具有0D/2D界面的InOOH/ZnIn_(2)S_(4)空心球S型异质结用于增强光催化CO_(2)转化性能  

Highly Efficient InOOH/ZnIn_(2)S_(4) Hollow Sphere S-Scheme Heterojunction with 0D/2D Interface for Enhancing Photocatalytic CO_(2) Conversion

作　　者：蔡佳星 徐文迪 迟浩强 刘倩 高娃 史丽 刘敬祥 邹志刚[4] 周勇[2,4] Jiaxing Cai;Wendi Xu;Haoqiang Chi;Qian Liu;Wa Gao;Li Shi;Jingxiang Low;Zhigang Zou;Yong Zhou(School of Physical Science and Technology,Tiangong University,Tianjin 300387,China;School of Chemical and Environmental Engineering,Anhui Polytechnic University,Wuhu 241000,Anhui Province,China;State Key Laboratory of Organic Electronics and Information Displays&Institute of Advanced Materials(IAM),Nanjing University of Posts and Telecommunications,Nanjing 210023,China;School of Physics,Jiangsu Key Laboratory of Nanotechnology,Eco-materials and Renewable Energy Research Center(ERERC),National Laboratory of Solid State Microstructures,Collaborative Innovation Center of Advanced Microstructures,Nanjing University,Nanjing 210093,China;Multidisciplinary Platform of Advanced Engineering,Chemical Engineering Discipline,School of Engineering,Monash University Malaysia,Bandar Sunway 47500,Selangor,Malaysia)

机构地区：[1]天津工业大学物理科学与技术学院,天津300387 [2]安徽工业大学化学与环境工程学院,安徽芜湖241000 [3]南京邮电大学有机电子与信息显示国家重点实验室,先进材料研究所(IAM),南京210023 [4]南京大学物理学院,江苏省纳米技术重点实验室,生态材料与可再生能源研究中心,固态微结构国家实验室,先进微结构协同创新中心,南京210093 [5]Multidisciplinary Platform of Advanced Engineering,Chemical Engineering Discipline,School of Engineering,Monash University Malaysia,Bandar Sunway 47500,Selangor,Malaysia

出　　处：《物理化学学报》2024年第11期47-48,共2页Acta Physico-Chimica Sinica

基　　金：国家重点研发计划(2022YFE0126500,2018YFE0208500);国家自然科学基金委员会项目(21972065,22203046,22202152);江苏省科学基金会(BK20220006);合肥微尺度物理科学国家实验室(KF2020006);广东省创新创业团队引进项目(2019ZL08L101);中国高校发展基金(UDF01001159);南京邮电大学有机电子与信息显示国家重点实验室项目(GZR2023010003),南京邮电大学自然科学研究创业人才招聘基金(NY221128)。

摘　　要：S型异质结光催化剂因其能够同时促进光生载流子的分离,并优化光催化剂的还原和氧化能力,而被广泛应用于光催化CO_(2)转化中。尽管S型异质结具有巨大的潜力,但其光催化CO_(2)转化性能仍然有限,这主要是由于其界面光生载流子迁移缓慢和光利用效率差。本文报道了一种具有0D/2D接触界面的InOOH/ZnIn_(2)S_(4)空心球S型异质结,以提高光催化CO_(2)转化性能。具体来说,空心球结构可以允许入射光在光催化剂内进行多重反射,以增强光利用效率。此外,0D/2D接触界面可以促进光生载流子在InOOH/ZnIn_(2)S_(4)空心球S型异质结上的迁移速率。结合原位光照X射线光电子能谱表征和自由基捕获实验,确认了InOOH和ZnIn_(2)S_(4)上光生空穴和电子的空间分离,有利于高效利用光生载流子进行光催化CO_(2)转化。因此,优化后的InOOH/ZnIn_(2)S_(4)展示了比原始ZnIn_(2)S_(4)高出25.8倍的光催化CO_(2)转化性能。本工作展示了一种简单而有效的策略,用于提高S型异质结的界面光电荷载流子迁移和光利用效率。S-scheme heterojunction system represents a highly efficient strategy for photocatalytic applications as it can simultaneously facilitate photogenerated charge carrier separation and enhance the reduction-oxidation potentials of the photocatalyst.Despite its gigantic potential,the photocatalytic CO_(2) conversion efficiency of the S-scheme heterojunction remains limited mainly attributed to the sluggish interfacial charge carrier migration and poor light utilization efficiency.Herein,we prepare an InOOH/ZnIn_(2)S_(4) hollow sphere S-scheme heterojunction with 0D/2D contact interface for enhancing photocatalytic CO_(2) conversion performance.Specifically,the hollow sphere morphology can cause the multireflection of incident light within the photocatalyst leading to enhanced light absorption of the photocatalyst.In addition,the 0D/2D contact interface can facilitate the photogenerated charge carrier migration transfer over the InOOH/ZnIn_(2)S_(4) S-scheme heterojunction.Furthermore,combining in situ irradiated X-ray photoelectron spectroscopy(ISIXPS)characterization and radicals trapping test,it is affirmed the accumulation of photogenerated holes and electrons respectively on InOOH and ZnIn_(2)S_(4),which is beneficial for the effective utilization of photogenerated charge carriers.As a result,the photocatalytic CO_(2) conversion performance of the optimized InOOH/ZnIn_(2)S_(4) is ca.25.8 times higher than that of pristine ZnIn_(2)S_(4).Our reported results demonstrate a facile yet effective strategy for enhancing the interfacial photogenerated charge carrier migration and light utilization efficiency of S-scheme heterojunction.

关 键 词：光催化CO_(2)转化 S型异质结 ZnIn_(2)S_(4) 空心球 接触界面 

分 类 号：O643[理学—物理化学]