Small
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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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PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2025
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IF 14.3
Xiang Li,Lijuan Liang,Wei Xu,Shuangjiao Li,Shengbo Yuan,Haijuan Zhan,Wanyi Liu
s The built-in electric field (BIEF) aroused by the variation in charge distribution between the surface and bulk phase of carbon nitride can improve carrier dynamics. Herein, phosphorus (P) and benzene ring-doped C 3 N 5 nanosheets (PPCN 2 ) were synthesized by a facile method and demonstrated excellent performance in the photocatalytic degradation of antibiotics. Benzene ring replaced the triazine part of the heptazine unit, expanding the π-conjugated structure of the system, promoting electron delocalization, and enhancing the light-absorbing property. P doping led to the creation of an additional donor state within the P 2p band, facilitating the charge separation and lengthening the transport distance of electron-hole pairs. Additionally, the intermediate state gap created in the Urbach tail further strengthened photon absorption and improved effective electron capture. XPS with Ar ion etching at different depths verified the significant potential difference and large dipole moment caused by different doping levels of surface and bulk phase, resulting in a strong BIEF inside the PPCN 2 . KPFM, SPV, and DFT calculations confirmed the strong BIEF in PPCN 2 . EPR, rotating disk electrode (RRDE) and in situ infrared drift (DRIFT) spectroscopy confirmed the reactive oxygen species and the two-step one-electron reduction reaction mechanism during the photodegradation process. This work provides a new perspective for the study of improving the photocatalytic performance of C 3 N 5 by inducing the BIEF which arose from the differences in electronic structure and charge distribution on the surface and bulk phase caused by molecular doping.
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
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Jiawei Hu,Jiaming Li,Zhongyi Pu,Wen Xiao,Huan Yu,Zhihao Zhang,Fang Yu,Chao Liu,Qinfang Zhang
Heterostructured visible-light-responsive photocatalysts represent a prospective approach to achieve efficient solar-to-chemical energy conversion. Herein, we propose a facile self-assembly technique to synthesize NiO nanoparticles/C 3 N 5 nanosheets (NOCN) heterojunctions for hydrogen (H 2 ) evolution catalysis and hydrogen peroxide (H 2 O 2 ) production under visible light. In this regard, the black NiO nanoparticles (NPs) were tightly anchored on the surface of C 3 N 5 nanosheets (CNNS) to construct S-scheme NOCN heterojunction, enabling efficient charge separation and high redox capability. Obtained results elucidated that the incorporated NiO NPs significantly promote light-harvesting efficiency and photo-to-thermal capacity over the NOCN composites. The enhanced photothermal effect facilitates the charge carrier transfer rate across the heterojunction and boosts the surface reaction kinetics. Accordingly, the photocatalytic performances of CNNS for H 2 release and H 2 O 2 production can be manipulated by introducing NiO NPs. The modified photocatalytic properties of NOCN composites are ascribed to the synergistic effects of all integrated components and the S-scheme heterojunction formation. Impressively, the high H 2 evolution photocatalysis efficiency of NOCN nano-catalysts in seawater certifies their potential environmental applicability. Among all, the 12-NOCN nano-catalyst exhibits a higher photocatalytic efficiency for H 2 release (112.2 μmol∙g −1 ∙h −1 ) and H 2 O 2 production (91.2 μmol∙L −1 ∙h −1 ). Besides, the 12-NOCN nano-catalyst reveals excellent recyclability and structural stability. Additionally, the possible mechanism for photothermal-assisted photocatalysis is proposed. This work affords a feasible pathway to design photothermal-assisted S-scheme heterojunctions for diverse photocatalytic applications.
