Selective Photocatalytic Activities of Amino Acids/Peptide-Ti3C2Tx-TiO2 Composites Induced by Calcination: Adsorption Enhancement vs Charge Transfer Enhancement

光催化 材料科学 光降解 煅烧 复合数 介孔材料 吸附 比表面积 化学工程 核化学 复合材料 催化作用 化学 有机化学 工程类
作者
Hui Zhang,Jiale Yao,Xinyue Zhang,Chengyu Fu,Yaping Miao,Yani Guo,Zhi Tong,Ningtao Mao
出处
期刊:Journal of Physical Chemistry C [American Chemical Society]
卷期号:127 (5): 2231-2245 被引量:1
标识
DOI:10.1021/acs.jpcc.2c08427
摘要

A ternary component photocatalyst composed of amino acids/peptide, Ti3C2Tx, and TiO2 was created by incorporating peptide chains of wool keratin between T i3C2Tx nanosheets and TiO2 nanoparticles through the combination of both low-temperature vibration-assisted grinding process for making Ti3C2Tx nanosheets and hydrothermal synthesis process for producing TiO2 nanoparticles. The as-obtained amino acid/peptide-Ti3C2Tx-TiO2 (P-T-T) composite was further calcined under nitrogen gas protection condition to produce calcined P-T-T composite photocatalysts (CP-T-T). The photocatalytic properties of the control Ti3C2Tx-TiO2 (T-T), P-T-T, and calcined P-T-T (CP-T-T) composites were evaluated by examining their performance in the photodegradation of C.I. Reactive Blue 194 dye, tetracycline hydrochloride, and levofloxacin antibiotics. First-principles calculations were performed to verify the experimental results. It was concluded that in comparison with the T-T and P-T-T composites, the CP-T-T composite showed a significantly better photocatalytic activity in the decomposition of C.I. Reactive Blue 194. This was ascribed to the large Brunauer–Emmett–Teller (BET) specific surface area, the presence of micropores and mesopores, the narrowed band gap with an internal electric field (IEF), and the intimate contacts among the peptide, Ti3C2Tx, and TiO2, which resulted in the fast transfer and separation of charge carriers in the photocatalytic activity of the composite. The P-T-T and CP-T-T composite photocatalysts have shown different photodegradation pathways when degrading the C.I. Reactive Blue 194 dyes. The peptide chains of wool keratin led to the redistribution of the electron accumulation and depletion on the peptide, Ti3C2Tx, and TiO2, which changed the direction of IEF in the composite. It is interestingly noted that, when degrading C.I. Reactive Blue 194, the P-T-T composite photocatalysts showed an adsorption-mediated photocatalytic degradation while CP-T-T composite photocatalysts showed an charge transfer-mediated photocatalytic degradation.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
Mtoc完成签到 ,获得积分10
1秒前
酷波er应助LRW采纳,获得10
2秒前
lezard完成签到,获得积分10
2秒前
4秒前
威武的初兰完成签到 ,获得积分10
6秒前
物质尽头完成签到 ,获得积分10
7秒前
a雪橙完成签到 ,获得积分10
8秒前
欣慰小蕊完成签到,获得积分10
8秒前
8秒前
9秒前
大个应助杨宝采纳,获得10
9秒前
Jnut完成签到,获得积分10
10秒前
Peter_Zhu完成签到,获得积分10
13秒前
lisa完成签到 ,获得积分10
13秒前
save完成签到,获得积分10
14秒前
cherrychou发布了新的文献求助10
14秒前
阿夸完成签到,获得积分10
14秒前
852应助Jnut采纳,获得10
15秒前
16秒前
阔达磬完成签到,获得积分10
17秒前
小敏完成签到,获得积分10
18秒前
19秒前
呱呱呱发布了新的文献求助10
20秒前
cherrychou完成签到,获得积分10
20秒前
George完成签到 ,获得积分10
22秒前
ljy完成签到,获得积分10
22秒前
cff完成签到 ,获得积分10
23秒前
Star完成签到,获得积分10
24秒前
呱呱呱完成签到,获得积分10
24秒前
HR_GR完成签到,获得积分10
27秒前
yk完成签到 ,获得积分10
28秒前
毛毛完成签到,获得积分10
28秒前
30秒前
灵活的胖子wxp完成签到,获得积分10
30秒前
全一斩完成签到,获得积分10
30秒前
典雅巧凡完成签到 ,获得积分10
32秒前
111完成签到 ,获得积分10
32秒前
无名花生完成签到 ,获得积分10
32秒前
36秒前
张豪杰完成签到 ,获得积分10
37秒前
高分求助中
Production Logging: Theoretical and Interpretive Elements 2500
Востребованный временем 2500
Agaricales of New Zealand 1: Pluteaceae - Entolomataceae 1040
Healthcare Finance: Modern Financial Analysis for Accelerating Biomedical Innovation 1000
Classics in Total Synthesis IV: New Targets, Strategies, Methods 1000
지식생태학: 생태학, 죽은 지식을 깨우다 600
Neuromuscular and Electrodiagnostic Medicine Board Review 500
热门求助领域 (近24小时)
化学 医学 材料科学 生物 工程类 有机化学 生物化学 纳米技术 内科学 物理 化学工程 计算机科学 复合材料 基因 遗传学 物理化学 催化作用 细胞生物学 免疫学 电极
热门帖子
关注 科研通微信公众号,转发送积分 3460255
求助须知:如何正确求助?哪些是违规求助? 3054415
关于积分的说明 9042272
捐赠科研通 2743808
什么是DOI,文献DOI怎么找? 1505311
科研通“疑难数据库(出版商)”最低求助积分说明 695627
邀请新用户注册赠送积分活动 694916