JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
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2026
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IF 6.7
Yuhang Li,Haifeng Jiang,Jiahao Qi,Junyu Chen,Wenpeng Hong
This study investigated the catalytic pyrolysis of pine sawdust over transition-metal-modified g-C 3 N 4 catalysts (Ni/g-C 3 N 4 , Zn/g-C 3 N 4 , and Co/g-C 3 N 4 ) to enhance phenolic selectivity and elucidate metal–support synergistic effects. Among these catalysts, Co/g-C 3 N 4 exhibited the best performance in enhancing the relative content of phenolic compounds. Compared with non-catalytic pyrolysis at 550 ℃, the phenolic content increased by 24.66%. In addition, the results indicated that a CO 2 atmosphere negatively affected phenolic formation. The temperature-programmed TG-FTIR and evolved-gas analyses revealed that the presence of the Co/g-C 3 N 4 catalyst could promote the formation of CO and limit the generation of CH 4 and C 2 -C 3 hydrocarbons during the catalytic pyrolysis process. The related mechanism analysis showed that the interaction between Co 2 + /Co 3+ species on g-C 3 N 4 and Lewis-basic N sites enabled an interfacial synergistic effect for the selective formation of catechol and methyl-catechol. Furthermore, the exploratory multi-output regression analysis further verified that catalyst type primarily governed phenolic enrichment, whereas temperature mainly influenced syngas formation. Overall, this study provides a deeper understanding of the reaction pathways for the selective generation of phenolic compounds in biomass catalytic pyrolysis, and offers a practical approach for the integration of experimental analysis and data-driven methods.
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高影响因子
FOOD CHEMISTRY
·
2026
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IF 10.4
Wenjing Liu,Linchun Nie,Dejing Meng,Rui Yang,Haobo Yang,Shuwen Cao,Jianzhi Wang,Qingxiang Zhou
Dispersed loading of MnO 2 on g-C 3 N 4 resulted in enhanced oxidase-like activity. • MnO 2 @g-C 3 N 4 nanozyme exhibited excellent selectivity to carbaryl • Target nanozyme showed good anti-interference ability • Smartphone-assisted visual detection achieved good sensitivity and reliability. In present work, MnO 2 @g-C 3 N 4 nanozyme was synthesized via a calcination-hydrothermal two-step method to achieve enhanced oxidase-like activity based on the conception of electron transfer regulation and effectively loading for avoiding agglomeration to expose more active sites. Herein, g-C 3 N 4 served as a dispersing substrate for MnO 2 with oxidase-like activity and regulating the interfacial electron transfer, and their synergistical catalytic effect accelerated the conversion of dissolved oxygen to superoxide anion radicals (•O 2 − ), which oxidized 3,3′,5,5′-tetramethylbenzidine (TMB) to blue products. Carbaryl can be adsorbed on g-C 3 N 4 surface through π-π stacking interactions, while its carbamate group can be bound to the active centers of MnO 2 . By Lineweaver-Burk plot method, the steady-state kinetic analysis showed that carbaryl had a mixed inhibitory effect on electron transfer and the production of superoxide anion radical (•O 2 − ). Based on this principle, a smartphone-based colorimetric sensor was constructed for carbaryl detection, which exhibited a linear response in the range of 6.3–210.2 μM, with a detection limit of 3.79 μM and a quantitation limit of 12.64 μM. The method achieved satisfactory recoveries (94.3–107.5%) for spiked fruit peel samples and owned great application prospect.
