One-pot synthesis of porous graphitic carbon nitride with rich nitrogen vacancies and oxygen heteroatoms for boosting photocatalytic performance
文献类型： 外文期刊
作者： Liu, Zhaoliang 1 ; Li, Cunjun 1 ; Jiao, Yongsi 1 ; Liu, Yuxue 4 ; Wang, Linjiang 1 ; Xu, Yanqi 1 ;
作者机构： 1.Guilin Univ Technol, Coll Mat Sci & Engn, Guilin 541004, Peoples R China
2.Guilin Univ Technol, Minist Educ, Key Lab New Technol Proc Nonferrous Met & Mat, Guilin 541004, Peoples R China
3.Guilin Univ Technol, Collaborat Innovat Ctr Explorat Nonferrous Met Dep, Guilin 541004, Peoples R China
4.Zhejiang Acad Agr Sci, Inst Environm Resource Soil & Fertilizer, Hangzhou 310021, Peoples R China
5.Zhejiang Acad Agr Sci, State Key Lab Managing Biot & Chem Threats Qual &, Hangzhou 310021, Peoples R China
关键词： Graphitic carbon nitride; Photocatalysis; Nitrogen vacancy; Oxygen heteroatom
期刊名称：OPTICAL MATERIALS （ 影响因子：3.9； 五年影响因子：3.3 ）
ISSN： 0925-3467
年卷期： 2023 年 139 卷
页码：
收录情况： SCI
摘要： Graphitic carbon nitride (g-C3N4), as an attractive photocatalyst, has been applied in environmental pollution control and energy conversion. However, its photocatalytic performance was plagued owing to the insufficient light absorption and poor photocarrier separation and transportation efficiencies. Herein, a porous g-C3N4 with rich nitrogen vacancies and oxygen heteroatoms was fabricated using a one-pot thermal polymerization method. Such method involves molecular homogenization of urea and ammonium bicarbonate, recrystallization of urea, and subsequent polycondensation and thermal stripping of g-C3N4 lamellas. The resultant g-C3N4 presents enriched exposed edges and interconnected open diffusion channels, and possesses abundant nitrogen vacancies and oxygen heteroatoms. This unique structure and composition of g-C3N4 contribute to exposure of active sites, migration of substrate and products, and visible light absorption in photocatalytic reactions. As expected, the design of nitrogen vacancies and oxygen heteroatoms in g-C3N4 modulated its electronic structure, thereby accelerating the photocarrier separation and further accelerating the output of center dot O-2(-) radicals under light irradiation. The optimal g-C3N4 exhibited an extraordinary photodegradation performance for high concentration (C-0 = 50 mg/L) of Rhodamine B. The photodegradation efficiencies are 97.5% and 99% in 90 min under visible light and sunlight irradiation, respectively. The work provides a porous g-C3N4 photocatalyst with intensified photocatalytic performance for environmental pollution control and emerging energy conversion.
- 相关文献
作者其他论文 更多>>
-
Novel N-functionalized tourmaline/pomelo peel biochar composite: preparation, characteristics, and mechanisms in adsorbing Pb2+
作者：Liu, Yihuan;Liu, Yuxue;Liu, Yihuan;Chen, Yaoning;Zhao, Mengyang;Liu, Yihuan;Chen, Yaoning;Zhao, Mengyang;Li, Yuanping
关键词：Nitrogen doping; Tourmaline; Biochar composite; Pb 2+adsorption; Soil remediation
-
One-step microwave method synthesis of N, S-codoped carbon with the frustrated Lewis pairs for Cr (VI) removal
作者：Wang, Liwen;Sha, Yixin;Bi, Changjun;Lin, Daoqing;Wang, Xiaozhi;Jrar, Jawad Ahmad;Hou, Jianhua;Liu, Yuxue;Wang, Xiaozhi;Lin, Hui;Dai, Lichun;Hou, Jianhua
关键词：Cr(VI) reduction; Microwave; Co-doping carbon; Frustrated-Lewis-pair; Absorption
-
Insect residual streams supplement improves chili pepper growth: Insights into the role of rhizosphere soil microbiome and metabolome
作者：Zhou, Hanghai;Zheng, Xusong;Shen, Qi;Yao, Xiaohong;Sun, Hong;Wang, Xin;Wu, Yifei;Tang, Jiangwu;Zhu, Zhigang;Yang, Chenghu;Li, Hua;Liu, Yuxue;Jiang, Lijia;Zhang, Chunfang
关键词：Insect farming; Insect residual stream; Chili pepper; Plant growth; Rhizosphere microbial community; Metabolic profile
-
Preparation of nitrogen-doped bagasse-derived biochar with outstanding methylene blue adsorption performance
作者：Cai, Faming;Li, Cunjun;Wang, Linjiang;Liu, Yuxue;Cai, Faming;Yang, Chenghu;Wang, Yuying;Zhou, Hanghai;Yang, Shengmao;Tang, Jiangwu;Liu, Yuxue;Li, Cunjun;Wang, Linjiang;Wang, Yuying;Yang, Shengmao;Liu, Yuxue
关键词：Carbon-based material; Porous structure; Nitrogen doping; Chemical activation; Organic dyes; Adsorption mechanism
-
The effect of [Br/Zn] content on the structure and photocatalytic performance of BiOBr/ZnO based composite coatings on NiO/Ni foam
作者：Li, Dayu;Li, Longfei;Liu, Yuxue;Lin, Hui;Wang, Yichen;Zhang, Yongcai;Wang, Yichen;Li, Hongbin;Hou, Zhenhua;Asghar, Zeeshan;Hou, Jianhua
关键词：BiOBr/ZnO composite; Solvothermal synthesis method; Nickel foam; Coating
-
Behavior and mechanism of perfluorooctane sulfonate (PFOS) removal from wastewater samples using bamboo powder biochar
作者：Liu, Yufei;Zhang, Anping;Sun, Jianqiang;Liu, Yuxue;Liu, Yufei;Liu, Yihuan;Yang, Chenghu;Wang, Yuying;Zhou, Hanghai;Yang, Shengmao;Tang, Jiangwu;Liu, Yuxue;Wang, Yuying;Yang, Shengmao;Liu, Yuxue
关键词：Emerging contaminants; PFASs; Carbon-based material; Adsorption behavior; Environmental remediation; Persistent free radicals
-
A rapid microwave-assisted technique to synthesize micro-mesoporous biochar intercalated with Zn2+for efficient removal of Cr(VI)
作者：Wang, Yuning;Zhuo, Zhao;Yin, Jin;Fang, Liang;Bilal, Muhammad;Wang, Xiaozhi;Hou, Jianhua;Bilal, Muhammad;Liu, Yuxue;Lin, Hui;Wang, Yuying;Wang, Xiaozhi;Hou, Jianhua
关键词：Biochar; ZnCl 2; Hierarchical porous structure; Hexavalent chromium