研究领域:
光催化
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材料科学
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环境科学
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化学工程
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PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
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IF 9.9
Wei Gan,Xucheng Fu,Juncheng Jin,Jun Guo,Miao Zhang,Ruixin Chen,Chunsheng Ding,Yuqing Lu,Jianrou Li,Zhaoqi Sun
Developing efficient and facilitated recycling photocatalysts for H 2 O 2 formation is an ideal strategy for solar-to-chemical energy conversion. In this work, we synthesized ultrathin C 3 N 5 nanosheets through the process of thermal polymerization and polyvinylpyrrolidone (PVP)-assisted solvent exfoliation. Subsequently, the obtained ultrathin C 3 N 5 nanosheets were tightly attached to the surface of TiO 2-x arrays, resulting in an enhanced photocatalytic H 2 O 2 production rate. The density functional theory (DFT) calculations demonstrate that an internal electric field (IEF) is generated between the TiO 2-x array and the ultrathin C 3 N 5 due to the different work functions. The presence of IEF provides an additional driving force for carrier separation and transfer in the heterointerface. Benefitting from this unique strategy, the optimal heterojunction obtains the highest H 2 O 2 formation rate (2.93 μmol/L/min), which is about 4.1 times than that of TiO 2-x arrays. The rotating disk electrode (RDE) analysis manifests H 2 O 2 formation through 2e - -dominated oxygen reduction reaction (ORR). This research provides an innovative strategy for assembling a type-II heterojunction with a useful IEF for efficient photocatalytic H 2 O 2 production.
研究领域:
材料科学
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化学工程
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光催化
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太阳能转换
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高影响因子
CATALYSIS LETTERS
·
2026
·Vol. 156
·期 4
·95
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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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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2020
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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
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光催化
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DOI
高影响因子
TALANTA
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2021
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IF 6.057
Jing-Yan Kang,Wei Ha,Yan-Ping Shi
A novel magnetic C 3 N 5 framework material (Fe 3 O 4 /C 3 N 5 ) was developed as a high selectivity extractant for La(III) determination in food samples. The Fe 3 O 4 /C 3 N 5 material was synthesized by thermal deammoniation method and has larger surface area (100.3 m 2 g −1 ) and more effective adsorption sites compared with that of individual C 3 N 5 material (19.4 m 2 g −1 ). It was proved that Fe 3 O 4 /C 3 N 5 material displayed excellent selectivity and adsorption capacity for La(III). In addition, adsorption isotherm and kinetic data indicated that La(III) adsorption based on Fe 3 O 4 /C 3 N 5 material is a monolayer adsorption which is compatible with Langmuir model and follows a pseudo-second-order kinetic equation. By using Fe 3 O 4 /C 3 N 5 material as extractant, an analytical method was established with low limits of detection (3σ, n = 6) of 10.4 μg L −1 , reasonable recoveries ranged from 86% to 106% and good precision with the RSD less than 10.7%. The analytical method was further applied to the determination of trace La(III) in food sample. It evinced that the concentration of La(III) in sea fish is 13.2 μg kg −1 and the content of 138 La is 0.138 μg kg −1 , which is 1.03% of total La(III).
研究领域:
分析化学
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材料科学
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PubMed
高影响因子
Materials Horizons
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2024
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IF 12.2
Jianwei Yuan,Su Li,Zhaofei Dang,Sixia Liu,Fu Yang,Dongguang Wang,Hengcong Tao,Shuying Gao,Edison Huixiang Ang
Homojunction engineering holds promise for creating high-performance photocatalysts, yet significant challenges persist in establishing and modulating an effective junction interface. To tackle this, we designed and constructed a novel Janus homojunction photocatalyst by integrating two different forms of triazole-based carbon nitride (C3N5). In this design, super-sized, ultrathin nanosheets of carbon-rich C3N5 grow epitaxially on a nitrogen-rich honeycomb network of C3N5, creating a tightly bound and extensive interfacial contact area. This arrangement enhances the built-in internal electric field (IEF) between the two forms of C3N5, facilitating faster directional transfer of photogenerated electrons and improved visible-light harvesting. Consequently, Janus-C3N5 achieves a remarkable H2 evolution rate of 1712.4 μmol h−1 g−1 under simulated sunlight, which is approximately 5.58 times higher than that of bulk C3N5 (306.8 μmol h−1 g−1) and 14.1 times higher than another form of bulk C3N5 (121.2 μmol h−1 g−1). This work offers a new approach to design efficient homojunction-based photocatalysts.