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PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
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IF 19.7
Juan Long,Gui Yang,Yang Wu,Lin Wang,Yawen Xiao,Shiping Zhang,Huachao Che,Juhong Zhan,Xiaoyong Wu,Bin Huang,Fengzhi Jiang,Shaowen Cao,Xuejun Pan
Ultrathin g-C 3 N 5 with Na-K sites, N-vacancies, and –C N was synthesized. • CN-Na-K yields 4739.89 μmol‧g −1 ‧h −1 H 2 O 2 under aeration-free conditions. • –C N and N-vacancies synergistically boost π-electron delocalization. • Na-K dual sites drive both ORR and WOR pathways for H 2 O 2 production. Photocatalytic solar-driven H 2 O 2 synthesis offers a sustainable energy route but is often limited by the need for supplemental oxygen. To overcome barriers, a distinctive ultra-thin g-C 3 N 5 nanosheet with cyano groups (–C N), N-vacancies, and Na-K dual active sites (CN-Na-K) was structured for H 2 O 2 production in natural-oxygen-conditions (aeration-free). The introduction of the –C N function as an electron pump to construct an internal electric field (IEF) promoted charge separation. Simultaneously, N-vacancies broke the structural localization to enhance π-electron delocalization, creating high-speed channels for carrier transport. Crucially, the Na-K dual sites acted as catalytic centers that enabled the water oxidation reaction (WOR) by driving the formation of key intermediates (*O 2 , *OOH, and *OH), where Na + acted as a powerful electron sink, and K + promoted excited-state electrons and stabilized holes. Therefore, the –C N, N-vacancies, and Na-K dual active sites synergistically promoted an enhanced H 2 O 2 production rate of CN-Na-K (1260.03 μmol‧g −1 ‧h −1 in LED lamp and 4739.89 μmol‧g −1 ‧h −1 in Xe lamp) under aeration-free conditions. Besides, characterizations and density functional theory (DFT) calculations confirmed the CN-Na-K system produced H 2 O 2 via a dual-channel pathway for the oxygen reduction (ORR) and WOR. This work provides a systemic design for electronic delocalization and dual active site engineering to achieve efficient aeration-free H 2 O 2 production. Download: Download high-res image (262KB) Download: Download full-size image
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高影响因子
Applied Materials Today
·
2026
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IF 7
Madiha Rafiq,Dan Liao,Changkun Liu
Ternary g-C 3 N 4 /Ti 3 C 2 T x /MIL-101(Fe) photocatalyst was constructed via in situ assembly. • Ti 3 C 2 T x promotes interfacial charge separation and accelerates electron transfer. • Rapid in situ H 2 O 2 generation enables an oxidant-free visible-light photo-Fenton process. • CTF achieves efficient, broad-spectrum degradation of dyes and PPCPs. Visible-light photo-Fenton oxidation represents a promising strategy for removing dyes and pharmaceuticals/personal care products (PPCPs), which are persistent water contaminants. However, its broader application is constrained by challenges such as inefficient charge separation and dependence on externally added hydrogen peroxide (H 2 O 2 ). In this study, a ternary g-C 3 N 4 /Ti 3 C 2 T x /MIL-101(Fe) photocatalyst was synthesized via the in-situ growth of MIL-101(Fe) on g-C 3 N 4 /Ti 3 C 2 T x , enabling efficient visible-light-driven, zero-external H 2 O 2 -added photo-Fenton degradation of organic pollutants. The hybrid system exhibits significantly enhanced oxygen activation and interfacial electron-transfer capability, with in situ H 2 O 2 generation rates about three times higher than those of pristine g-C 3 N 4 . Under visible-light irradiation, the composite continuously produces reactive oxygen species ( ∙ O 2 - , and ∙ OH) at substantially higher levels than g-C 3 N 4 and g-C 3 N 4 /MIL-101(Fe), indicating promoted charge separation and faster interfacial electron transfer. As a result, the catalyst enables broad-spectrum pollutant removal within 60 min, achieving degradation efficiencies of 99.78% (methylene blue), 99.49% (rhodamine B), 88.27% (tribromophenol), 61.50% (doxycycline hydrochloride), and 78.98% (levofloxacin). Overall, rapid in situ H 2 O 2 formation, coupled with efficient ROS generation, enables high-performance pollutant degradation without the need for external oxidant dosing, providing a green strategy for degrading dyes and PPCPs under visible light. Download: Download high-res image (174KB) Download: Download full-size image A ternary g-C 3 N 4 /Ti 3 C 2 T x /MIL-101(Fe) photocatalyst enables visible-light-driven, oxidant-free photo-Fenton degradation of dyes and PPCPs through MXene-promoted charge separation and rapid in situ H 2 O 2 generation. The self-generated H 2 O 2 activates Fe 3+ /Fe 2+ cycling to continuously produce h + , ∙O 2 - , and ∙OH, achieving efficient pollutant mineralization.
