JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2019
·
IF 3.261
Yi Wang,Xinyan Xiao,Jiayi Chen,Xingye Zeng
A novel AgBr and GO co-decorated g-C 3 N 4 /Ag 2 WO 4 (g-C 3 N 4 /Ag 2 WO 4 /AgBr/GO) composite was successfully fabricated by hexadecyl trimethyl ammonium bromide (CTAB)-assisted co-deposition of AgBr and GO onto g-C 3 N 4 /Ag 2 WO 4 composite. The as-prepared composites were characterized by XRD, SEM, TEM, FT-IR, BET, XPS, UV–vis diffuse reflectance spectra (DRS), photoluminescence spectra (PL), and electrochemistry impedance spectroscopy (EIS). The photocatalytic efficiency for tetracycline (TC) degradation over the as-prepared g-C 3 N 4 /Ag 2 WO 4 /AgBr/GO composite is 91.64% within 100 min simulated sunlight irradiation, which is nearly 2.59 and 5.25-folds greater than those of the g-C 3 N 4 /Ag 2 WO 4 and g-C 3 N 4 samples. The enhancement of photocatalytic performance is mainly ascribed to the introduction of AgBr and GO, which serve as photosensitizer and electron acceptor, respectively, confirmed by the results of DRS, PL, and EIS. The active species trapping experiments confirmed that O 2 − and h + are the dominant reactive species responsible for TC degradation. Furthermore, a reasonable n-n heterojunction-based photocatalytic mechanism for the g-C 3 N 4 /Ag 2 WO 4 /AgBr/GO composite was proposed.
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高影响因子
Journal of Environmental Chemical Engineering
·
2022
·
IF 7.968
Mengying Yang,Yunfan Jia,Yun Chen,Pengcheng Yan,Li Xu,Junchao Qian,Feng Chen,Henan Li
Photoelectrochemical (PEC) aptasensor is a promising analysis platform with high selectivity and sensitivity. Exploration of photoelectric active material with excellent photoelectric conversion efficiency is the key condition to design a PEC aptasensor with excellent sensitivity. Herein, a PEC aptasensor was designed and constructed by g-C 3 N 4 /Bi 24 O 31 Cl 10 heterojunction as photoelectric active material for realizing sensitive detecting enrofloxacin (ENR) antibiotic. The formation of heterojunction can facilitate separation and transfer of photogenerated carriers and reduce the recombination rate, leading to the enhancement of photocurrent response compared to that of individual semiconductor. The ENR aptamer was introduced as the specific recognition element to realize excellent selectivity of the PEC aptasensor. Because ENR-aptamer complex can block the transfer of charge, the ENR-PEC aptasensor presented the decreased photocurrent response with the increasing of ENR concentration without external voltage. The developed ENR-PEC aptasensor presented excellent sensitivity and selectivity for detecting ENR with a detection range from 0.5 to 100 fM and a low detection limit of 0.167 fM (S/N = 3). The ENR-PEC aptasensor with good reproducibility may be potential for the determination of the actual samples.
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高影响因子
APPLIED SURFACE SCIENCE
·
2020
·
IF 6.182
Yi Wang,Xinyan Xiao,Jiayi Chen,Mingli Lu,Xingye Zeng
An ordered 1T/2H MoSe 2 possessed few-layers nanosheets structure was synthesized by a NaBH 4 -assisted hydrothermal method. Further, 1T/2H MoSe 2 was integrated with proton g-C 3 N 4 via solvothermal method, forming a novel 2D/2D heterostructure composite (1T/2H MoSe 2 /pg-C 3 N 4 ) with Z-scheme heterojunction. 1T/2H MoSe 2 /pg-C 3 N 4 had narrower bandgap, abundant active sites, as well as better photocurrent response and conductivity, confirmed by spectroscopic and electrochemical characterizations. Consequently, the optimal 1T/2H MoSe 2 /pg-C 3 N 4 at 1 wt% MoSe 2 loading showed enhanced TC (RhB) photodegrading rate of 92% (99%), within 80 min (45 min) of simulated solar light irradiation, being 3.0 (3.4) and 1.2 (1.2) times than that of pg-C 3 N 4 and 2H MoSe 2 /pg-C 3 N 4 , respectively. Additionally, active species trapping experiments indicated that O 2 − and h + were the main species of contaminants degradation over 1T/2H MoSe 2 /pg-C 3 N 4 . Combining with DRS, Mott-Schottky and VB XPS analysis, a reasonable 1T phase boosted Z-scheme MoSe 2 -based heterojunction mechanism was proposed.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Yakai Chen,Xinya Feng,Xiaohan Yu,Xingliang Xu,Jing Xu
