APPLIED SURFACE SCIENCE
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2026
·
IF 6.6
Qiang Bi,Kechun Wang,Yi Zhao,Guangdong Wu,Yanyan Zhou,Changbin Tang,Zhihua Leng,Juanqin Xue
Graphitic carbon nitride (g-C 3 N 4 ) is restricted by its narrow light absorption range, which results in low photocatalytic efficiency. To address this problem, a plasmon- and upconversion-enhanced ternary photocatalyst (denoted as GdF 3 @g-C 3 N 4 @Ag) was subtly designed and synthesized in situ. The g-C 3 N 4 nanosheets were encapsulated on the GdF 3 by a simple vapor deposition method, which has not been reported in the literature. The GdF 3 @g-C 3 N 4 @Ag composite exhibits full-spectrum responsiveness and remarkably improved photocatalytic activity in the degradation of tetracycline hydrochloride compared with plain g-C 3 N 4 . The degradation rate constant of the best-performing photocatalyst GdF 3 @g-C 3 N 4 @5%Ag (2.618 × 10 −2 min −1 ) is higher than that of g-C 3 N 4 (1.723 × 10 −2 min −1 ) under irradiation at λ ≥ 400 nm. This study develops a full-spectrum responsive photocatalyst based on GdF 3 @g-C 3 N 4 @Ag, showing its great potential to fully utilize the solar spectrum, and provides important insights into the construction of full-spectrum responsive photocatalysts.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
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IF 9
Yan Ding,Qinghong Liu,Xunshang Shi,Shuai Wu,Zhiying Feng,Liang Zhu,Chenxi Zhang,Libin Yang,Haotian Wu,Shusen Chen
Uranium as “food” for nuclear energy plays an indispensable role in the sustainable development of the nuclear industry and is a strategic resource. With the increasing scarcity of uranium resources on land, extracting uranium from the ocean is one of the ways to solve the shortage of uranium resources. The adsorption methods have been more attention in the technology of uranium extraction from seawater. However, the adsorption capacity of various adsorbents which have been widely studied is far from the target of practical application. The g-C₃N₄ as an excellent and easy to obtain photocatalyst has been widely concerned. The coupling effect of photocatalysis and adsorption may be one of the effective ways to improve the adsorption capacity of uranium extraction from seawater. In this paper, the amidoxime (AO) and carbonyl (C=O) as a dual-functional groups were in situ grafted to g-C₃N₄ NTs to optimize the electronic structure and chemical active for photocatalytic adsorption of uranium extraction from seawater. The results of performance test demonstrated that the uranium adsorption capacity reached 512.46 mg·g −1 with C=O-AO/g-C₃N₄ NTs powders under simulated sunlight irradiation and the recovery efficiency of the modified absorbents was over 92 % from simulated sea water. The adsorption process mechanism analysis results proved that photogenerated electrons intensified by introduced C O groups capture to reduce UO₂ 2+ ions preferentially chelated by AO groups of C=O-AO/g-C₃N₄ NTs to hydrated quadrivalent peroxide uranyl species under oxygen-rich conditions.
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ACS Omega
·
2024
·
IF 3.7
Xin Xu,Ze Zhang,Hongwei Yu,Tong Shen,Hongzhi Pan,Dong Chang
Nonsmall cell lung cancer (NSCLC), due to its lack of early symptoms, has become one of the leading causes of cancer-related deaths globally. Exosomes, small membrane vesicles secreted by cells, are widely present in human bodily fluids. In the bodily fluids of NSCLC patients, the quantity of extracellular vesicles is double that of healthy individuals, suggesting their potential as biomarkers for screening NSCLC. This study designed a dual-modal aptasensor that integrated excellent sensitivity in electrochemical detection and portability in fluorescence detection into one device. AuNPs were functionalized with exosome-capturing probes containing thiol-modified CD63 aptamers, which were immobilized on screen-printed gold electrodes. On the other hand, the carboxylated CD63 aptamer was immobilized on the surface of PB-modified g-C3N4 loaded with Co-SANs particles (Co@g-C3N4@PB). By combining these components, a sandwich structure (AuNPs/Apt1/Exo/Apt2- Co@g-C3N4@PB) was constructed, forming a probe for specific exosome recognition. First, the samples were preliminarily assessed for their positive or negative status under a fluorescence inverted microscope. Subsequently, a more in-depth quantitative analysis was conducted on suspected positive samples using electrochemical or fluorescence analysis methods. The detection limits for electrochemical analysis and fluorescence analysis were 66.68 and 33.5particles/mL, respectively. In the analysis of clinical serum exosome samples, the developed dual-modal aptasensor effectively distinguished serum specimens from those of NSCLC patients and healthy volunteers. This highlighted the inspection capability of the dual-modal adapter sensor, especially in point-of-care testing, making it a highly suitable tool for clinical applications.
