亲爱的研友该休息了!由于当前在线用户较少,发布求助请尽量完整地填写文献信息,科研通机器人24小时在线,伴您度过漫漫科研夜!身体可是革命的本钱,早点休息,好梦!

Accurate design of spatially separated double active site in Bi4NbO8Cl single crystal to promote Z - Scheme photocatalytic overall water splitting

光催化 分解水 氧化还原 材料科学 光化学 电解水 催化作用 反应速率 活动站点 辐照 化学 无机化学 物理化学 电极 电解 物理 电解质 生物化学 核物理学
作者
Kailong Gao,Hongxia Guo,Yanan Hu,Hongbin He,Mowen Li,Xiaoming Gao,Feng Fu
出处
期刊:Journal of Energy Chemistry [Elsevier BV]
卷期号:87: 568-582 被引量:21
标识
DOI:10.1016/j.jechem.2023.08.038
摘要

The efficiency of photocatalytic overall water splitting was mainly limited by the slow reaction kinetics of water oxidation. How to design effective surface active site to overcome the slow water oxidation reaction was a major challenge. Here, we propose a strategy to accelerate surface water oxidation through the fabrication spatially separated double active sites. FeCoPi/Bi4NbO8Cl-OVs photocatalyst with spatially separated double active site was prepared by hydrogen reduction photoanode deposition method. Due to the high matching of the spatial loading positions of FeCoPi and OVs with the photogenerated charge distribution of Bi4NbO8Cl and corresponding reaction mechanisms of substrate, the FeCoPi and OVs on the (001) and (010) crystal planes of Bi4NbO8Cl photocatalyst provided surface active site for water oxidation reaction and electron shuttle reaction (Fe3+/Fe2+), respectively. Under visible light irradiation, the evolution O2 rate of FeCoPi/Bi4NbO8Cl OVs was 16.8 μmol h−1, as 32.9 times as Bi4NbO8Cl. Furthermore, a hydrogen evolution co-catalyst PtRu@Cr2O3 was prepared by sequential photodeposition method. Due to the introduction of Ru, the Schottky barrier between PbTiO3 and Pt was effectively reduced, which promoted the transfer of photogenerated electrons to PtRu@Cr2O3 thermodynamically, the evolution H2 rate on PtRu@Cr2O3/PbTiO3 increased to 664.8 times. On based of the synchronous enhancement of the water oxidation performance on FeCoPi/Bi4NbO8Cl-OVs and water reduction performance on PtRu@Cr2O3/PbTiO3, a novel Z - Scheme photocatalytic overall water splitting system (FeCoPi/Bi4NbO8Cl-OVs) mediated by Fe3+/Fe2+ had successfully constructed. Under visible light irradiation, the evolution rates of H2 and O2 were 2.5 and 1.3 μmol h−1, respectively. This work can provide some reference for the design of active site and the controllable synthesis of OVs spatial position. On the other hand, the hydrogen evolution co catalyst (PtRu@Cr2O3) and the co catalyst FeCoPi for oxygen evolution contributed to the construction of an overall water splitting system.
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
miracle完成签到 ,获得积分10
刚刚
sss发布了新的文献求助10
6秒前
华桦子完成签到 ,获得积分10
8秒前
凌灵翎完成签到,获得积分10
10秒前
lenon完成签到,获得积分10
11秒前
思源应助sss采纳,获得10
21秒前
26秒前
31秒前
欣喜的以丹完成签到,获得积分10
37秒前
一D发布了新的文献求助10
40秒前
muhum完成签到 ,获得积分10
46秒前
实验大牛完成签到,获得积分10
49秒前
852应助scholar丨崔采纳,获得10
1分钟前
1分钟前
一D完成签到,获得积分10
1分钟前
儒雅致远发布了新的文献求助10
1分钟前
YiPeng完成签到,获得积分10
1分钟前
1分钟前
核桃发布了新的文献求助10
1分钟前
桐桐应助儒雅致远采纳,获得10
1分钟前
核桃完成签到,获得积分0
1分钟前
排骨大王完成签到,获得积分10
1分钟前
1分钟前
joker完成签到 ,获得积分10
1分钟前
核桃发布了新的文献求助100
1分钟前
1分钟前
温暖元容完成签到,获得积分10
1分钟前
scholar丨崔发布了新的文献求助10
1分钟前
1分钟前
淡定的彩虹完成签到,获得积分10
1分钟前
1分钟前
sss发布了新的文献求助10
2分钟前
2分钟前
情怀应助科研通管家采纳,获得10
2分钟前
2分钟前
卡卡完成签到 ,获得积分10
2分钟前
CNY完成签到 ,获得积分10
2分钟前
赘婿应助_ban采纳,获得10
2分钟前
2分钟前
bksqc发布了新的文献求助10
2分钟前
高分求助中
The Mother of All Tableaux: Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 3000
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
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 3990020
求助须知:如何正确求助?哪些是违规求助? 3532077
关于积分的说明 11256276
捐赠科研通 3270943
什么是DOI,文献DOI怎么找? 1805139
邀请新用户注册赠送积分活动 882270
科研通“疑难数据库(出版商)”最低求助积分说明 809228