiO₂-SO₄^2- and their water splitting performance

更新时间：2025-12-10

- Preparation of C/TiO₂-SO₄^2- and their water splitting performance
- CIESC Journal Issue 11, Pages: 4414-4422(2017)
- 作者机构：
  
  安徽工程大学生物与化学工程学院,安徽,芜湖,241000
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20170308
  CLC： 611
- Online First：05 November 2017，
  
  Published：05 November 2017
- 稿件说明：
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TENG Xuegang, YANG Renchun, REN Chao, et al. Preparation of C/TiO₂-SO₄^2- and their water splitting performance[J]. CIESC Journal, 2017, (11): 4414-4422. DOI: 10.11949/j.issn.0438-1157.20170308.
DOI：

TENG Xuegang, YANG Renchun, REN Chao, et al. Preparation of C/TiO₂-SO₄^2- and their water splitting performance[J]. CIESC Journal, 2017, (11): 4414-4422. DOI: 10.11949/j.issn.0438-1157.20170308. DOI：

摘要

通过溶胶-凝胶制备过程中水含量控制，分别获得了硫酸根修饰的TiO2（25）和无修饰的TiO2（150）两种二氧化钛载体。在两种载体上，通过浸渍法引入不同浓度的碳点胶体，获得了系列不同C含量的Cx/TiO2（25）和Cx/TiO2（150）催化剂。利用TEM、XRD、FT-IR、UV-Vis、BET、XPS等表征分析了催化剂的表面形貌、晶格间距、晶型结构、光吸收、孔结构及元素组成。结果显示：相对于无硫酸根修饰的TiO2（150）催化剂，硫酸根修饰的TiO2（25）催化剂的光吸收发生显著红移，展示了更宽的可见光响应；对于TiO2（25）样品，C的引入可提高其Oads/Olatt比值。催化性能研究显示，C的引入可以提高其光催化活性。

Abstract

The SO42- modified TiO2(25) and the unmodified TiO2(150) have been prepared by sol-gel method via controlling the amount of introduced deionized water. Two series of C modified Cx/TiO2(25) and Cx/TiO2(150) samples were obtained by impregnating the TiO2(25) and TiO2(150) in carbon dots solution with various concentrations. The lattice spacing

crystalline

light absorption

pore size

specific surface area and element composition of the prepared catalysts were characterized by TEM

XRD

FT-IR

UV-Vis

BET and XPS. The results indicated that compared with the unmodified TiO2(150)

the SO42- modified TiO2(25) exhibited a distinct red shift phenomenon and broader visible light response for the light absorption. Moreover

the Oads/Olatt ratios can be improved distinctly for the TiO2(25) when the carbon dots were introduced. The catalytic performance showed that the addition of C can enhance the corresponding photocatalytic activity.

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