Catalytic transfer hydrogenation of nitro compounds to amines under mild conditions offers an alternative strategy to traditional hydrogenation processes involving pressurized molecular hydrogen, which necessitate the rational design and integration of multifunctional catalyst. Herein, a ternary composite catalyst (Pd/CeO 2 -C 3 N 4 ) was designed and synthesized for the transfer hydrogenation of nitro compounds to corresponding amines compounds using formic acid as hydrogen donor. The Pd/CeO 2 -C 3 N 4 catalyst shows remarkably high performance for the catalytic transfer hydrogenation of nitrobenzene (NB) to aniline (BA), achieving > 98 % conversion and exceedingly high selectivity (>99 %). The catalyst exhibits a high turnover frequency (TOF) of up to 2868 h - , significantly surpassing both the reference catalyst (Pd/C 3 N 4 and Pd/CeO 2 ) and the conventional Pd/C catalyst. The multi-functional Pd/CeO 2 -C 3 N 4 catalyst features enhanced electron transfer properties,well-exposed Pd active sites, and abundant acid-base sites, enabling effective enhancement of formic acid dehydrogenation and nitro group activation. Moreover, Pd/CeO 2 -C 3 N 4 demonstrates excellent recyclability and a broad substrate scope for the catalytic transfer hydrogenation of various nitro compounds. The rational design of Pd/CeO 2 -C 3 N 4 will broaden the application range of Pd-based catalysts and provide a sustainable and effective approach for the catalytic transfer hydrogenation of other industrially relevant organic compounds.
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高影响因子
Journal of the Taiwan Institute of Chemical Engineers
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2025
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IF 6.3
Zili Liang,Jianan Dai,Meiting Zhao,Jing Ma,Jiaxing Zhang,Tengyue Zhang,Rui Liu
Background Escalating global water pollution from intensified industrial and agricultural activities has highlighted the urgent need for sustainable wastewater treatment. Semiconductor photocatalysis is a promising solution, yet conventional type-II heterojunctions often suffer from sluggish charge separation and weak redox capacity, limiting their practical application. Methods To address these challenges, a series of Z-scheme g-C 3 N 4 /BiVO 4 (CN/BV) heterojunctions were rationally engineered via hydrothermal temperature modulation (100-180 °C), enabling precise control of crystallinity, morphology, and band alignment. Advanced characterizations (XRD, TEM, UV-vis DRS, and XPS) were combined with EPR analysis, DFT calculations, and XPS valence band studies to elucidate the structure–property–activity relationship. Furthermore, machine learning models were integrated with experimental data to predict norfloxacin (NOR) degradation performance under diverse operational conditions. Significant Findings The optimized CN/BV composite synthesized at 120°C exhibited outstanding photocatalytic activity, achieving 94.41 % degradation of norfloxacin (10 mg/L) within 120 min under visible light (λ > 420 nm), with an apparent rate constant ( k = 0.02618 min⁻¹), 4.83 times higher than BiVO 4 and 2.44 times higher than g-C 3 N 4 . EPR and radical trapping analyses identified •OH and •O₂⁻ as the dominant reactive species, while mechanistic evidence confirmed a direct Z-scheme charge transfer pathway enabling efficient carrier separation and strong redox capability. Integrating this rationally designed photocatalyst with machine-learning prediction ( R 2 = 0.8558, RMSE = 0.0510) establishes a data-driven framework for performance optimization. This study provides both a mechanistic insight and an intelligent design paradigm for next-generation photocatalysts targeting efficient degradation of emerging contaminants.
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产品关联
DOI
高影响因子
Materials Science and Engineering B-Advanced Functional Solid-State Materials
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2025
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IF 4.6
Wenbin Huang,Ningran Hou,Han Yang,Zhen Xu,Tianyu Bai,Fan Shao,Yasong Zhou,Qiang Wei
Series g-C 3 N 4 /Cu/B-TiO 2 (x) composites with different mass ratio of g-C 3 N 4 to Cu/B-TiO 2 were prepared and tested for photocatalytic reduction of CO 2 . The structure–function relationship of the photocatalysts was investigated through various characterization methods and photocatalytic experiments. The results show that g-C 3 N 4 can be uniformly distributed on the surface of Cu/B-TiO 2 and formed a stable heterojunction structure, which effectively reduced the band gap width of the catalyst, thus significantly improving the visible light absorption capacity of the catalyst. The modulation of the composite material properties can be realized by regulating the composite ratio of g-C3N4 and Cu/B-TiO 2 . The rate and selectivity of photocatalytic reduction of CO 2 to produce CO reached the maximum when the mass ratio of g-C 3 N 4 to Cu/B-TiO 2 was 3:7, and the rate of CO production was as high as 32.65 μmol∙g −1 ∙h −1 , which was about 12.87 percentage points higher than that of Cu/B-TiO 2 .
