多孔氮化碳纳米片的合成及其光解水性能研究  

Preparation of Porous Carbon Nitride Nanosheets and Study on Its PhotocatalyticWater Splitting Performance

作　　者：李国盛 邹晓琦 刘汝佳 高志聪 潘楠 黄丁丁 Li Guosheng;Zou Xiaoqi;Liu Rujia;Gao Zhicong;Pan Nan;Huang Dingding(School of Environmental and Chemical Engineering,Zhaoqing University,Zhaoqing 526061;State Key Laboratory of Photocatalysis on Energy and Environment,Fuzhou University,Fuzhou 350116;Provincial Key Laboratory of Environmental Health and Land Resource,Zhaoqing University,Zhaoqing 526061,China)

机构地区：[1]肇庆学院环境与化学工程学院,广东肇庆526061 [2]福州大学能源与环境光催化国家重点实验室,福建福州350116 [3]广东省环境健康与资源利用重点实验室,广东肇庆526061

出　　处：《广东化工》2023年第22期4-7,共4页Guangdong Chemical Industry

基　　金：大学生创新创业训练计划项目(S202110580061);肇庆市科技创新指导类项目(2022040302001);肇庆学院科研基金项目(QN202118);广东省环境健康与资源利用重点实验室编号(2020B121201014);广东省科技创新战略专项资金(“攀登计划”专项资金,pdjh2023b0567);福州大学能源与环境光催化国家重点实验室开放课题(SKLPEE KF202209);广东省普通高校青年创新人才类项目(2023KQNCX088)。

摘　　要：氮化碳光催化剂存在着比表面积较小、传质作用较差、光生电荷复合严重等问题,导致其光催化效率较低。基于上述原因,本研究开发了一种新颖的多孔氮化碳纳米片合成方法,通过将氮化碳前驱体与生物大分子环糊精进行水热自组装后煅烧,合成了具有多孔结构的氮化碳纳米片。通过一系列表征测试结果表明,所合成的氮化碳纳米片具有较高的比表面积,较强的光生电荷分离和迁移效率,因而表现出更高的光催化分解水制氢性能。Carbon nitride photocatalysts have some problems,such as small surface area,poor mass transfer and serious photogenerated charge recombination,which lead to low photocatalytic efficiency.Based on the above reasons,a novel synthesis method of carbon nitride nanosheets was developed in this study.Carbon nitride nanosheets with porous structure were synthesized by calcination of carbon nitride precursor and biolecular cyclodextrin after hydrothermal self-assembly.A series of characterization tests showed that the synthesized carbon nitride nanosheets had higher surface area,better photogenic charge separation and migration efficiency,so showed a higher photocatalytic performance of water splitting to produce hydrogen.

关 键 词：氮化碳 光催化 多孔纳米片 光解水制氢 

分 类 号：TQ316.6[化学工程—高聚物工业]