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PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2026
·
IF 9.1
Lin Qiao,Ze Zhang,Dong Fu
Utilizing photocatalysis to reduce CO 2 into value-added products is a promising and sustainable pathway. This study reports the fabrication of a low-cost CuO/carbon spheres/g-C 3 N 4 composite material without the use of precious metals, featuring a p-n heterojunction between CuO and g-C 3 N 4 interconnected by a conductive carbon bridge. The optimal sample has suitable CO 2 adsorption capacity (1.4 mmol/g at 1 bar, 25 °C) and exceptional CO 2 photocatalytic performance. The optimal sample achieves CO and CH 4 production yields of 110.95 and 9.9 μmol/g h −1 , respectively, with 73.7% CO selectivity. Photoelectrochemical tests reveal that the CuO/g-C 3 N 4 heterojunction facilitates rapid electron transfer via the carbon medium, achieving effective electrons(e − )-holes(h + ) separation. In-situ Diffuse Reflectance Infrared Fourier Transform Spectroscopy (in-situ DRIFTS) analysis and Density Functional Theory (DFT) calculations collaboratively verify the efficient reaction pathway via key intermediates (COOH*, CHO*, CH 2 O*, and CH 3 O*) and elucidate the electronic structure driving the enhanced charge dynamics. Furthermore, property-performance correlation analysis indicates that the charge separation efficiency is the main performance driving factor. A life cycle assessment (LCA) demonstrates that avoiding the use of precious metals during catalyst preparation leads to a significant reduction in the environmental footprint of CuO/carbon spheres/g-C 3 N 4 . The main environmental impact comes from electricity consumption during production. This work provides a sustainable blueprint for designing efficient photocatalysts by integrating interfacial engineering with mechanistic understanding for solar-driven CO 2 valorization.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Xin Liu,Yunlong Zhao,Ping Wang,XueYing Zhao,Ronglan Wu,Qingqing Guan,Lu Wang,Chao Yang
A creatinine-mediated post-polymerization calcination approach has been developed for modifying g-C 3 N 4 nanosheets to enhance their photocatalytic hydrogen production and pollutant degradation activities. The incorporation of creatine or its derivatives induced a negative shift in the conduction and valence band edges of g-C 3 N 4 and activated n-π ⁎ electronic transition, thereby enhancing the reducing ability of electrons and extending light absorption range. Creatinine-calcined g-C 3 N 4 (TCN-30Crn) exhibited a significantly enhanced photocatalytic activity toward hydrogen production (3721.9 μmol h −1 g −1 ) in water, which was 8.6 times that of the pristine counterpart. The hydrogen production rate was further increased to 8853.67 μmol h −1 g −1 in aqueous solution of sodium dihydrogen phosphate. TCN-30Crn also showed broad catalytic activity for the photodegradation of methyl orange, rhodamine B, o -nitroaniline, methylene blue, and ciprofloxacin. The high activity of creatinine-calcined g-C 3 N 4 could be attributed to the improved separation efficiency of photo-generated electron-hole pairs and the inhibition of charge carriers recombination.
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OPTICS AND LASER TECHNOLOGY
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2026
·
IF 5
Yuhan Wang,Xinghua Yang,Minghua Ma,Pingping Teng,Fengjun Tian,Rui Wang,Xin Li,Ao Guan,Xinyu Yang,Zhihai Liu,Jianzhong Zhang,Adam Jones,Kang Li
Surface-enhanced Raman scattering (SERS) technology has shown great potential for pesticide residue detection due to its high sensitivity and molecular fingerprinting capability. However, conventional SERS sensors still face challenges such as limited enhancement efficiency, insufficient environmental stability, high sample consumption, and poor portability, which restrict their practical applications. This paper first presents and demonstrates an in-fiber optofluidic SERS sensor based on the unique microstructure of a cloverleaf hollow fiber (CHF) structure, in which a graphitic carbon nitride/silver nanoparticle (g-C 3 N 4 /Ag NPs) nanocomposite is functionalized onto the inner wall as an active SERS substrate. The CHF consists of a solid core surrounded by four microchannels that naturally guide analyte solutions to efficiently interact with the evanescent field propagating along the fiber core. Through chemical bonding, the g-C 3 N 4 /Ag nanocomposite is firmly anchored to the channel surfaces, forming a stable and highly active Raman enhancement interface. Furthermore, the synergistic electromagnetic and chemical coupling between g-C 3 N 4 and Ag NPs markedly amplifies the Raman response. Benefiting from the unique structure of the cloverleaf fiber and the synergistic enhancement effect of the SERS composite substrate, the enlarged light-matter interaction area and continuous signal accumulation along the entire fiber, the sensor achieves detection limits of 5.21 × 10 −9 mol/L, 7.15 × 10 −8 mol/L and 2.88 × 10 −8 mol/L for representative pesticides, with excellent linearity and repeatability. Consequently, the compact and flexible configuration enables real-time, in situ, and trace-level detection, demonstrating great potential for portable optical sensing, environmental monitoring, and food safety applications.
