Photo-Thermo Catalytic Oxidation of C<sub>3</sub>H<sub>8</sub> and C<sub>3</sub>H<sub>6</sub> over the WO<sub>3</sub>-TiO<sub>2</sub> Supported Pt Single-Atom Catalyst

催化作用 化学 生物化学
作者
Ruijie Zhu,Leilei Kang,Lin Li,Xiaoli Pan,Hua Wang,Yang Su,Guangyi Li,Hongkui Cheng,Rengui Li,Xiaoyan Liu,Aiqin Wang
出处
期刊:Acta Physico-chimica Sinica [Peking University Press]
卷期号:: 2303003-2303003 被引量:2
标识
DOI:10.3866/pku.whxb202303003
摘要

Abstract: Catalytic oxidation is a commonly employed technology in the industry for removing volatile organic compounds (VOCs) due to its exceptional efficiency under mild operating conditions. Although supported Pt-based nano-catalysts are recognized widely as one of the most promising and extensively used industrial catalysts for VOC abatement, their practical application, and development are restricted by their exorbitant cost. Single-atom catalyst (SAC) with maximized metal utilization and exclusive electronic character has been explored extensively in various catalytic reactions. However, Pt SAC is usually deemed to be inactive in hydrocarbon oxidation reactions in thermal catalysis, compared with its nanoparticle counterpart. Here, we demonstrate that the WO3-TiO2 supported Pt SAC (Pt1/WO3-TiO2) exhibits much higher activities than the corresponding nanoparticle catalyst (PtNP/WO3-TiO2) in photo-thermo catalytic oxidation of C3H8 and C3H6, which represent different kinds of typical VOCs. A key finding is that the activities of Pt1/WO3-TiO2 and PtNP/WO3-TiO2 can be accelerated in photo-thermo catalytic C3H8 oxidation by overcoming oxygen poisoning. Upon the light irradiation, the apparent active energy (Ea) of the Pt1/WO3-TiO2 and PtNP/WO3-TiO2 decline from 116 to 60 kJ·mol-1 and from 103 to 30 kJ·mol-1, respectively, substantiating their effectiveness in photo-thermo catalysis. Notably, a substantially higher reaction rate of 3792 μmol∙gPt-1∙s-1 on the Pt1/WO3-TiO2 is achieved, which should be a benchmark for C3H8 oxidation. More intriguingly, photo-thermo catalytic C3H6 oxidation on the PtNP/WO3-TiO2 is prohibited due to the strong adsorption-induced C3H6 poisoning on the Pt nanoparticles, for which the Ea of the PtNP/WO3-TiO2 catalyst for C3H6 oxidation is maintained at approximately 55 kJ·mol-1, regardless of the light irradiation. In comparison, the C3H6 poisoning on the Pt1/WO3-TiO2 can be mitigated by light illumination, where the Ea of the Pt1/WO3-TiO2 catalyst for C3H6 oxidation dramatically reduced from 49 to 16 kJ·mol-1, signifying that the high energy barrier of C3H6 oxidation can be mediated by the light. Profiting from the apt affinity between C3H6 and Pt single atoms, the photogenerated electrons accumulated on the Pt single atoms produce repulsive force towards the electron-rich C3H6 molecules, which is conducive to the C3H6 desorption from the Pt1/WO3-TiO2. Therefore, the Pt1/WO3-TiO2 exhibits enhanced activity in photo-thermo catalytic C3H6 oxidation. This study exemplifies that the advantages of SAC are not only saving the consumption of precious metals but also discovering new catalytic reactions on the account of the specific electronic characteristic.
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
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

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
wwl发布了新的文献求助10
刚刚
loski发布了新的文献求助10
2秒前
2秒前
能量球完成签到,获得积分10
3秒前
3秒前
4秒前
5秒前
Anyixx完成签到 ,获得积分10
6秒前
清爽尔安发布了新的文献求助10
8秒前
9秒前
丫丫发布了新的文献求助10
10秒前
huangyikun发布了新的文献求助10
10秒前
叔铭完成签到,获得积分10
11秒前
大个应助ZONG采纳,获得10
13秒前
13秒前
Ma完成签到,获得积分10
14秒前
孙燕应助猪猪hero采纳,获得10
14秒前
会发光的小灰灰完成签到,获得积分10
14秒前
板凳儿cc发布了新的文献求助10
14秒前
黑色天使发布了新的文献求助10
15秒前
15秒前
激情的代曼完成签到,获得积分10
15秒前
16秒前
19秒前
缓慢手机完成签到,获得积分10
19秒前
丫丫完成签到,获得积分10
19秒前
20秒前
时尚俊驰发布了新的文献求助10
20秒前
耍酷的冷雪完成签到,获得积分10
21秒前
wanci应助baonali采纳,获得10
23秒前
ZONG发布了新的文献求助10
24秒前
wuy发布了新的文献求助10
24秒前
123完成签到,获得积分10
25秒前
26秒前
saisyo发布了新的文献求助10
27秒前
隐形曼青应助炸胡娃娃采纳,获得30
28秒前
坦率白萱应助wwl采纳,获得10
28秒前
NexusExplorer应助小晓采纳,获得10
28秒前
29秒前
29秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3989444
求助须知:如何正确求助?哪些是违规求助? 3531531
关于积分的说明 11254250
捐赠科研通 3270191
什么是DOI,文献DOI怎么找? 1804901
邀请新用户注册赠送积分活动 882105
科研通“疑难数据库(出版商)”最低求助积分说明 809174