FUEL
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2025
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IF 7.5
Shiyu Wang,Shuai Wang,Mingmei Ge,Yang Zhao,Hua Song,Huan Wang
This work introduces a template-free strategy for preparing three-dimensional (3D) honeycomb-like graphitic carbon nitride (g-C 3 N 4 ) with high specific surface area through phosphoric acid-regulated supramolecular self-assembly. By systematically tuning phosphoric acid dosage, the self-assembly process of melamine-cyanuric acid aggregates is precisely controlled, resulting in a hierarchically porous architecture with interconnected channels and abundant porosity. The optimized phosphoric acid-mediated support (SSCN-0.89) enables uniform dispersion and stabilization of ultrafine Pt nanoparticles (∼1.7 nm) via enhanced metal-support interactions. Under mild conditions (120 ℃, 0.5 MPa H 2 ), the resultant Pt/SSCN-0.89 catalyst achieves 94.1 % phenol conversion within 80 min with exclusive cyclohexanol selectivity (100 %). Mechanistic studies reveal that the hierarchical porous structure facilitates rapid mass transfer, while the tailored surface nitrogen species lower the reaction energy barrier. The catalyst retains robust stability over five cycles, demonstrating the pivotal role of 3D morphological engineering in designing high-performance carbon nitride-based catalytic supports for biomass upgrading.
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高影响因子
RSC Advances
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2019
·Vol. 9
·期 71
·41591-41602
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IF 3.049
Yu Qiao,Qian Han,Dong Li,Hongji Li,Bing Wei,Guangbo Che,Wei Jiang,Weisheng Guan
A novel Ag/metal–organic framework/graphitic carbon nitride (Ag/HKUST-1/g-C3N4, AHC) photocatalyst was prepared via an in situ growth strategy and photo-deposition technique for environmental remediation. The as-obtained samples were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), N2 adsorption–desorption isotherm measurement, UV-vis diffuse reflection spectroscopy (UV-vis DRS), and photoluminescence (PL) spectroscopy. The results indicated that the hybrids have large surface area, mesoporous structure and enhanced visible-light absorption. The as-prepared hybrid samples exhibited considerable improvement in photocatalytic activity and stability for rhodamine B (RhB) degradation under visible light irradiation (λ > 420 nm). In addition, they also have good adsorption properties. Compared to the pure g-C3N4 and Ag/g-C3N4, the 5% AHC photocatalyst showed superior photocatalytic activity. Moreover, 5% AHC exhibits good photocatalytic activity even after four cycles. Additionally, the active species trapping and electron spin resonance (ESR) experiments indicated that h+ and ·OH were the main active species.
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ELECTROCHIMICA ACTA
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2016
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IF 4.803
Dandi Zhou,Min Wang,Jing Dong,Shiyun Ai
The rapid and sensitive detecting technique for subgroup J of avian leukosis viruses (ALVs-J) needs to be developed as soon as possible in order to not only reduce economic losses but also ensure the food safety. In this paper, a novel electrochemical immunosensor was built based on mesoporous graphitic carbon nitride (mpg-C 3 N 4 ). Mpg-C 3 N 4 was used as the sensor platform to bond with the primary antibodies (Ab 1 ). The compound of thionine and mpg-C 3 N 4 (Th-mpg-C 3 N 4 ) was synthesized for the first time to serve as the electroactive probe as well as the carrier of secondary antibodies (Ab 2 ). Compared to bulk g-C 3 N 4 , mpg-C 3 N 4 possesses larger specific surface area, smaller electrochemical resistance and abundant active sites. So the proposed electrochemical immunosensor exhibited amplified detective signals which realized the sensitive detection of ALVs-J. Under the opitimized conditions, the immunosensor exhibited outstanding analytical performance for the detection of ALVs-J whose titer ranged from 10 2.08 to 10 4.0 TCID 50 /mL (TCID 50 : 50% tissue culture infective dose) with a low detection limit of 120 TCID 50 /mL (S/N = 3). The sensitivity of the immnosensor was 6.15 μA/(TCID 50 /mL). This high sensitive immunosensor also displayed good selectivity, reproducibility and stability. Last but not least, this new strategy may be of great promise for clinic application in the future.