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高影响因子
Food and Bioprocess Technology
·
2026
·Vol. 19
·期 3
·152
·
IF 5.6
Yang Lingfan,Liu Ruiqi,Shi Yingkun,Li Changhao,Wang Guangxian,Xie Haijiao,Luo Ruiming,Wang Songlei
Xanthine (XA) and hypoxanthine (HA) are key biochemical markers of meat freshness, yet rapid, wide-range, and enzyme-free quantification in complex meat matrices remains challenging. Here we report a density functional theory (DFT)-guided Cu–MoS 2 /g-C 3 N 4 heterostructure electrochemical sensor for broad-range non-enzymatic detection of XA and HA. The heterojunction prepared via a hydrothermal and ultrasonic strategy provides an efficient charge-transport pathway and enriched catalytic interfaces. DFT calculations reveal pronounced interfacial charge redistribution and strong adsorption of XA and HA on the Cu–MoS 2 /g-C 3 N 4 surface, with adsorption energies of − 0.98 eV for XA and − 2.16 eV for HA, explaining the boosted electrooxidation response. The sensor achieves low detection limits of 0.15 μM for XA and 0.28 μM for HA and wide linear ranges from 0.913 to 1643.5 μM and from 0.918 to 1653.1 μM, respectively, and enables simultaneous quantification from 0.5 to 400 μM with excellent linearity. Good stability, reproducibility, and anti-interference capability are obtained. In real meat samples, recoveries from 90.7% to 108.3% for XA and from 91.3% to 111.4% for HA agree well with high-performance liquid chromatography, supporting rapid meat freshness evaluation.
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JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2026
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IF 4.4
Hongxia Zhang,Junxin Huang,Ming Zhong,Fangzhen He,Na Dong,Bitao Su,Ziqiang Lei
To address the remediation needs of antibiotic-contaminated water, this study developed a highly efficient and stable novel photocatalyst. A 2D/3D S-scheme g-C 3 N 4 /Bi 2 MoO 6 (CN/BMO) heterojunction was synthesized via a simple preparation method, with its core mechanism relying on the internal electric field (IEF) formed at the semiconductor interface. This field actively regulates the S-scheme charge transfer pathway, a process directly validated through a series of photoelectrochemical analyses: significantly quenched photoluminescence signals and shortened carrier lifetimes confirmed efficient interfacial recombination, while enhanced photocurrent responses and reduced electrochemical impedance indicated effective spatial separation of electron-hole pairs. The optimized carrier separation efficiency significantly improved the photocatalytic performance of the material. Under visible light irradiation, the degradation efficiency of tetracycline (TC) reached 85%, with degradation rates exceeding 80% for multiple antibiotic pollutants. Additionally, the material exhibited excellent stability in five consecutive cycling experiments. Mechanistic studies revealed that the synergistic effect of superoxide radicals ( · O 2 − ) and photogenerated holes (h + ) dominated the reaction process, as conclusively verified by electron paramagnetic resonance (EPR) spectroscopy. Degradation pathway analysis via mass spectrometry (MC-LS) demonstrated that TC primarily undergoes cleavage through demethylation, hydroxylation, and ring-opening reactions, with simultaneous assessment of the toxicity and ecological risks of reaction intermediates. This work provides new theoretical foundations and practical solutions for the photocatalytic removal of antibiotics in real water bodies.
