ACTA PHYSICO-CHIMICA SINICA
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2023
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IF 10.9
Kexin Dong,Chuqi Shen,Ruyu Yan,Yanping Liu,Chunqiang Zhuang,Shijie Li
The escalating presence of pharmaceutical antibiotics in natural water poses an overwhelming threat to the sustainable development of society. Photocatalysis technology stands out as a promising and cutting-edge environmental purification alternative. C 3 N 5 , identified as a distinctive nonprecious nonmetal photocatalyst, holds potential for environmental protection. However, challenges persist originating from the sluggish photoreaction kinetics and severe photo-carrier reunion. Currently, the design of a special S-scheme photosystem proves to be a reliable strategy for obtaining outstanding photocatalysts. In this context, a plasmonic S-scheme photosystem involving Ag/Ag 3 PO 4 /C 3 N 5 was developed through a feasible route. The compactly connected 0D/0D/2D Ag/Ag 3 PO 4 /C 3 N 5 heterostructure, benefitting from the synergy between the plasmonic effect and the S-scheme junction, facilitates the efficient utilization of appreciably reinforced sunlight absorption, effective photo-carrier disassociation, and notable photoredox capacity. Consequently, this system generates •OH and
⋅ O 2 - effectively. Ag/Ag 3 PO 4 /C 3 N 5 demonstrates a superb photocatalytic levofloxacin eradication rate of 0.0362 min −1 , marking a substantial advancement of 24.8, 1.1, and 0.7 folds compared to C 3 N 5 , Ag 3 PO 4 , and Ag 3 PO 4 /C 3 N 5 , respectively. Impressively, Ag/Ag 3 PO 4 /C 3 N 5 delivers remarkable anti-interference performance and reusability. This achievement signifies a significant step toward developing potent C 3 N 5 -involved photosystems for environmental purification. Download: Download high-res image (106KB) Download: Download full-size image
研究领域:
环境科学
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材料科学
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DOI
高影响因子
Surfaces and Interfaces
·
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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DOI
高影响因子
ChemistrySelect
·
2025
·Vol. 10
·期 32
·e03728
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IF 2
Yong Rui Wang,Su Dan Bao,Agula Bao,Zheng Ming Li,Bodeligeteng Huang
Graphical This study develops nitrogen-enriched porous carbon materials using chitosan and g-C 3 N 5 through hydrothermal carbonization and pyrolysis. The optimized adsorbent (S200-6) exhibits a high CO 2 adsorption capacity (3.98 mmol/g at 298 K, 1 bar), large specific surface area (2306 m 2 /g), and excellent selectivity (14.3 for CO 2 /N 2 ). Carbon capture and storage are crucial because of the environmental issues caused by excessive CO 2 emissions. Porous carbon is considered the most promising adsorbent. The precise adjustment of the pore structure and surface active sites of samples is necessary to increase their CO 2 adsorption capacity. In this study, chitosan-based N-doped porous carbon materials were developed using g-C 3 N 5 as the self-sacrificial templating agent and N dopant, respectively, via hydrothermal and pyrolytic activation methods. CO 2 adsorbents possessing a large specific surface area (2084–2450 m 2 /g), microporous structure, and N content were synthesized by varying the hydrothermal temperature and g-C 3 N 5 ratio. The maximum CO 2 adsorption capacity of the highest-performing adsorbent S200-6 was 3.98 mmol/g at 298 K and 1 bar. After 10 CO 2 adsorption and desorption cycles, S200-6 retained 94% of its initial adsorption capacity, indicating its excellent reusable stability. This study demonstrates the feasible preparation of porous carbon materials through a combination of g-C 3 N 5 with hydrothermal and pyrolytic activation methods and reveals the application potential of S200-6 as a CO 2 adsorbent.
研究领域:
环境科学
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材料科学
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化学工程
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纳米技术
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
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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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DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
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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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产品关联
DOI
高影响因子
Nano Materials Science
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2025
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IF 17.9
Diab Khalafallah,Qinfang Zhang
Herein, a hierarchical multicomponent nanocomposite is established by in situ depositing vertically aligned Co-La-S nanoarrays on MXene‒N-rich C 3 N 5 ‒coated nickel foam (NF) by a convenient electrodeposition technique, forming a heterogeneous-structured layer-on-layer Co-La-S/MX-CN electrode for supercapacitors. The intimate-connected heterostructure yields unique hierarchical network architectures and large specific surface area, exposing rich electroactive sites and numerous short electrons/ions diffusion paths to guide Faradaic redox reactions. The conducting MX-CN junction and dense electronic interactions at the interface facilitate the electron transfer dynamics. Benefiting from the synergistic effect of intrinsic compositional and structural characteristics, the free-standing Co-La-S/MX-CN heterostructure electrode exhibits a high specific capacity of 1 016.6 C g −1 (1 848.3 F g −1 ) at 1 A g −1 , remarkable rate performance of ∼673 C g −1 (1 223.6 F g −1 ) at 50 A g −1 , and outstanding capacity retention of 80.2% after 8 000 cycles. Upon integration into an asymmetric hybrid supercapacitor (AHSC) device, the configured Co-La-S/MX-CN//MX-CN realizes an elevated energy density of 86 Wh kg −1 at a power density of 800 W kg −1 . After enduring 15 000 cycles at a higher discharge current (20 A g −1 ), the capacitance retention rate reaches 74.3%, revealing appreciable lifespan stability. This work underscores an attractive approach to exploring low-cost heterogeneous-structured nanomaterials for supercapacitor applications.