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产品关联
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高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2023
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IF 4.1
Zhengqiaoruo Zhu,Nan Zhou,Yakun Li,Xiaoli Zhang,Linlin Zhang
Due to their unique persistence in the environmental cycle, pharmaceuticals and personal care products (PPCPs) are increasing concern in the scientific community. Therefore, the development of new energy-saving and environmentally compatible technologies to remove these pollutants is highly requested. In this work, an S-scheme photocatalytic nanoreactor was synthesized by Fe 2 O 3 nanoparticles to S doped carbon nitride nanosheets . The unique structure of S-scheme Fe 2 O 3 /SCN heterojunction enhances its optical absorption and has a large number of active sites and photogenerated carrier separation. Consequently, the Fe 2 O 3 /SCN demonstrated excellent photo-Fenton degradation activities under visible light irradiation. Remarkedly, 5 mg/L of norfloxacin is completely photo-Fenton degraded following 25 min under visible light irradiation. It further shows that ·OH and ·O 2− play an important role in the photo-Fenton catalytic reaction , leading to the decomposition of norfloxacin. The degradation of tetracycline further demonstrates that this photo-Fenton catalytic system can be effectively used to remediate pharmaceutical and personal care product contamination in environmental waterways.
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高影响因子
APPLIED SURFACE SCIENCE
·
2023
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IF 6.7
Xuliang Zhang,Shuangying Chen,Fushui Guo,Qiang Jing,Peipei Huo,Liu Feng,Fazhe Sun,Sakthivel Chandrasekar,Liantao Hao,Bo Liu
The synthesis of g-C 3 N 4 with a large specific surface area is highly desirable for developing g-C 3 N 4 -based photocatalysts with good activity. Herein, the specific surface area of g-C 3 N 4 was enlarged by preconditioning its raw material via a preassembly method, and the prepared g-C 3 N 4 , which has an enlarged specific surface area, exhibited a special maize-like structure. Interestingly, the specific surface area of this maize-like g-C 3 N 4 can be easily modulated by simply changing the amount of the special preconditioned precursor and the volume of the reaction cell used during the synthesis process, and the specific surface area can be enlarged to at least 224.11 m 2 /g. Several techniques, including transient-state photoluminescence spectroscopy, surface photovoltage response, and electrochemical measurements, confirmed that the charge separation property of g-C 3 N 4 is enhanced by enlarging its specific surface area, and it also exhibited increased photocatalytic degradation activities. This work provides a feasible strategy for designing high-performance g-C 3 N 4 -based photocatalytic systems.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2022
·
IF 9.965
Fengyan Xie,Guofa Dong,Minghui Wu,Kechen Wu,Chunlei Huang,Shaowu Du,Yafeng Li,Mingdeng Wei,Caiyun Chen
The development of excellent ternary metal oxides as electron transporting layers (ETLs) is highly challenging for perovskite solar cells (PSCs). In this study, ZnTiO 3 (ZTO) nanoparticles are synthesized via a facile sol-gel method, and used as an ETL in PSCs. Furthermore, for the first time, iodine-doped g-C 3 N 4 (ICN) is introduced into ZnTiO 3 -based ETL as additive via a glass-assisted annealing route. Characterizations demonstrate that the ZnTiO 3 -based ETL with the addition of ICN will enhance the PCE, which is attributed to the improved crystalline quality and more favorable energy level alignment. Moreover, the existence of ICN will strengthen the interfacial cohesion between perovskite layer and ETL as well as retard the perovskite crystals from decomposing, leading to the high quality capping light-harvesting layer upon ICN-modified ZnTiO 3 (ZTO-ICN) film. Consequently, a champion device fabricated with ZTO-ICN ETL achieves a maximum PCE of 19.17 % with an open circuit voltage (V oc ) of 1.012 V, a short-circuit current density (J sc ) of 26.32 mA cm −2 and a fill factor (FF) of 0.720 under AM 1.5 G sunlight (100 mW cm −2 ).
