Multifunctional core-double-shell C@MnO@TiO2 catalysts with enhanced full-light conversion for the highly efficient photothermal oxidation of toluene

材料科学 催化作用 光催化 涂层 甲苯 煅烧 光热治疗 化学工程 吸附 辐照 复合材料 纳米技术 化学 有机化学 工程类 物理 核物理学
作者
Jian Wang,Xingxing Gao,Yajun Wang,Shaoyan Wang,Zhiwen Xie,Binzheng Yang,Zhiguo Zhang,Zhuang Yang,Lei Kang,Wenqing Yao
出处
期刊:Applied Catalysis B-environmental [Elsevier BV]
卷期号:317: 121789-121789 被引量:40
标识
DOI:10.1016/j.apcatb.2022.121789
摘要

In this study, the integrated core-double-shell structures of C@MnO@TiO2 (abbreviation CMT) composites have been rationally designed and fabricated utilizing of carbon spheres as frameworks and reducing agents, which were introduced a TiO2 outer shell on MnO2 @C nanospheres by sol-gel coating and subsequent in-situ calcination reduction process. Owing to the well-defined structures, the as-prepared CMT composites can efficiently convert full-light into heat energy, achieve the rapid adsorption and enrichment of toluene and motivate the synergistic effects of photocatalysis of TiO2 and full-light driven thermalcatalysis of MnOx @C, resulting in the significantly enhanced photothermal catalytic performance of toluene oxidation upon UV-Vis-IR irradiation of Xe lamp. Furthermore, the strategy on changing the molar ratio of Mn/Ti among CMT composites can not only act as important role in the control of the coating thickness of outer layer TiO2, surface morphologies and physicochemical properties within a certain range, but also yield opportunities to adjust photothermal synergistic effects between ternary components among CMT composites. Compared with other CMT composites, CMT-3 samples with a suitable Mn/Ti molar ratio of 0.4 exhibited much higher photothermal catalytic activity including a high toluene removal efficiency and CO2 production rate (99.1 % within 90 min and 102.5 μmol.g−1.min−1, respectively), which were attributed to its optimized coating thickness of outer layer TiO2, and the optimal distribution ratio of surface oxygen species (Oads/Olatt/Owat) and electronic valence of Mn species (Mn2+/Mn3+/Mn4+). The possible mechanism for photothermal catalytic oxidation of toluene over CMT composites was also discussed in terms of the special core-double-shell structure, matching electronic band levels and photothermal synergistic effects.
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
十一完成签到,获得积分20
刚刚
cm完成签到,获得积分10
1秒前
一台小钢炮完成签到,获得积分10
2秒前
2秒前
Wguan发布了新的文献求助20
2秒前
英俊的铭应助asdf采纳,获得10
2秒前
我是老大应助123采纳,获得10
3秒前
陨落的繁星完成签到,获得积分10
3秒前
十一发布了新的文献求助10
3秒前
顺科研发布了新的文献求助10
3秒前
李多多完成签到,获得积分10
3秒前
浪浪山第一酷完成签到,获得积分10
4秒前
眼睛大的胡萝卜完成签到 ,获得积分10
4秒前
顺心的飞飞完成签到,获得积分10
4秒前
ymh完成签到,获得积分10
5秒前
dropofwater完成签到,获得积分10
5秒前
文章快快来完成签到,获得积分10
5秒前
ZX612完成签到,获得积分10
5秒前
全糖完成签到,获得积分10
5秒前
DICPGLF完成签到,获得积分10
5秒前
炎帝完成签到 ,获得积分10
6秒前
Dritsw应助熬夜的桃子采纳,获得10
7秒前
李爱国应助renwoxing采纳,获得10
7秒前
QQ完成签到,获得积分10
7秒前
8秒前
8秒前
8秒前
传奇3应助大美女采纳,获得10
8秒前
哈哈2022完成签到,获得积分10
8秒前
7890733完成签到,获得积分10
9秒前
10秒前
man完成签到 ,获得积分10
10秒前
张兰发布了新的文献求助10
10秒前
10秒前
FashionBoy应助hhh采纳,获得10
11秒前
冷酷的松思完成签到,获得积分10
11秒前
修梨完成签到,获得积分20
11秒前
0713完成签到,获得积分10
11秒前
ttkd11完成签到,获得积分10
11秒前
Ava应助HonS采纳,获得10
12秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Cognitive Neuroscience: The Biology of the Mind 1000
Technical Brochure TB 814: LPIT applications in HV gas insulated switchgear 1000
Immigrant Incorporation in East Asian Democracies 600
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
A Preliminary Study on Correlation Between Independent Components of Facial Thermal Images and Subjective Assessment of Chronic Stress 500
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 3968608
求助须知:如何正确求助?哪些是违规求助? 3513486
关于积分的说明 11168243
捐赠科研通 3248926
什么是DOI,文献DOI怎么找? 1794540
邀请新用户注册赠送积分活动 875188
科研通“疑难数据库(出版商)”最低求助积分说明 804676