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Zhang S, An C, Zhang R, Kong D, Xu D, Zhang S. Template-Free Synthesis of Boron-Doped Graphitic Carbon Nitride Porous Nanotubes for Enhanced Photocatalytic Hydrogen Evolution. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:6453-6462. [PMID: 38466076 DOI: 10.1021/acs.langmuir.3c04029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
The photocatalytic activity of g-C3N4 can be enhanced by improving photoinduced carrier separation and exposing sufficient reactive sites. In this study, we synthesized B-doped porous tubular g-C3N4 (BCNT) using a H3BO3-assisted supramolecular self-template method, wherein H3BO3 helped in B-doping, building a porous structure, and maintaining one-dimensional nanotubes. The tubular structure had an ultrathin tube wall and large aspect ratio, which are conducive to the directional transmission and separation of photogenerated carriers; moreover, the abundant pore structure of the tube wall could fully expose the reactive sites. The introduction of B and the cyano group modulated the bandgap of g-C3N4 and elevated the position of the conduction band, thus enhancing the photoreduction ability and effectively improving the hydrogen evolution performance. Consequently, the hydrogen evolution of BCNT-2 (220.8, 53.2 μmol·h-1) was 1.82 and 1.54 times that of ultrathin g-C3N4 nanosheets (CNN, 121.3, 34.6 μmol·h-1) under simulated sunlight and LED lamp irradiation, respectively. Thus, this work provides in-depth insights into the rational design of one-dimensional g-C3N4 nanotubes with high hydrogen evolution activity under visible irradiation.
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Affiliation(s)
- Shumin Zhang
- Hunan Key Laboratory of Applied Environmental Photocatalysis, Changsha University, Changsha Hunan Province 410022, People's Republic of China
| | - Changsheng An
- Hunan Key Laboratory of Applied Environmental Photocatalysis, Changsha University, Changsha Hunan Province 410022, People's Republic of China
| | - Rongchao Zhang
- Hunan Key Laboratory of Applied Environmental Photocatalysis, Changsha University, Changsha Hunan Province 410022, People's Republic of China
| | - Dezhi Kong
- Hunan Key Laboratory of Applied Environmental Photocatalysis, Changsha University, Changsha Hunan Province 410022, People's Republic of China
| | - Difa Xu
- Hunan Key Laboratory of Applied Environmental Photocatalysis, Changsha University, Changsha Hunan Province 410022, People's Republic of China
| | - Shiying Zhang
- Hunan Key Laboratory of Applied Environmental Photocatalysis, Changsha University, Changsha Hunan Province 410022, People's Republic of China
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Jing L, Xu Y, Xie M, Li Z, Wu C, Zhao H, Zhong N, Wang J, Wang H, Yan Y, Li H, Hu J. Cyano-Rich g-C 3 N 4 in Photochemistry: Design, Applications, and Prospects. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2304404. [PMID: 37670529 DOI: 10.1002/smll.202304404] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 07/18/2023] [Indexed: 09/07/2023]
Abstract
Cyano-rich g-C3 N4 materials are widely used in various fields of photochemistry due to the very powerful electron-absorbing ability and electron storage function of cyano, as well as its advantages in improving light absorption, adjusting the energy band structure, increasing the polarization rate and electron density in the structure, active site concentration, and promoting oxygen activation ability. Notwithstanding, there is yet a huge knowledge break in the design, preparation, detection, application, and prospect of cyano-rich g-C3 N4 . Accordingly, an overall review is arranged to substantially comprehend the research progress and position of cyano-rich g-C3 N4 materials. An overall overview of the current research position in the synthesis, characterization (determination of their location and quantity), application, and reaction mechanism analysis of cyano-rich g-C3 N4 materials to provide a quantity of novel suggestions for cyano-modified carbon nitride materials' construction is provided. In view of the prevailing challenges and outlooks of cyano-rich g-C3 N4 materials, this paper will purify the growth direction of cyano-rich g-C3 N4 , to achieve a more in-depth exploration and broaden the applications of cyano-rich g-C3 N4 .
