Surfaces and Interfaces
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2024
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IF 5.7
Wenxu Zhang,Wei Li,Huixing Yang,Linlin Hou,Yongzhuo Yu,Yangyang Jiang,Chaoyu Lv,Yuxin Huang
We propose a potential solution to the problem of severe recombination of photogenerated electron-hole pairs in composite catalysts. The g-C 3 N 5 has better electronic properties and photocatalytic efficiency than g-C 3 N 4 , and In 2.77 S 4 is a typically sulfur-deficient sulfide with stable structure and strong visible light absorption. However, the In 2.77 S 4 /g-C 3 N 5 composite catalyst has severe recombination of photogenerated electron-hole pairs, which limits its performance. To solve this problem, we introduced NCDs (nitrogen-doped carbon dots) into g-C 3 N 5 to prepare hybrid material, which subsequently combined with In 2.77 S 4 . The high-efficiency S-scheme In 2.77 S 4 /NCDs-(g-C 3 N 5 ) heterojunction was prepared by electrostatic self-assembly to prevent the thermal decomposition of g-C 3 N 5 . Photocatalytic experiments show that In 2.77 S 4 /NCDs-(g-C 3 N 5 ) composite has excellent photodegradation efficiency of rhodamine B (94.23 %), high photocatalytic H 2 production (7134 μmol·g −1 h −1 ), and good reusability in the visible light. The H 2 evolution rate of In 2.77 S 4 /NCDs-(g-C 3 N 5 ) composite is about 30.10, 3.89 and 3.08 folds than In 2.77 S 4 , g-C 3 N 5 and In 2.77 S 4 /g-C 3 N 5 , respectively. The photoluminescence spectroscopy (PL) and the time-resolved fluorescence decay (TRF) indicated a substantial reduction in photogenerated carrier recombination of In 2.77 S 4 /NCDs-(g-C 3 N 5 ) compared to In 2.77 S 4 /g-C 3 N 5 . Taking advantage of the high conductivity of NCDs , the electron-highways were constructed in heterojunctions, which accelerates the interfacial depletion of useless electron-hole pairs and reserved more strong redox carriers. In addition, we inferred a possible energy band structure for In 2.77 S 4 /NCDs-(g-C 3 N 5 ) heterojunction based on the energy band bending theory. This work provides an expandable idea for improving the utilization efficiency of photogenerated carriers by constructing electron-highways in heterojunctions.
研究领域:
材料科学
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环境科学
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化学
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Cai-Wu Luo,Liang Jiang,Sen-Ping Mao,Chao Xie,Deng-Gao Huang,Tian-Jiao Jiang
The metal-nitrogen-carbon materials are considered as ideal candidates for activating peroxydisulfate (PDS) to remove organic pollutants in wastewater. However, the bimetallic oxides supported g-C 3 N 5 with nitrogen vacancies (Nvs) is little reported. In this work, a novel CuMn/g-C 3 N 5 -Nvs composite was fabricated by a simple method and then applied for the activation of PDS to degrade tetracycline (TC). A series of characterization results revealed that the the bimetallic CuMn oxides was successfully loaded onto the surface of g-C 3 N 5 , enriching catalytic active sites and forming more Nvs. The preparation of catalyst and related reaction conditions were systematically evaluated. The results showed that the degradation efficiency of TC by CuMn/g-C 3 N 5 -Nvs was 21 and 46 times higher than that of CuMnO x and g-C 3 N 5 . This enhancement was attributed to the synergistic effect among Cu and Mn ions, and Nvs in the CuMn/g-C 3 N 5 -Nvs. Furthermore, this catalyst exhibited a good stability. The quenching and electron spin resonance experiments confirmed that the TC removal was occurred through the co-existence of radical and non-radical pathways. Additionally, the biological toxicity tests demonstrated that its toxicity significantly decreased after treatment by the CuMn/g-C 3 N 5 -Nvs/PDS system. Overall, this work provided a feasible approach for constructing the composite containing Nvs and highlighted the potential treating process for environmental remediation.