研究领域:
生物医学工程
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免疫学
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病毒学
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分析化学
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纳米生物技术
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GREEN CHEMISTRY
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2026
·
IF 9.2
Lin-Yu Jiao,Ze-Long Sun,Wen-Yu Luo,Ying-Ying Xu,Fei Wen,Yanfei Xu,Zhuo Li,Wei Zhao,Shanshan Liu,Mingyue Ding
Sustainable green energy has emerged as critically important topics, with catalytic valorization and utilization of biomass receiving considerable attentions in recent years. This study investigates the photocatalytic selective oxidation of 5-hydroxymethylfurfural (HMF) to 2,5-diformylfuran (DFF) using sonochemically synthesized g-C3N4/Bi2MoO6 heterostructured catalyst. A series of composites with varying mass ratios were fabricated, with the 1:1 (w/w) g-C3N4/Bi2MoO6 demonstrating the optimal catalytic performance. Systematic investigations were conducted to elucidate the effects of reaction conditions including irradiation wavelength, solvent polarity, reaction atmosphere, and substrate concentration on photocatalytic efficiency. The system achieved exceptional DFF selectivity of 90.8% with 92.2% HMF conversion under very mild conditions (air atmosphere and 10 W blue LED, 455 nm) with the generation of H2O2 as co-product, demonstrated the extremely high catalytic activity of the catalyst. The catalyst exhibited remarkable stability, as confirmed by recycling tests and post-reaction X-ray diffraction (XRD) characterization. Mechanistic studies through radical quenching experiments and electron paramagnetic resonance (EPR) spectroscopy identified superoxide radicals (·O2−) and photogenerated holes (h+) as the dominant reactive species, propose a dual-pathway oxidation mechanism. In this study, the S-scheme heterojunction charge transfer mechanism was comprehensively validated through systematic characterization and theoretical calculations, highlighting the pivotal role of S-scheme heterojunctions in selective oxidation reactions.
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SENSORS AND ACTUATORS B-CHEMICAL
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2026
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IF 7.7
Shikun Li,Qin Zhou,Junru An,Silong Qiang,Weihao Hu,Zhixiu Sun,Jianjun Liao,Shiwei Lin
Traditional electrochemical methods often face challenges in accurately detecting heavy metal ions in seawater due to high salinity and complex organic matrices. Herein, a porous, defect-rich graphitic carbon nitride/bismuth–bismuth oxide (pdr-g-C 3 N 4 /Bi@Bi 2 O 3 ) composite was fabricated via two-step calcination and hydrothermal assembly, and applied for simultaneous Cd(II) and Pb(II) detection by SWASV. The unique porous structure and abundant defect sites facilitate efficient ion preconcentration and electron transfer, leading to high sensitivity and selectivity. Under optimized conditions in sodium acetate–acetic acid buffer (pH 6.0), the sensor exhibits linear detection ranges of 5–200 ppb for both Cd(II) and Pb(II), with limits of detection (LOD) of 0.513 ppb and 0.313 ppb, respectively. Remarkably, the sensor demonstrates excellent stability and accuracy even in unprocessed seawater samples, achieving LODs of 0.32 ppb for Cd(II) and 10.13 ppb for Pb(II). These results confirm the feasibility of direct, on-site detection of trace heavy metals in complex marine environments, offering a practical strategy for rapid environmental monitoring.
