摘要
CO_(2)capture and conversion has been prospected as an auspicious technology to simultaneously tackle the rise in global CO_(2)emission and produce valueadded fuels with the goal of accomplishing carbon neutrality.A sustainable route to achieve this is via the utilization of solar energy,thereby harnessing the abundant and nonexhaustive resource to shift our reliance away from rapidly depleting fossil fuels.Graphitic carbon nitride(g-C_(3)N_(4))and its allotrope have earned its rank as a fascinating metal-free photocatalyst due to its superior stability,high surface-area-to-volume ratio,and tunable surface engineering.By leveraging these properties,robust carbon nitride-based nanostructures are engineered for photocatalytic CO_(2)conversion to energy-rich C_(1)-C_(2) product,which is indispensable in the chemical industry.Thus,this review presents the latest panorama of experimental and computational research on tuning the local electronic,surface chemical coordination environment,charge dynamics and optical properties of low-dimensional carbon nitride and its allotropes toward highly selective and efficient CO_(2)photoconversion.To name a few,structural engineering,point-defect engineering,heterojunction construction,and cocatalyst loading.To advance this frontier,critical insights are elucidated to establish the structure-performance relationship and unravel primary factors dictating the selectivity of C_(1)-C_(2) molecules from CO_(2)reduction.External-field assisted photocatalysis such as with electric(photoelectro-)and heat(photothermal)is discussed to uncover the synergistic contributions that drive the development in photochemistry.Last,future challenges and prospects are outlined for the potential application of solar-driven CO_(2)conversion,along with the scale-up strategy from the economic viewpoint toward the rational development of high-efficiency carbon nitride catalysts.
出处
《InfoMat》
SCIE
CAS
2022年第1期40-104,共65页
信息材料（英文）
基金
support provided by the Ministry of Higher Education(MOHE)Malaysia under the Fundamental Research Grant Scheme(FRGS)(Ref no:FRGS/1/2020/TK0/XMU/02/1)
This work is also funded by Xiamen University Malaysia Investigatorship Grant(Grant no:IENG/0038)
Xiamen University Malaysia Research Fund(XMUMRF/2021-C8/IENG/0041 and XMUMRF/2019-C3/IENG/0013)
Hengyuan International Sdn.Bhd.(Grant no:EENG/0003).
作者简介
Correspondence:Wee-Jun Ong,received his BE and PhD in Chemical Engineering from Monash University.He is an Associate Professor in School of Energy and Chemical Engineering at Xiamen Uni-versity Malaysia.Starting from 2021,he becomes a Director of“CONNECT”research center.Previously,he was a scientist at Agency for Science,Technology and Research(A*STAR),Singapore.In 2019,he was a visiting scientist at Techni-sche Universität Dresden and a visiting professor at Lawrence Berkeley National Laboratory.His research interests include nanomaterials for energy storage devices,photocatalytic,photoelectrocatalytic,and electrochemical H_(2)O splitting,CO_(2)reduction and N_(2)fixation.For more details,refer to https://sites.google.com/site/wjongresearch/.School of Energy and Chemical Engineering,Xiamen University Malaysia,Sepang,Selangor 43900,Malaysia.Email:weejun.ong@xmu.edu.my,ongweejun@gmail.com,ORCID:https://orcid.org/0000-0002-5124-1934;Sue-Faye Ng received her Bachelor of Chemical Engineering with Honors from Xiamen University,Malaysia in 2021.She is currently a postgraduate student under the supervision of Prof.Dr.Wee-Jun Ong.In 2019,she participated in the Chemical Engineering Student Exchange Program and was a visiting scholar in Professor Nanfeng Zheng's group at College of Chemistry and Chemical Engineering,Xiamen University,China.Her current research interest includes the design of nanostructured photocatalysts for CO_(2)reduction,hydrogen evolution and oxygen evolution reaction to imitate natural photosynthesis,as well as electrocatalysts for battery design;Joel Jie Foo is currently a Master candidate supervised by Prof.Wee-Jun Ong at Xiamen University Malalysia.In 2019,he had been to College of Energy in Xiamen University,China for 3-month student exchange program.His research interests focuses on the synthesis of 2D nanomaterials for solar-to-fuel conversion.
