Markedly enhanced hydrogen production in wastewater via ammonia-mediated metal oxyhydroxides active sites on bifunctional electrocatalysts

双功能 材料科学 废水 制氢 氨生产 金属 无机化学 化学工程 废物管理 催化作用 冶金 有机化学 化学 工程类
作者
Yingzhen Zhang,Denglong Ma,Yonggang Lei,Tianxue Zhu,Jun Hu,Yu Tang,Zhong Chen,Jianying Huang,Yuekun Lai,Zhiqun Lin
出处
期刊:Nano Energy [Elsevier BV]
卷期号:117: 108896-108896 被引量:12
标识
DOI:10.1016/j.nanoen.2023.108896
摘要

The ability to substitute oxygen evolution reaction (OER) in water splitting with ammonia oxidation reaction (AOR) represents an important endeavor in producing high-purity hydrogen with the lowered energy consumption. Due to the reduced overpotential of AOR over OER and preventing the hydrogen and oxygen mixing and thus possible explosion. Herein, we report the substitution of slow-kinetics OER with AOR to effectively boost hydrogen evolution reaction (HER) of wastewater electrolysis, thereby rendering energy saving as well as decontamination of ammonia (NH3) in wastewater. Three-dimensional CoS@NiCu electrodeposited on Ni foam is employed as self-supporting bifunctional electrocatalysts for both AOR and HER. The XPS and in-situ Raman studies reveal the generation of electrocatalytically active cobalt oxyhydroxide (CoOOH) on CoS@NiCu during the course of AOR. Interestingly, the density functional theory (DFT) calculation unveils that NH3 preferentially adsorbing on the surface of electrocatalyst prolongs the Co-S bond length, thus promoting the bond cleavage and accelerating the formation of active CoOOH species. Moreover, the rate-determining step of AOR according to the Gerischer-Mauerer (G-M) mechanism only has a 1.79 eV energy barrier to overcome. The electrochemical impedance spectroscopy investigation suggests that the AOR enables an enhanced interfacial charge transfer. As such, the hydrogen evolution rate of the AOR-HER system reaches 41.9 μmol h−1, representing 3.2-fold increase in hydrogen production over the conventional OER-HER water splitting. This study highlights a promising perspective of integrating AOR with HER to synergize efficient hydrogen production.
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
量子星尘发布了新的文献求助10
2秒前
3秒前
张大英发布了新的文献求助10
5秒前
马er完成签到,获得积分20
5秒前
奮斗完成签到,获得积分10
5秒前
戴岱完成签到,获得积分10
6秒前
哈哈鹿发布了新的文献求助10
7秒前
7秒前
黎明森完成签到,获得积分10
7秒前
Monica应助朴素若枫采纳,获得30
8秒前
9秒前
科研通AI5应助科研通管家采纳,获得10
9秒前
SYLH应助科研通管家采纳,获得30
9秒前
9秒前
czh应助科研通管家采纳,获得10
9秒前
科研通AI2S应助科研通管家采纳,获得10
9秒前
9秒前
今后应助科研通管家采纳,获得10
9秒前
顾矜应助科研通管家采纳,获得10
9秒前
9秒前
丘比特应助科研通管家采纳,获得10
9秒前
赘婿应助科研通管家采纳,获得10
9秒前
9秒前
9秒前
9秒前
王羊补牢发布了新的文献求助10
12秒前
布施德完成签到 ,获得积分10
13秒前
Zzz完成签到,获得积分10
14秒前
呆萌板凳完成签到,获得积分20
16秒前
17秒前
18秒前
哈哈鹿完成签到,获得积分10
18秒前
SS完成签到,获得积分20
19秒前
华仔应助t团子采纳,获得10
22秒前
23秒前
Yang发布了新的文献求助10
24秒前
zty完成签到,获得积分10
26秒前
28秒前
小束爱吃樱桃完成签到 ,获得积分10
29秒前
静静小可爱完成签到,获得积分10
31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 3989242
求助须知:如何正确求助?哪些是违规求助? 3531393
关于积分的说明 11253753
捐赠科研通 3270010
什么是DOI,文献DOI怎么找? 1804868
邀请新用户注册赠送积分活动 882084
科研通“疑难数据库(出版商)”最低求助积分说明 809136