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Small
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2026
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IF 11.8
Kun Gao,Miao Ji,Xinya Chen,Qinghua Liu,Yaning Liu,Zhongyan Gong,Biao Xie,Chaoyang Li,Jiaxin Li,Furong Qiao,Zhihao Lu,Yingying Cai,Gongqiang Li,Gang Lu
Electroreduction of carbon dioxide (CO 2 ER) to carbon monoxide (CO) represents a promising pathway to the production of sustainable fuel and carbon neutrality. Molecular catalysts, such as cobalt phthalocyanine (CoPc), are known to be effective in converting carbon dioxide (CO 2 ) to CO. However, increasing the rate and selectivity of this reaction remains challenging and sometimes complicated. In this work, we report a simple molecule-coadsorption strategy to improve the efficiency of CoPc-catalyzed electrocatalytic conversion of CO 2 to CO on graphitic carbon nitride (g-C 3 N 4 ). By coadsorbing nitropyrene (NPy) molecules, together with CoPc, on the surface of graphitic g-C 3 N 4 via π–π conjugation, the catalytic activity of CoPc increased by 84%, and the Faradaic efficiency (FE) of CO increased up to 98.2% ± 1.6% in a H-type cell. This FE could further improve up to ∼100% in a flow cell. The improved catalysis performance could be attributed to the NPy-modulated change in electronic structure of the cobalt center in CoPc and the modulated reaction thermodynamics. Overall, this work paves a new way for fine modulation of the electronic structure of molecular catalysts for improvements in both activity and selectivity.
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CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Zeen Xu,Xingyue Lei,Ru Jiang,Leihao Zhou,Shentao Jiang,Xianqiang Xiong,Qi Wang,Jianbing Li,Huayue Zhu
Scallion-inspired 3D CMC@NF evaporator was prepared. • Ultrahigh ER of 6.17 kg·m −2 ·h −1 achieved under 1-sun irradiation. • Evaporation enthalpy significantly reduced from 2415 to 828 kJ·kg −1 . • 3D CMC@NF exhibited excellent salt resistance and stable desalination. Due to its ease of operation and minimal environmental impact, solar-driven evaporation technology holds significant potential in addressing the worsening global water crisis. Inspired by the multi-layered coiled scallion, a 3D g-C 3 N 4 /MoS 2 /chitosan hydrogel@nickel foam (CMC@NF) evaporator was fabricated by decorating photothermal g-C 3 N 4 and MoS 2 , along with hydrophilic chitosan onto porous 3D nickel foam. Remarkably, water evaporation enthalpy decreased significantly from 2415 to 828 kJ·kg −1 due to the presence of hydrophilic chitosan. The multi-layered coiled structure of the scallion-like CMC@NF-2 enhances solar reflection and refraction, and enlarges the water evaporation area through its hierarchical interfacial design. Leveraging synergistic material advantages and optimized geometric configuration, the CMC@NF-2 evaporator attained an ultrahigh water evaporation rate of 6.17 kg·m −2 ·h −1 (normalized to the top-irradiation projected area). The CMC@NF-2 system also exhibited outstanding outdoor water evaporation of 74.54 kg·m −2 ·d −1 , an output adequate to satisfy the daily water requirements of 23 adults (based on a standard of 3.2 L·person −1 ·day −1 ). This study significantly enhances the capabilities of existing solar desalination techniques for delivering portable, cost-effective freshwater supplies, and simultaneously provides a thorough physical interpretation and actionable optimization frameworks for CMC@NF-2 systems. Download: Download high-res image (367KB) Download: Download full-size image
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Zipeng Jin,Junhua Wang,Kunting Li,Taibao Xiao,Wa Gao,Lei Xu,Siqi Bao,Baiyan Li
Achieving efficient charge transfer and separation relies on constructing effective electron-transfer channels tailored to composite photocatalysts. Herein, an S-scheme heterojunction was constructed between g-C 3 N 4 and covalent triazine frameworks (CTFs) to establish a directional internal electric field (IEF). The effects of donor (D) chain extension and increased acceptor (A) number on intramolecular electron transport was conducted. DFT calculations and photoelectrochemical tests indicated that, with the stepwise structural evolution from A1-D-A1 (CTF-1) to A1-D-D-A1 (CTF-2) and further to A1-D-A2-D-A1 (CTF-Azo), the electron density within the CTFs framework gradually increased. When integrated into the S-scheme heterojunction, this concerted structural engineering created an electron-rich interface that efficiently channeled electrons to adsorbed oxygen, yielding a 1.89-fold enhancement in·O 2 − generation compared to g-C 3 N 4 . This rational design enabled 1 wt% CTF-Azo/g-C 3 N 4 to achieve 92% degradation of Levofloxacin (LVX) within 120 min under visible light irradiation and demonstrated a 2.61-fold improvement over g-C 3 N 4 along with deep mineralization. A plausible photocatalytic degradation pathway was proposed, and toxicity evaluation confirmed a reduced ecological risk of the generated intermediates. Moreover, 1 wt% CTF-Azo/g-C 3 N 4 demonstrated robust performance in various complex water systems, highlighting its practical potential. This work demonstrates that orchestrating D-A molecular motifs with S-scheme heterojunctions offers a powerful paradigm for precision electron steering toward efficient antibiotic photodegradation.