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PubMed
高影响因子
Green Energy & Environment
·
2020
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IF 6.395
Wei Zhang,Jiajun Wang,Zewei Liu,Yibing Pi,Rong Tan
Graphitic carbon nitride ( g -C 3 N 4 ) is a fascinating photocatalyst for solar energy utilization in photo-catalysis. Nevertheless, it often suffers from moderate photo-catalytic activity due to its low specific surface area and fast recombination rate of photogenerated electrons upon photo-excitation. Herein, we overcome the bottlenecks by constructing a porous g -C 3 N 4 nanosheet ( PCNS ) through a simple thermal oxidation etching method. Benefited from its porous layer structure, the obtained PCNS exhibits large specific surface area, efficient separation of photogenerated charge carriers, as well as high exposure of active sites. As a result, it is robust and universal in visible light-driven dehydrogenation of alcohols in water under oxidant-free condition. Almost quantitative yields (> 99%) of various valuable carbonyl compounds were obtained over PCNS , while bulk g -C 3 N 4 was far less efficient. Moreover, the photo-catalyst was highly stable and could be facilely recovered from the aqueous system for efficient reuse. The easy preparation and excellent performance made PCNS a promising and competitive photocatalyst for the solar applications.
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高影响因子
MICROCHIMICA ACTA
·
2018
·Vol. 186
·期 1
·1-9
·
IF 5.705
Huang Yanli,Tan Yi,Feng Chuanqi,Wang Shiquan,Wu Huimin,Zhang Guangxue
The preparation of 3 kinds of carbonaceous nanocomposites by hydrothermal treatment and subsequent calcination described. The first comprises a nanomaterial of type CuO/g-C 3 N 4 , with g-C 3 N 4 in mass fractions of 2, 5 and 7 wt%, respectively. The second comprises CuO/porous carbon (5 wt%), and the third comprises CuO/carbon spheres (5 wt%). All of them were employed to modify a glassy carbon electrode (GCE) to obtain electrochemical sensors for glucose and dopamine. The GCE modified with CuO/g-C 3 N 4 (5 wt%) displays the highest electrocatalytic activity towards glucose and dopamine. Figures of merit for sensing glucose (in 0.1 M NaOH solution) include a wide linear range (0.5 μM to 8.5 mM), a detection limit of 0.150 μM, and a sensitivity of 0.274 μA·μM −1 ·cm −2 (at a working potential of 0.60 V vs. Ag/AgCl). The respective data for dopamine (in pH 7.0 solution) are linear ranges from 0.2-16.0 μM and 16.0-78.7 μM, a lower detection limit of 60 nM, and an electrochemical sensitivity of 0.834 and 0.331 μA·μM −1 ·cm −2 (at a working potential of 0.22 V vs. Ag/AgCl). The good performance of the modified GCE is attributed to the synergetic interactions between CuO and the appropriate fraction of g-C 3 N 4 , and the improvement of conductivity.
Schematic presentation of a electrochemical sensor based on CuO/g-C 3 N 4 for the determination of glucose and dopamine.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 46
·期 42
·20146-20153
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IF 3.925
Zhengxing Gong,Jing Luo,Xinrong Shao,Xu Sun,Huan Wang,Dan Wu,Dawei Fan,Yuyang Li,Qin Wei,Huangxian Ju
A novel quenching electrochemiluminescence (ECL) immunosensor for the trace detection of neuron-specific enolase (NSE) was developed. Doping CdS with Zn2+ to obtain ZnCdS not only significantly improves the original properties of CdS, but also can be loaded onto the surface of g-C3N4 to form a special complex structure, which effectively improves the ECL performance of g-C3N4. Rh0.6Ru0.4 alloys with flower-like structures were prepared by simple hydrothermal synthesis, with excellent electrical conductivity and catalytic performance. Due to its special flower-like structure with a large specific surface area, Ag nanoparticles can be uniformly loaded on its surface to form Rh0.6Ru0.4@Ag composites. Through spectral comparison, it was found that Rh0.6Ru0.4@Ag has strong UV-vis absorption in the ECL emission wavelength range of g-C3N4, which can generate resonance energy transfer, thereby effectively quenching the ECL signal. The immunosensor has a wide detection range with a detection limit of 16 fg mL−1 (S/N = 3), good stability and biocompatibility, and has great potential in clinical application.
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高影响因子
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