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高影响因子
CARBOHYDRATE POLYMERS
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2026
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IF 13.2
Bocan Yang,Linwan Ji,Shujuan Liu,Jiaqi Wang,Jinghuai Zhang,Liangcan He,Shaoqin Liu
With the rapid development of global industrialization, demand for oil-water separation materials that can handle complex scenarios is increasing. Herein, a multifunctional bacterial cellulose (BC) derived g-C 3 N 4 /C composite aerogel for oil-water separation is proposed through a novel simultaneous fabrication process of converting raw BC membranes into carbon aerogels, doping N element into carbon skeletons and realizing in situ deposition of g-C 3 N 4 . The resultant g-C 3 N 4 /C composite aerogel integrates large absorption capacity, flame retardancy, antibacterial activity, hyperelasticity and wide operating temperature. The BC-derived g-C 3 N 4 /C composite aerogel exhibits a maximum adsorptive capacity of 188 g/g for dichloroethane and 73 g/g for n-hexane, much larger than the reported range of 65–135 g/g. Gravity-driven oil-water separation results demonstrate fluxes of 2818.4 L·m −2 ·h −1 for n-hexane and 2000 L·m −2 ·h −1 for ethyl acetate. Ten adsorption-combustion cyclic tests indicate combustion of organic solvents does not compromise adsorption performances, with n-hexane capacity retaining 97.6% of the initial value. Simultaneously, the composite aerogel shows an antibacterial rate as high as 96.3%. In addition, hyperelasticity is exhibited, with merely 0.75% irreversible deformation after 10,000 compression cycles. This effective strategy is expected to provide more possibilities for oil-water separation applications.
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高影响因子
Journal of Environmental Chemical Engineering
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2026
·Vol. 14
·期 5
·124801
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IF 7.5
Fei Liu,Gaopeng Wu,Lihao Chen,Guohao Shi,Liwen Tang,Bolun Ji,Jianwei Li,Xinhai He
Industrial oily wastewater and water-in-oil (W/O) emulsions are difficult to treat because of the high stability of dispersed water droplets, while conventional superhydrophobic membranes often suffer from poor durability and performance degradation under harsh operating conditions. Therefore, the development of robust superhydrophobic membranes with high separation efficiency and long-term stability remains a significant challenge. To address these issues, a high-adhesion superhydrophobic SiC/SiO 2 fibrous membrane was fabricated through covalent grafting of octyltriethoxysilane (OTES) onto a hierarchical ceramic framework. The abundant surface hydroxyl groups provided active anchoring sites for the formation of a crosslinked polysiloxane network, while the optimized grafting conditions promoted a high-adhesion superhydrophobic state with pronounced liquid pinning behavior, consistent with the Cassie-impregnating regime. The resulting membrane exhibited a water contact angle (WCA) of 153.3° and maintained stable superhydrophobicity after exposure to acidic, alkaline, and high-temperature environments. Benefiting from the synergistic effects of hierarchical pore architecture and interfacial wettability, the membrane achieved separation efficiencies above 98.5% for various W/O emulsions, together with a maximum permeation flux of 1305 L·m −2 ·h −1 at 3.0 bar. In addition, the membrane demonstrated excellent anti fouling performance and long-term operational stability during continuous filtration and cyclic separation tests. This work provides a feasible strategy for engineering high-adhesion Cassie-impregnating wetting interfaces on electrospun SiC/SiO 2 ceramic fibrous membrane and offers a promising route for efficient oil-water separation under harsh conditions.
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高影响因子
WATER RESEARCH
·
2026
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IF 12.8
Shao YiFan,Ruirui Liu,Yongquan Zhou,Jianming Pan
Selective boron capture from hypersaline brines remains challenging because existing adsorbents generally suffer from three unresolved limitations: low metal-site activity toward neutral boric acid, poor anti-interference performance in highly saline matrices, and an unclear molecular-level activation mechanism. Here, we report an interfacial N-vacancy-engineered Co 3 O 4 @g-C 3 N 4 heterojunction (CoCN) for selective boron recovery, constructed by coupling ZIF-67-derived porous Co 3 O 4 with nitrogen-vacancy-rich ultrathin g-C 3 N 4 nanosheets. Batch adsorption experiments, real-brine tests, and density functional theory (DFT) calculations collectively show that interfacial N vacancies induce local charge redistribution and render adjacent Co sites more electron-deficient, thereby enhancing their Lewis acidity toward boric acid. This defect-regulated interfacial activation changes boric acid adsorption from thermodynamically unfavorable on the pristine interface (ΔG = +1.41 eV) to favorable on the defective interface (ΔG = −4.28 eV), promoting Co-O-B bond formation. As a result, the optimized CoCN-5 delivers a boron adsorption capacity of 128.5 mg g −1 at 25 °C within 120 min, markedly higher than that of pristine Co 3 O 4 , and achieves boron uptakes of 81 and 79 mg g −1 in real LaGuoCuo and ChaErHan salt-lake brines, respectively, while maintaining high selectivity against major coexisting ions.