研究领域:
环境科学
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材料科学
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 46
·期 24
·11840-11850
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IF 3.925
Dongying Zhu,Zhujun Huang,Haiyan Wang,Qiujun Lu,Guihua Ruan,Chenxi Zhao,Fuyou Du
The fabrication of sustainable and reusable photocatalyst materials is urgent and desirable for the removal of emerging pharmaceutical pollutants (EPPs) in environmental water samples. In this work, we described the fabrication of electrospun nitrogen-rich carbon nitrides/MIL-101(Fe)/poly(acrylonitrile-co-maleic acid) nanofibers (E-spun g-C3N5/MIL-101(Fe)/PANCMA NFs) by using electrospinning dispersion solutions of g-C3N5/MIL-101(Fe) and PANCMA, as well as their applications as sustainable and reusable photocatalysts toward a model EPP carbamazepine degradation under light irradiation. The E-spun g-C3N5/MIL-101(Fe)/PANCMA NFs exhibited the highest carbamazepine degradation efficiency of 94.2% within 40 min. The O2˙−, ˙OH, and h+ reactive species all participated in the photodegradation process, and some degradation byproducts of carbamazepine were identified by liquid chromatography-mass spectrometry. Importantly, the electrospun photocatalyst possessed high reusability (at least 15 consecutive runs) and wide applications in the degradation of other EPPs (such as tetracycline and ciprofloxacin), which suggested the great potential of the electrospun photocatalytical nanofibers in the EPPs removal.
研究领域:
环境科学
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材料科学
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药学
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Wenlin Wang,Xianling Wang,Gang Li,Xiuting Wu,Qian Yu,Yan Wang,Xinjie Zhao,Jia Gao,Jing Wang
The design of heterojunction and active crystal face is an effective way to promote the separation and migration of photogenerated charge in the process of photocatalytic reaction. In this work, the band gap intercalation Bi 3 O 4 Br/Bi 2 O 2 CO 3 /g-C 3 N 5 (BBC) ternary photocatalyst was successfully designed by one step hydrothermal method. It is found that under alkaline conditions, the addition of g-C 3 N 5 to Bi 3 O 4 Br leads to the preferential growth of the (0 0 1) crystal face of the third phase Bi 2 O 2 CO 3 , and the (0 0 1) crystal face is the active crystal face of the photocatalytic reaction. In addition, the constructed double Z-scheme heterojunction has two different electron transport pathways and bidirectional interface electric fields, which reduces the electron-hole pair recombination rate, maintains a strong redox ability, and enables the photogenerated carrier to effectively separate and transfer, thus improving the catalytic activity of the material. Under visible light irradiation, 15 %BBC presented excellent catalytic activity, the degradation rates of ARB ( k = 0.0238 min −1 ), HCl-TC ( k = 0.0183 min −1 ) and RHB ( k = 0.0200 min −1 ) exceeded 90 % within 120 min. This work is not only of great significance for the purification of water pollution, but also provides a new way for further exploration of novel composite photocatalytic systems.
研究领域:
材料科学
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环境科学
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化学工程
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DOI
PubMed
高影响因子
DIAMOND AND RELATED MATERIALS
·
2025
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IF 5.1
Liu Ouyang,Huihu Wang,Lizhong Duan,Jingle Zhang,Shenghao Jiang,Yu Xiong,Chenhuinan Wei,Xing Xiang,Yun Zhao,Qianyu Wang
Tetracycline (TC), a widely detected aquatic pollutant, poses significant ecological risks, necessitating the development of effective remediation strategies. Photocatalytic degradation, which converts TC into harmless CO 2 and H 2 O, offers a promising eco-friendly solution. This study successfully synthesized a novel 2D/3D g-C 3 N 5 /BiVO 4 (N-CN/BiVO 4 ) S-scheme heterojunction via a hydrothermal method. The optimized 5 % N-CN/BiVO 4 exhibited exceptional performance in activating the Fe 2+ /PMS system under visible light, achieving a 96.8 % TC removal efficiency with an apparent rate constant 4.4 times higher than that of BiVO 4 . Mechanistic studies, including ultraviolet photoelectron spectroscopy (UPS) and valence band X-ray photoelectron spectroscopy (VB-XPS), confirmed the S-scheme interfacial charge transfer pathway. Furthermore, radical quenching experiments revealed that the enhanced photocatalytic activity originated from the synergistic contribution of multiple reactive species ( OH, SO 4 − , O 2 − , h + , and 1 O 2 ), validating both the efficient activation of Fe 2+ /PMS and the proposed S-scheme charge transfer mechanism. This work presents an innovative approach for high-performance pollutant degradation by coupling an S-scheme heterojunction with the Fe 2+ /PMS activation system.