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MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 10
·679
·
IF 5.4
Wu Siying,Du Tianmei,Ma Mengyun,Pu Fang,Zhang Yanli,Men Xue,Wang Hongbin,Yang Wenrong,Pang Pengfei
The development of a novel molecularly imprinted electrochemical sensor for the sensitive and selective detection of bisphenol A (BPA) is reported, based on a nanocomposite comprising dendritic Pt–Pd bimetallic nanoparticles and graphitic carbon nitride (Pt–Pd NPs/g-C 3 N 4 ). The molecularly imprinted polymer (MIP) was fabricated via electrochemical polymerization on Pt–Pd NPs/g-C 3 N 4 nanocomposite modified screen-printed electrode (Pt–Pd NPs/g-C 3 N 4 /SPE) surface. The synergistic integration of porous Pt–Pd NPs and ultrathin g-C 3 N 4 nanosheets provides a larger effective surface and enhances catalytic activity for BPA determination. The MIP film was fabricated via cyclic voltammetry on the modified electrode, employing BPA as the template molecule and pyrrole as the functional monomer. Following template removal, the resulting molecularly imprinted cavities within the MIP demonstrated high specificity for BPA recognition. The fabricated MIP-based electrochemical sensor exhibited an excellent linear response and high sensitivity for BPA detection over a broad concentration range of 2–100 ng/mL, achieving a limit of detection (LOD) of 0.2 ng/mL (3 σ/S ) and a limit of quantification (LOQ) of 0.6 ng/mL. The MIP-based sensor exhibits outstanding specificity, reproducibility, and operational stability, thereby providing a versatile platform for rapid and ultrasensitive BPA detection—a critical capability for ensuring environmental safety and protecting public health. Graphical
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CATALYSIS TODAY
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2026
·
IF 5.1
Wenxin Jin,Yanting Dou,Baotong Xu,Yuanjin Wang,Qin Zheng,Likun Sheng,Yu Gao,Yang Mu,Guiyan Zhao,Jiqi Zheng,Fu Ding,Yaguang Sun,Yanfeng Bi,Zhenhe Xu
Periodic trends in elemental properties provide a fundamental framework for understanding catalytic behavior, yet their role in photocatalysis remains largely unexplored at the orbital-interaction level. Here, a systematic series of alkaline earth metal (Mg, Ca, Sr, and Ba)-doped graphitic carbon nitride (g-C 3 N 4 ) photocatalysts is developed to reveal how periodic electronic characteristics govern photocatalytic performance. Despite the similar chemical nature of the dopants, both H 2 evolution and H 2 O 2 production exhibit a pronounced volcano-type dependence along the Mg-Ca-Sr-Ba sequence under visible light, with Sr-doped g-C 3 N 4 delivering the optimal performance (329.86 μmol g −1 h −1 for H 2 evolution and 1363.58 μmol g −1 h −1 for H 2 O 2 production). This periodic behavior originates from an orbital-synergy mechanism between the outermost p orbitals of alkaline earth metals and the intrinsic C/N 2 p electronic states of g-C 3 N 4 . Moderate p -orbital reactivity enables enhanced π-conjugation, improved charge delocalization, and reduced kinetic barriers for key reaction intermediates, whereas excessive orbital perturbation disrupts electronic balance and deteriorates catalytic efficiency. These findings establish a periodic orbital-regulation principle governing volcano-type photocatalysis and provide a general design framework linking elemental periodicity with semiconductor catalyst optimization.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Angzhan Li,Dayong Tian,Yao Guo,Xingling Zhang,Shaopeng Zhang,Liu Cheng,Li Wang,Yifeng Zhang,Ning Fu