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高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
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2026
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IF 1.7
Sun Yubing,Zeng Nalan,Zhu Weiyu,Tang Shuai,Lu Xirui
The combined pollution of radionuclides, heavy metals and organics during uranium mining (i.e., association/coexist with heavy metals) or reprocessing of spent fuel (i.e., organic extraction) has become a prominent issue nowadays. Herein, the synergetic removal mechanism of U(VI), Cr(VI) and bisphenol(BPA) on porous covalent organic framework/graphitic carbon nitride (COF/g-C 3 N 4 ) was investigated using optical, microscopic and spectroscopic techniques. Compared to g-C 3 N 4 (1%), the high photocatalytic reduction (77%) and the excellent stability (90% after 5 recycles) of U(VI) on COF/g-C 3 N 4 could be attributed to the highly efficient separation of photogenerated carrier and wide response range of COF/g-C 3 N 4 under visible light (low band gap of 1.98 eV). In the ternary system, the increased removal of U(VI) on COF/g-C 3 N 4 was due to the consumption of h + by Cr(VI) and BPA, whereas the further increase of Cr(VI) and BPA inhibited U(VI) removal due to the competition of active sites. The interaction mechanism of U(VI) on COF/g-C 3 N 4 was ascribed to superoxide radicals by trapping and XPS analysis. These findings are crucial for the actual application of COF/g-C 3 N 4 on simultaneous removal of radionuclides, heavy metals and organic in complexed systems. Graphical abstract
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Jiayang Zhao,Gang Liu,Xinmei Liu,Limin Dong,Dongbo Wang,Fei Li,Yuewu Huang,Zhitao Yang,Wenlong Yang,Liancheng Zhao
The practical implementation of semiconductor photocatalysis is often impeded by three key challenges: restricted light absorption, rapid recombination of photogenerated charge carriers, and inadequate stability in complex aqueous environments. In this work, a g-C 3 N 4 /BiOCl heterojunction photocatalyst was successfully fabricated. The synergistic effects of its porous structure, oxygen vacancies, and Bi–N bonds significantly boost the photocatalytic performance. Photoelectrochemical analyses reveal that the heterojunction not only extends the optical absorption edge to the visible region but also enhances the photocurrent response and reduces charge transfer resistance, leading to efficient separation and transport of photogenerated carriers. Under irradiation with a 300 W xenon lamp equipped with a 420 nm cutoff filter, the g-C 3 N 4 /BiOCl heterojunction exhibited significantly enhanced photocatalytic activity in the degradation of Rhodamine B (RhB) and reduction of hexavalent chromium (Cr(VI)) relative to pristine g-C 3 N 4 and BiOCl. Notably, the g-C 3 N 4 /BiOCl-2 sample achieved 99.12% removal of 20 mg/L Cr(VI) within 25 min, with a reaction rate constant of 0.10098 min −1 —1.88-fold and 2.72-fold higher than those of pristine BiOCl and g-C 3 N 4 , respectively.Environmental adaptability studies revealed that this heterojunction exhibited optimal Cr(VI) reduction performance under acidic conditions (pH=3). Its photocatalytic reduction efficiencies in deionized water, tap water, river water, and industrial wastewater were 97%, 87.6%, 81.4%, and 73.1%, respectively, highlighting its strong practical applicability in diverse aqueous environments. Common ion influence experiments further confirmed that NH 4 + promotes the reduction process, while CO 3 2- and PO 4 3- inhibit the reaction due to the alkaline environment generated by hydrolysis. Cl - , SO 4 2- , and Ca 2+ had negligible effects. Cycling tests revealed that g-C 3 N 4 /BiOCl-2 maintained over 85% photocatalytic activity after five cycles, exhibiting superior durability compared to pure g-C 3 N 4 (11.1%) and BiOCl (39.7%). This work enhance the photocatalytic reduction of heavy metals in complex aqueous environments through the construction of a highly efficient and stable S-scheme heterojunction photocatalyst, thereby offering theoretical and experimental foundations for the degradation of industrial dye pollutants.