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Affiliation(s)
- Liquan Jing
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW, Calgary, Alberta, T2N 1N4, Canada
| | - Yuanguo Xu
- School of Chemistry and Chemical Engineering, School of Pharmacy, Jiangsu University, Zhenjiang, 212013, P. R. China
| | - Meng Xie
- School of Chemistry and Chemical Engineering, School of Pharmacy, Jiangsu University, Zhenjiang, 212013, P. R. China
| | - Zheng Li
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW, Calgary, Alberta, T2N 1N4, Canada
| | - Chongchong Wu
- CNOOC Institute of Chemicals & Advanced Materials (CICM), Beijing, 102200, P. R. China
| | - Heng Zhao
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW, Calgary, Alberta, T2N 1N4, Canada
| | - Na Zhong
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW, Calgary, Alberta, T2N 1N4, Canada
| | - Jiu Wang
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW, Calgary, Alberta, T2N 1N4, Canada
| | - Hui Wang
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW, Calgary, Alberta, T2N 1N4, Canada
| | - Yubo Yan
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW, Calgary, Alberta, T2N 1N4, Canada
- Jiangsu Engineering Laboratory for Environment Functional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai'an, 223300, P. R. China
| | - Huaming Li
- Institute for Energy Research, Jiangsu University, Zhenjiang, 212013, P. R. China
| | - Jinguang Hu
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW, Calgary, Alberta, T2N 1N4, Canada
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Wang Y, Yang H, Lu N, Wang D, Zhu K, Wang Z, Mou L, Zhang Y, Zhao Y, Tao K, Ma F, Peng S. Electrochemical production of hydrogen peroxide by non-noble metal-doped g-C 3N 4 under a neutral electrolyte. NANOSCALE 2023; 15:19148-19158. [PMID: 37938108 DOI: 10.1039/d3nr04307j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Abstract
Electrochemical oxygen reduction (ORR) for the production of clean hydrogen peroxide (H2O2) is an effective alternative to industrial anthraquinone methods. The development of highly active, stable, and 2e- ORR oxygen reduction electrocatalysts while suppressing the competing 4e- ORR pathway is currently the main challenge. Herein, bimetallic doping was successfully achieved based on graphitic carbon nitride (g-C3N4) with the simultaneous introduction of K and Co, whereby 2D porous K-Co/CNNs nanosheets were obtained. The introduction of Co promoted the selectivity for H2O2, while the introduction of K not only promoted the formation of 2D nanosheets of g-C3N4, but also inhibited the ablation of H2O2 by K-Co/CNNs. Electrochemical studies showed that the selectivity of H2O2 in K-Co/CNNs under neutral electrolyte was as high as 97%. After 24 h, the H2O2 accumulation of K-Co/CNNs was as high as 31.7 g L-1. K-Co/CNNs improved the stability of H2O2 by inhibiting the ablation of H2O2, making it a good 2e- ORR catalyst and providing a new research idea for the subsequent preparation of H2O2.
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Affiliation(s)
- Ying Wang
- School of Physical Science and Technology, School of Materials and Energy, Lanzhou University, Lanzhou 730000, China.
| | - Hongcen Yang
- School of Physical Science and Technology, School of Materials and Energy, Lanzhou University, Lanzhou 730000, China.
| | - Niandi Lu
- School of Physical Science and Technology, School of Materials and Energy, Lanzhou University, Lanzhou 730000, China.
| | - Di Wang
- School of Physical Science and Technology, School of Materials and Energy, Lanzhou University, Lanzhou 730000, China.
| | - Kun Zhu
- School of Physical Science and Technology, School of Materials and Energy, Lanzhou University, Lanzhou 730000, China.
| | - Zhixia Wang
- School of Physical Science and Technology, School of Materials and Energy, Lanzhou University, Lanzhou 730000, China.
| | - Lianshan Mou
- School of Physical Science and Technology, School of Materials and Energy, Lanzhou University, Lanzhou 730000, China.
| | - Yan Zhang
- School of Physical Science and Technology, School of Materials and Energy, Lanzhou University, Lanzhou 730000, China.
| | - Yawei Zhao
- School of Physical Science and Technology, School of Materials and Energy, Lanzhou University, Lanzhou 730000, China.
| | - Kun Tao
- School of Physical Science and Technology, School of Materials and Energy, Lanzhou University, Lanzhou 730000, China.
| | - Fei Ma
- School of Physical Science and Technology, School of Materials and Energy, Lanzhou University, Lanzhou 730000, China.
| | - Shanglong Peng
- School of Physical Science and Technology, School of Materials and Energy, Lanzhou University, Lanzhou 730000, China.
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Liu X, Pan X, Qiu Y, Li J, Ma X, Li D. Vacancy-Modified Porous g-C 3N 4 Nanosheets Controlled by Physical Activation for Highly Efficient Visible-Light-Driven Hydrogen Evolution and Organics Degradation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:11294-11303. [PMID: 37534406 DOI: 10.1021/acs.langmuir.3c00993] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/04/2023]
Abstract
As a promising photocatalyst material, g-C3N4 has great application potential in energy production and environmental improvement. In this work, surface-modified g-C3N4 nanosheets with excellent stability and high photocatalytic activity were successfully synthesized by physical steam activation. The charge transfer rate of carbon nitride was improved due to the synergistic effect of nitrogen defect and oxygen doping caused by steam activation. Meanwhile, the specific surface area and pore volume of the optimized sample reached 124.3 m2 g-1 and 0.42 cm3 g-1, respectively, which increased the exposed reaction sites of reactants, enhancing the photocatalytic activity of g-C3N4. In addition, this novel g-C3N4 displayed a great H2 evolution rate of 5889.39 μmol h-1 g-1 with a methylene blue degradation rate up to 6.52 × 10-3 min-1, which was 3.7 and 2.1 times of original g-C3N4, respectively. This study provided a simple and economical method to develop a highly efficient g-C3N4 photocatalyst for solar energy conversion.
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Affiliation(s)
- Xutong Liu
- College of Light Industry Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Xiaosen Pan
- College of Light Industry Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Yujuan Qiu
- College of Light Industry Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Jie Li
- College of Light Industry Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Xiaojun Ma
- College of Light Industry Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Dongna Li
- College of Light Industry Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
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