研究领域:
材料科学
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能源化学
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PubMed
高影响因子
Next Materials
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2026
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IF 4.7
KS Pushpa valli,K. Velmurugan,A.S.I. Joy Sinthiya,S. Mary Jelastin Kala,B. Malathi,V. Selvam,C. Anitha
In this work, easy synthesis of CeO 2 nanoparticle-hybridized g-C 3 N 5 /PANI composites is carried out to investigate their interfacial effects on the photocatalytic degradation of Cango Red (CR). The synthesised CeO 2 @g-C 3 N 5 /PANI (Polyaniline) exhibited prevailing photocatalytic activity in contrast to g-C 3 N 5 , CeO 2 and CeO 2 @g-C 3 N 5 . CeO 2 -facilitated photoinduced charge transfer between g-C 3 N 5 and PANI is accountable for the CeO 2 @g-C 3 N 5 /PANI nanocomposite's increased photocatalytic activity. The five recycling tests are used to observe a strengthening of the nanocomposite. Additionally, we elucidated the redox process involving the CeO 2 @g-C 3 N 5 /PANI nanostructure to understand the enhanced electrochemical properties of the composite. The CeO 2 @g-C 3 N 5 /PANI nanostructure exhibited an improvement in the specific capacitance from 230.73 to 76.53 F/g. The composite shows exceptional rate capacitance and satisfactory cyclic stability for up to 2000 cycles at a maximum current density of 20 A g −1 . The assynthesized CeO 2 @g-C 3 N 5 //PANI nanocomposite was fabricated as an electrode to analyse its charge and discharge behaviour. Furthermore, the asymmetric supercapacitor exhibited a remarkable specific capacitance (256 Fg −1 at 2 mV s −1 ) elevated energy density (1.72 Wh kg −1 ) and outstanding power density (1287 W kg −1 ).
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高影响因子
PROGRESS IN ORGANIC COATINGS
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2025
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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
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腐蚀与防护
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表面工程
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Huagen Liang,Haoran Wang,Anhu Wang,Ruolin Cheng,Shengyu Jing,Fu Chen,Palanisamy Kannan,Georgia Balkourani,Panagiotis Tsiakaras
Graphitic phase carbon nitride (g-C 3 N 5 ), as a novel n -type metal-free material, is employed as a visible light-receptive catalyst because of its narrow band gap and abundant nitrogen. To overcome the low carrier mobility efficiency of g-C 3 N 5 , its modification by K ions was adopted. In addition, In 2 S 3 was selected to couple with modified g-C 3 N 5 to overcome the recombination of photogenerated e − /h + . As a novel photocatalytic material, it was proven to possess a high visible light absorption capacity and a strong H 2 O 2 production ability (up to 3.89 mmol⋅L -1 in 2 h). Moreover, a S-scheme heterojunction structure was successfully constructed between the two materials, which was tested and confirmed to be successful in raising the photogenerated e − /h + separation efficiency. Ultimately, the primary processes of photocatalytic H 2 O 2 production were summarized by superoxide radical and rotating disc electron measurements. This research provides a fresh perspective for the synthesis of C 3 N 5 -based S-scheme heterojunction photocatalysts for producing H 2 O 2 .
研究领域:
材料科学
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环境科学
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DOI
PubMed
高影响因子
Catalysis Science & Technology
·
2025
·
IF 4.2
Yanrong Li,Hui Wang,Mengya Cao,Yusong Wen,Yijia Cao,Bao Li,Qing Shen,Wen Gu
In this study, light transition metal-based tetranaphthalene porphyrin/C3N5 [(Np)4MP/CN-x, x is the mass ratio, M = Ni, Cu, Zn] heterojunction composites were prepared and characterized. The photoluminescence spectra, transient photocurrent response and electrochemical impedance shows that the introduction of light transition metal-based tetranaphthalene porphyrin [(Np)4MP] can effectively improve the serious problem of C3N5 photogenerated carrier recombination. Additionally, (Np)4MP functions as a sensitizer, broadening the visible light absorption range of C3N5 and thereby enhancing its photocatalytic activity. Among the synthesized composites, (Np)4CuP/CN-0.5 exhibited exceptional photocatalytic performance. Within 20 min, it achieved degradation efficiencies of 98.95% for 20 ppm methylene blue (MB) and 97.42% for rhodamine B (RhB). Furthermore, it demonstrated remarkable antibacterial activity, with rates of 97.92% against Escherichia coli and 99.31% against Staphylococcus aureus within just 10 min. The photodegradation efficiency of this catalyst surpasses that of most previously reported catalysts. We also gave an insight into the mechanism of photocatalytic degradation of dyes by (Np)4MP/CN-0.5 and found that the degradation effect of the catalyst in accordance with the direct Z-scheme heterojunction mechanism was better than that of the type II heterojunction. This study broadens the way for the synthesis of relatively low-cost and multifunctional photocatalysts.
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