研究领域:
材料科学
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电化学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2022
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IF 16.744
Xiaowan Zhang,Dan Li,Mengyuan Li,Peige Qin,Shiping Zhu,Yanmei Gao,Mengyao Mu,Ning Zhang,Youmei Wang,Minghua Lu
Sensitive detection of environmental pollutants that are harmful to organisms is of great significance for prevention of related diseases. In this work, a flower-like Co 3 O 4 /C 3 N 5 composite as solid-phase microextraction fiber coating was developed for extraction of polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs). The Co 3 O 4 /C 3 N 5 composite was derived from the multilayer stacked flower shaped Co(OH) 2 /C 3 N 5 that synthesized by one-pot solvothermal method. Compared with pure monomer materials, the unique structure was maintained and the surface adsorption sites were fully exposed, thereby the adsorption performances of Co 3 O 4 /C 3 N 5 were significantly improved. As a result, the enrichment factors were 3010–5012 for PAHs, and 4499–6180 for PCBs. Under the optimized conditions, the developed method showed wide linear range (0.0005–20 ng mL −1 ) with good linearity (R 2 greater than 0.9912), low detection limits (0.00017–0.061 ng mL −1 , S/N = 3) and quantification limits (0.0005–0.2 ng mL −1 , S/N = 10) for three PAHs and five PCBs. The RSDs (n = 5) of intraday and interday were 2.28–8.35% and 3.49–9.59%, respectively. The reproducibility between fibers (n = 3) was in the range of 7.84–11.96%. The developed method was successfully applied to real water sample with satisfactory recoveries of 81.07–109.1%. As a simple and robust technique, the proposed method will be an alternative way to the analysis of PAHs and PCBs in real samples.
研究领域:
环境科学
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分析化学
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产品关联
DOI
高影响因子
Journal of Water Process Engineering
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2025
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IF 6.7
Kang Zhichao,Wang Tianye,Nannan Li,Han Xuerong,Wang Chenxu,Yang Xiutao,Jing Yue,Yu Hongwen
The leaching of atrazine wastes from agricultural areas presents a considerable risk to the ecosystem. This work aims to create microorganism-material systems employing the atrazine-degrading strain Paenarthrobacter sp. KN0901 and C 3 N 5 -based materials to efficiently eliminate atrazine residues from aquatic environments at low temperatures. The synthesized C 3 N 5 and O-C 3 N 5 markedly improved the growth and atrazine degradation of KN0901. The degradation rate of atrazine in the KN0901-C 3 N 5 and KN0901-O-C 3 N 5 systems rose by 7.3 % and 15.1 %, respectively, in comparison to biodegradation systems. The elevated NADH/NAD+ and GSH/GSSG ratios indicated a greater availability of electrons to KN0901 when associated with C3N5-based materials, implying that these materials contributed electrons to KN0901. Nitazoxanide and methyl viologen inhibited the electron transfer route, leading to a significant decrease in the breakdown rate of KN0901-C 3 N 5 systems. Glucose and sodium citrate, functioning as electron donors, markedly accelerated the degradation rate of atrazine in the KN0901-C 3 N 5 systems. This work demonstrated that C 3 N 5 -based materials may donate electrons to KN0901, hence improving the efficiency of atrazine breakdown at low temperatures. This work successfully developed microorganism-material systems that effectively eliminate atrazine in aquatic settings, especially in cold climates.
研究领域:
环境生物学
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微生物学
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材料科学
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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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产品关联
DOI
PubMed
高影响因子
Advanced Materials Interfaces
·
2022
·Vol. 10
·期 5
·2201627
·
IF 6.389
Xin Wang,Kaili Wu,Wei Cao,Kun Rui,Wenchao Wang,Ruixue Zhu,Jixin Zhu,Zhiping Yan
The intrinsic charge carriers’ recombination and excited states decay greatly suppress the active species survival and photo(electro)catalytic performance. Inspired by Z-scheme strategy, the polymeric nitrogen-rich carbon nitride/cadmium sulfide (g-C 3 N 5 /CdS) core–shell heterojunction is constructed to optimize photocatalytic performance. The optimal hydrogen production rate of g-C 3 N 5 /CdS heterojunction catalyst under visible light without adding extra cocatalyst is up to 7860 µmol h −1 g −1 , which is 3 and 71 times higher than that of pure CdS and g-C 3 N 5 photocatalysts, respectively. The femtosecond transient absorption spectroscopy is employed to observe the kinetic decay of carriers in the heterojunction, revealing the ultrafast charge trapping process (τ 1 = 52.3 ps) and long-lived excited states (τ 3 = 1109.2 ps) in g-C 3 N 5 /CdS photocatalyst. Meanwhile, density functional theory calculation results comprehensively suggest the promoted charge separation in heterojunction. Cost-effective Z-scheme g-C 3 N 5 /CdS photocatalyst in this work shows a great potential for sustainable and high-efficiency solar-to-H 2 conversion.
研究领域:
材料科学
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光催化
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可再生能源
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产品关联
DOI
高影响因子
DIAMOND AND RELATED MATERIALS
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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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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
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2025
·
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
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）