研究领域:
环境科学
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光催化
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水污染修复
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材料科学
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化学工程
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
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IF 5.6
Xiaoyou Cui,Xinnan Kang,Chuhan Zhang,Yanan Gao,Yajie Wang,Bin Liu
To address the critical bottlenecks of low carrier separation efficiency and insufficient redox potential in nitrogen-rich graphitic carbon nitride (g-C 3 N 5 ), this study developed an environmentally friendly MoO 3-x /CN composite material enriched with oxygen vacancies via a synergistic hydrothermal-calcination protocol. In photocatalytic degradation experiments, the MoO 3-x /CN-0.5 composite exhibited ultra-rapid degradation kinetics and broad-spectrum applicability, achieving degradation rates of 86.91 % for methyl orange (MO), 81.92 % for methylene blue (MB) and 97.11 % for rhodamine B (RhB) within 10 min, significantly outperforming other reported photocatalysts. Distinguishing from other photocatalysts, the exceptional photocatalytic degradation efficiency and broad-spectrum applicability of the MoO 3-x /CN-0.5 composite originate from three synergistic factors: enhanced visible-light absorption, a rationally designed Z-scheme heterojunction, and N-Mo bonds at the phase interface. These structural features synergistically enable efficient electron-hole pairs dissociation, improve the material's redox capability, and preserve structural integrity. This work provides a facile strategy for the controlled synthesis of g-C 3 N 5 -based heterojunctions and expands their application potential for highly efficient photocatalytic degradation.
研究领域:
材料科学
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环境科学
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光催化
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纳米技术
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化学工程
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DOI
高影响因子
Small
·
2024
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IF 13
Yongzhuo Yu,Wei Li,Yuxin Huang,Huixing Yang,Chaoyu Lv,Hui xiang Yan,Di Lin,Shichao Jiao,Linlin Hou,Zhiliang Wu
Inspired by energy conversion and waste reuse, hybridized Ni-MOF derivative-CdS-DETA/g-C 3 N 5 , a type-II heterojunction photocatalyst, is synthesized by a hydrothermal method for simultaneous and highly efficient photocatalytic degradation and hydrogen evolution in dye wastewater. Without the addition of cocatalysts and sacrificial agents, the optimal MOF-CD(2)/CN5 (i.e. Ni-MOF derivative-CdS-DETA (20 wt.%)/g-C 3 N 5 ) exhibit good bifunctional catalytic activity, with a H 2 evolution rate of 2974.4 µmol g −1 h −1 during the degradation of rhodamine B (RhB), and a removal rate of 99.97% for RhB. In the process of H 2 -evolution-only, triethanolamine is used as a sacrificial agent, exhibiting a high H 2 evolution rate (19663.1 µmol g −1 h −1 ) in the absence of a cocatalyst, and outperforming most similar related materials (such as MOF/g-C 3 N 5 , MOF-CdS, CdS/g-C 3 N 5 ). With the help of type-II heterojunction, holes are scavenged for the oxidative degradation of RhB, and electrons are used in the decomposition of water for H 2 evolution during illumination. This work opens a new path for photocatalysts with dual functions of simultaneous efficient degradation and hydrogen evolution.
研究领域:
材料科学
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环境科学
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化学
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DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2024
·Vol. 13
·期 1
·295-305
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IF 5.7
Yanan Gao,Jingjing Wang,Jingxuan Yang,Yajie Wang,Wenjuan Tian,Bin Liu
Nitrogen-rich graphitic carbon nitride (g-C3N5) has garnered significant attention in photocatalytic hydrogen production due to its unique physicochemical properties. However, g-C3N5 faces persistent challenges stemming from rapid carrier recombination. In this study, we successfully synthesized a Pd/C3N5-K,I photocatalyst through sequential doping of non-metallic heteroatoms and metal nanoparticles. The Pd/C3N5-K,I photocatalyst demonstrates a remarkable enhancement in the photocatalytic H2 evolution rate (2.9 mmol g−1 h−1), approximately 14 times higher than that of pure g-C3N5 (0.2 mmol g−1 h−1). Characterization and calculation analyses reveal that iodine doping into the g-C3N5 skeleton leads to the formation of planar C–I bonds, facilitating C3N5 layer electron–hole pair separation. The subsequent insertion of Pd nanoparticles between the layers leads to electron accumulation on C3N5-K,I, while resulting in hole concentration on Pd nanoparticles, thereby facilitating thorough spatial separation of electron–hole pairs. The strategic co-doping of iodine and palladium nanoparticles effectively restrains carrier recombination of g-C3N5 by connecting intra- and inter-layer interactions. This study constitutes a novel conceptual framework for CN-based photocatalysts, offering a promising approach to improve their performance in hydrogen production applications.
