对g-C3N4光催化剂进行双分子介导聚合,以实现高效的污染物降解和进化
Xueying Zhao1, Chao Yang1, Jide Wang1
1Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, School of Chemical Engineering and Technology, Xinjiang University, Urumqi, 830046, China.
双分子调解创造了松散纹理的石墨碳化物 (g-C3N4) 纳米片. 这增强了污染物降解和进化的光催化活性.
科学领域:
- 材料科学 材料科学 材料科学
- 光催化作用的光催化
- 纳米技术纳米技术
背景情况:
- 石墨碳化物 (g-C3N4) 是一个有前途的光催化剂,但由于其紧的结构和快速的电子孔重组,其效率较低.
- 现有的合成方法往往导致表面积有限,电荷分离差的材料,阻碍了实际应用.
研究的目的:
- 为石墨碳化物 (g-C3N4) 开发一种新的合成策略,以改善结构性质和增强光催化性能.
- 研究双分子调解对g-C3N4的形态,结晶性和电子性质的影响.
- 评估修改的g-C3N4对污染物降解和进化的光催化效率.
主要方法:
- 松散纹理的g-C3N4纳米薄膜的合成通过热聚合的胺和尿素使用酸和水作为结构介质.
- 通过溶液阶段沉积,将 ZnS-NiS2 (ZNS) 协催化剂加载到 g-C3N4纳米薄膜上.
- 材料性质的表征和光催化活性的评估,以降解甲基色,甲蓝色,西普罗夫洛克萨,o-尼特罗阿尼林和的演变.
主要成果:
- 双分子介导合成产生了g-C3N4纳米薄膜,其表面积增加,结晶性改善,导电带负移.
- 性能最好的ZNS/g-C3N4复合物 (ZNS/WOCN-0.1) 显示了各种污染物的高降解效率 (例如,95.3%的甲基色,98.3%的o-nitroaniline).
- 与ZNS/WOCN-0.1相比,ZNS/WOCN-0.1实现了703.4μmolh-1g-1的进化率,比ZNS/CN提高了109%,这是由于电荷分离和转移的改善.
结论:
- 双分子介导聚合是一种有效的策略,用于调整结构并增强g-C3N4的光催化性能.
- 开发的ZNS/g-C3N4纳米板显示了环境修复和清洁能源生产的巨大潜力.
- 这种方法为设计具有卓越活性的高级石墨碳化物基光催化剂提供了一条途径.
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