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高影响因子
JOURNAL OF PHYSICS D-APPLIED PHYSICS
·
2022
·Vol. 55
·期 44
·444008
·
IF 3.409
Jian Cao,Xiaoli Jin,Zhaoyu Ma,Huiqing Wang,Yixue Xu,Yuwei Guo,Haiquan Xie,Junying Zhang
Graphitic carbon nitride (g-C3N4) is gaining more and more attentions as a promising metal-free photocatalyst for H2 production. Nevertheless, from the perspective of practical applications, the photocatalytic performance over g-C3N4 in visible-light region needs a further improvement. In this work, C doping and C quantum dots (QDs) are co-integrated in g-C3N4 by a one-step thermal polymerization method to obtain an advanced C QDs/C doped g-C3N4 photocatalyst. The synergistic effects of C doping and C QDs modification promote the photocatalytic activity of g-C3N4 significantly. The optimal C QDs/C doped g-C3N4 exhibits a significant improvement on visible-light-driven photocatalytic hydrogen production (205 μmol g−1 h−1) with an apparent quantum yield (AQE) at 420 nm reaching 1.24%, which is approximately nine-fold enhancement than that of pristine g-C3N4. The increased photocatalytic activity mainly benefits from the enhanced visible light absorption and carrier separation efficiency. This study may open a new perspective for the design and fabrication of C-modified g-C3N4 for photocatalytic hydrogen production.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Xing Zhang,Suhang Chen,Haidong Luo,Zhenhua Tang,Enzhou Liu,Zhao Qin,Kangzhen Xu
The rapid redox cycle of metal active sites and effective surface reactions are crucial factors to activate peroxymonosulfate (PMS) for environmental remediation. Herein, a novel F-g-C 3 N 4 /Mn x Co 3−x O 4 composite as high-efficient PMS activator was successfully constructed by a one-step hydrothermal method for the degradation of 1,1-diamino-2,2-dinitroethylene (FOX-7). It was discovered that F doping could narrow the band gap, and enhance the light absorption range and the separation of photogenerated electron-hole pairs. Among all samples, the catalytic activity of F-CN/MCO was higher than that of MCO and CN/MCO. This can be attributed to the unique materials morphology and the synergistic effect of photocatalytic and chemical catalytic driven PMS activation. Quenching experiments and electron paramagnetic resonance (EPR) proved that both radical and non-radical pathways are responsible for the degradation of FOX-7, and singlet oxygen ( 1 O 2 ) was identified as the predominant active species. Importantly, the synergy between Co 2+ /Co 3+ and Mn 2+ /Mn 3+ couples enhanced more electron transfer and better redox potential, thus greatly promoting the photocatalytic activation of PMS. This work provides a novel approach for designing efficient catalyst to promote the redox behavior of metal species in sulfate radical-based advanced oxidation processes.
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高影响因子
OPTICAL MATERIALS
·
2022
·
IF 3.754
Jinfen Niu,Kai Wang,Lan Yang,Jiahui Shi,Yue Zhang,Fan Yang,Xiaojiao Yu,Binghua Yao
Photocatalysis can be a potential technique for decomposing antibiotics contaminants from water. In this study, g-C 3 N 4 modified Bi/BiOBr nanosphere were prepared by a simple microwave solvothermal method, and the structure-properties relationships of the Z-scheme heterojunction were evaluated in degrading organic dyes. Various characterization techniques were then applied to elucidate the structure-performance relationships of the resulting heterojunction photocatalysts in degrading CIP. Compared with pristine g-C 3 N 4 or Bi/BiOBr, the g-C 3 N 4 @Bi/BiOBr nanocomposites showed heightened property in photocatalytic degradation of CIP. The photocatalytic efficiency of CIP decomposition over the Z-scheme of g-C 3 N 4 @Bi/BiOBr heterojunction was about 2.38 and 1.35 times homologous to those of original g-C 3 N 4 and Bi/BiOBr. The enhancement in photocatalytic activity of g-C 3 N 4 @Bi/BiOBr could be described by the Z-scheme pathway and the SPR effect of Bi 0 , which broadened visible light absorption and promoted the separation of photoinduced carriers. In addition, the effect of typical water matrix factors, such as pH, anionic, and cationic on photodegradation rate were evaluated. Furthermore, results of scavenging experiments showed that ·OH, ·O 2 − , and h + all participate in the degradation of CIP. Based on the band structure and scavenging measurements, a possible photocatalytic mechanism for the as-synthesized g-C 3 N 4 @Bi/BiOBr composites was proposed.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Jun Luo,Chengcheng Ding,Yonghai Gan,Yang Guo,Yibin Cui,Cheng Sun
A dual-MOFs (Fe and Co)/g-C 3 N 4 heterojunction composite was successful constructed and used to activate peroxymonosulfate (PMS) for degrading sertraline (SER). The composite showed outstanding catalytic activity with 100% of SER removal efficiency in 60 min and the degradation rate 0.057 min −1 . At the same time, the amount of catalyst, concentration of PMS and environmental pH on the degradation for SER were investigated in detail. The main degradation products and pathways of SER were analyzed by Gaussian theory calculation and high-performance liquid chromatography-mass spectrometry (HPLC-MS). Based on the free radical quenching experiments and electron paramagnetic resonance (EPR) characterization analysis, it was confirmed that •OH and SO 4 •- were produced in the catalytic reaction process, and explained catalytic mechanism elaborately. This work demonstrates the connection of MOF-Fe nanoparticles , micropores and heterojunction with the catalytic activity, providing an efficient catalytic system that can promote electron transfer and circulation of high activity center.
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高影响因子
危险品化学品经营许可证（带存储）