研究领域:
材料科学
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能源科学
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DOI
高影响因子
CATALYSIS LETTERS
·
2026
·Vol. 156
·期 4
·95
·
IF 2.5
Tang Zhanqiu,Fu Yuqing,Feng Xinyi,Wu Zhenglong,Qin Weidong
Enantioselective catalytic oxidation of d -glucose has been extensively applied in food, pharmaceutical, and chemical industries. In this work, a nitrogen-rich graphitic carbon nitride ( g- C 3 N 5 ) was synthesized through the pyrolysis of 3-amino-1,2,4-triazole. This material exhibited a reduced band gap, enhanced electrical conductivity, and superior photocatalytic performance compared to graphitic C 3 N 4 ( g- C 3 N 4 ), facilitating more efficient photocatalytic oxidation of glucose with higher yield. The surface of g- C 3 N 5 was subsequently capped with a molecularly imprinted polymer (MIP) layer by employing d -glucose as the template molecule, and 4-vinylphenylboronic acid as the functional monomer. The resulting g- C 3 N 5 -MIPs demonstrated the ability to selectively photocatalyze the oxidation of d -glucose, producing d -glu acid and H 2 O 2 . Notably, the relative selectivity coefficient for d -glucose over l -glucose increased by a factor of 8.79 compared to the non-imprinted g- C 3 N 5 . This work presents an effective approach for synthesizing advanced g-C 3 N 5 -MIP-based photocatalysts, and highlights their potential for highly enantioselective aerobic oxidation of d -glucose. Graphical
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2020
·
IF 4.939
Zhanbin Jin,Tingting Wei,Jiayu Huang,Fengyan Li,Yi Yang,Lin Xu
In this work, a novel direct Z-scheme g-C 3 N 5 /Zn 0.5 Cd 0.5 S (CN/ZCS) heterojunction was successfully synthesized. Furthermore, its photocatalytic activity for hydrogen production was also investigated, whose photoluminescence spectrum revealed the charge transfer procedure of g-C 3 N 5 and ZCS. Moreover, the optimized hydrogen production rate of ZCS with 15 wt% of g-C 3 N 5 (15% CN/ZCS) was about 142.8 mmol/h/g and quantum efficiency (Q.E.) was circa 33.7% under 420 nm monochromatic light. Compared with the pure ZCS and ZCS with 2 wt% of Pt, the 15% CN/ZCS composite exhibited considerable improved hydrogen production rate, which was about 20 times and 7 times, respectively. The formation of CN/ZCS composite resulted in faster separation of the photogenerated electron-hole pairs. Our work may supply valuable data for the application of g-C 3 N 5 on photocatalysis .
研究领域:
材料科学
·
光催化
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产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2025
·
IF 7.3
Fujian Tang,Yongde Yao,Shangtong Yang
Nitrogen-rich carbon nitride (g-C 3 N 5 ) nanosheets were modified with polydopamine (PDA) and then incorporated into an epoxy resin (EP) matrix to create a g-C 3 N 5 @PDA modified epoxy (GP/EP) coating. The phase composition, microstructure, and mechanical properties were analyzed using X-ray diffraction, scanning electron microscopy, and nano-indentation. The corrosion behavior was investigated by applying the coating to a steel plate and immersing it in a NaCl solution for 20 days using electrochemical impedance spectroscopy and potentiodynamic polarization tests. Molecular dynamics simulations were also conducted to elucidate the corrosion mechanism. The results indicated that the hardness and elastic modulus of the epoxy coating increased from 0.02 GPa to 0.26 GPa and from 0.92 GPa to 2.90 GPa, respectively, after the modification of g-C 3 N 5 nanosheets with PDA. Additionally, the corrosion current density of the GP/EP-coated steel plate was measured at 0.51 μA/cm 2 , which is approximately 17 times lower than that of the EP-coated plate when immersed in a 3.5 wt% NaCl solution.
研究领域:
材料科学
·
腐蚀与防护
·
表面工程
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DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2026
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IF 9.2
Mengyao Tian,Jinming Ma,Hangyu Xiang,Shen Xu,Jiahao Qi,Yaru Zhang,Tifeng Jiao
Morphological engineering and composite fabrication of graphitic carbon nitride (g-C 3 N 5 ) are effective strategies to suppress photogenerated charge carrier recombination, improve electronic conductivity, and optimize photocatalytic performance. This research significantly enhanced the photocatalytic hydrogen evolution performance of g-C 3 N 5 through morphology regulation and carbon quantum dot (CQDs) compositing strategies. Using 3-amino-1,2,4-triazole as the precursor, thin-layered g-C 3 N 5 is prepared via thermal polymerization and KOH exfoliation, and CQDs are in-situ composited via a hydrothermal method. The optimized g–C 3 N 5 –1.0% composite is a S-Scheme heterojunction, featuring a narrow band gap (2.12 eV), a more negative conduction band position, and excellent charge separation efficiency. Under visible light, it achieves a hydrogen evolution rate of 2.9 mmol/g/h, which is 9.7 times that of pure g-C 3 N 5 , along with good cycling stability. This study provides a feasible strategy for developing high-efficiency non-metallic photocatalysts.
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高影响因子
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