Perfluorooctanoic acid (PFOA) is currently regarded as a refractory pollutant. The development efficient degradation technologies remains a critical challenge owing to the strong stability of C-F bond. However, current photocatalytic approaches for PFOA degradation suffer from slow reaction kinetics. Herein, a series of ultrathin BiOCl@g-C 3 N 4 (BiCN) was prepared using a hydrothermal method, and their PFOA degradation performance was evaluated. The most effective photocatalyst (BiCN-2) achieved a 92.3% PFOA removal rate within 30 min (rate constant k = 0.1059 min −1 ), with a corresponding defluorination efficiency of 24.8%. Specifically, the exposed (101) facets of BiOCl accelerate electron movement, whereas the BiOCl@g-C 3 N 4 heterojunction interface enhances the separation of photogenerated charges. Additionally, the metallic Bi nanoparticles acted as both electron bridges and sources of hot electrons via the surface plasmon resonance effect, further boosting the reaction. Superoxide radicals, photogenerated electrons, and photogenerated holes were identified as the main reactive species in the degradation reaction. Density functional theory was employed to determine the interaction mechanism between PFOA and the photocatalyst. This study provides insights into an efficient alternative for the photocatalytic degradation of PFOA.
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ELECTROCHIMICA ACTA
·
2026
·
IF 5.8
Wanying Li,Xing Liu,Jiajing Dong,Jiahui Li,Ting-Ting Li,Ching-Wen Lou
A dual modification strategy combining MHNT tubular structure and Fe doping is proposed. • MHNT tubular structure offers high surface area and effective charge transport channels. • Fe doping introduces impurity levels to tailor the band structure of g-C 3 N. • Photoelectrode material maintains stable photoelectrochemical response after one-year ambient storage. Dopamine (DA), a key neurotransmitter in the central nervous system, exhibits concentration abnormalities that are closely associated with various neurological disorders. Thus, its accurate and stable detection in biological samples is crucial for early diagnosis. In this study, using melamine as a precursor, hydrochloric acid-modified halloysite nanotubes (MHNT) as a porous support material, and FeCl 3 ·6H 2 O as an iron source, an Fe-doped graphitic carbon nitride/halloysite nanotube (Fe-g-C 3 N 4 /MHNT) composite photoelectrode material was successfully synthesized via a hydrothermal dispersion combined with high-temperature calcination method. A photoelectrochemical sensor was subsequently constructed for dopamine detection. Fe doping effectively modulated the band structure of g-C 3 N 4 , broadening the visible light absorption range and suppressing the recombination of photogenerated charge carriers. Meanwhile, the tubular structure of MHNT provided a high specific surface area and efficient charge transport pathways. Under optimized conditions, the sensor exhibited good linearity in the concentration ranges of 10–200 μM and 200–2300 μM, with a sensitivity of 0.527 μA·μM −1 ·cm −2 and a detection limit as low as 0.28 μM (S/N = 3). Moreover, the sensor demonstrated excellent selectivity for dopamine in the presence of interfering substances in simulated body fluid. Notably, after one year of storage at room temperature, the sensor retained a stable linear photocurrent response with a detection limit of only 0.39 μM (S/N = 3), indicating outstanding long-term storage stability. This work effectively overcomes the intrinsic drawbacks of g-C 3 N 4 , including insufficient active sites and rapid charge carrier recombination, through the synergistic strategy of MHNT incorporation and Fe doping, providing a viable pathway for the development of highly selective and stable photoelectrochemical sensors. Download: Download high-res image (201KB) Download: Download full-size image
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