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高影响因子
Journal of Water Process Engineering
·
2025
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IF 6.7
Ning Liu,Pengxiao Liu,Zhen Du,Zhenxing Zeng,Yongqiu Zheng,Chenyang Xue,Jing Lu
Advancing novel photocatalytic systems for efficient antibiotic removal is a key strategy for sustainable water purification. However, it remains technically challenging to balance high charge separation efficiency with broad-spectrum light absorption. Herein, the g-C 3 N 4 /Bi/BiPO 4 composite photocatalyst featuring a Z -scheme heterojunction mediated by Bi nanoparticles was synthesized and systematically evaluated. This unique structure integrates surface plasmon resonance (SPR) to simultaneously enhance charge separation and visible light absorption, addressing limitations of traditional g-C 3 N 4 -based systems. Photoelectrochemical characterization confirmed its superior charge separation and rapid electron transfer. Energy band analyses via UV–Vis DRS, XPS valence, and Mott-Schottky tests revealed that the Z -Scheme heterojunction, formed through an internal electric field and mediated by Bi, effectively enhanced the processes of charge separation and light absorption synchronously. Under simulated solar light irradiation, the composite exhibited a 97.5 % tetracycline degradation rate within 90 min, with a reaction rate constant of 4.00 × 10 −2 min −1 , significantly outperforming individual g-C 3 N 4 and BiPO 4 catalysts. Reactive species trapping experiments identified ·OH, ·O 2 − , 1 O 2 and h + as the dominant reactive species in tetracycline degradation. Overall, this study provides a solid theoretical foundation and experimental support for the practical application of photocatalytic technology in wastewater treatment.
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高影响因子
Chemistry-Switzerland
·
2025
·Vol. 7
·期 5
·168
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IF 2.4
Hongwei Pang,Guangyao Liu,Xinming Wang,Shuhe Liu,Juan Wang,Jinxian Cui,Jie Zhou,Ziyan Zhou
Photocatalytic oxidation technology harnesses solar energy for pollutant mineralization, presenting significant potential for environmental applications. A critical bottleneck remains the development of high-performance photocatalysts. This study centers on the non-metallic semiconductor material graphitic carbon nitride (g-C3N4). To overcome the inherent limitations of pristine g-C3N4, including limited surface area, rapid charge carrier recombination, and inadequate active sites, it implements surface engineering strategies employing acidic (H2SO4) or basic (K2CO3) agents to modulate microstructure, introduce defect sites (cyano/amino groups), and optimize bandgap engineering. These modifications synergistically enhanced photogenerated charge carrier separation efficiency and surface reactivity, leading to efficient dye degradation. Notably, the K2CO3-modified catalyst (g-C3N4-OH), synthesized with a mass ratio of m(g-C3N4):m(K2CO3) = 1:1, achieved 92.2% Rhodamine B degradation within 50 min under visible light, surpassing pristine g-C3N4(20.6%), the optimized H2SO4-modified sample (g-C3N4-HS, 60.9%), and even template-synthesized g-C3N4-SBA (79.6%). The g-C3N4-OH catalyst demonstrated exceptional performance under both visible light and natural solar illumination. Combining facile synthesis, cost-effectiveness, superior activity, and robust stability, this work provides a novel approach for developing high-efficiency non-metallic photocatalysts applicable to dye wastewater.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2025
·
IF 3.9
Wu Yue,Yuchao Qi,Xue Ying,Hao Xiaonan,Sun Shulin,Zhao Jingxuan
The escalating industrial activities in metal processing, textile manufacturing, petroleum refining, leather production, and pulp industries have generated substantial amounts of industrial wastewater, presenting critical environmental challenges that require immediate attention. In this study, we developed a novel polyacrylonitrile grafted ionic liquid (PAN-g-IL) membrane through γ-ray irradiation-induced grafting of 1-vinyl-3-ethylimidazolium bromide onto polyacrylonitrile, followed by non-solvent induced phase separation (NIPS) membrane fabrication [1] . The developed membrane exhibited exceptional separation performance for both dye-laden and oil-contaminated wastewater systems. The PAN-g-IL membrane demonstrated a pure water flux of 358.1 L m −2 h −1 with remarkable rejection rates exceeding 98% for cationic dyes, and for oil–water emulsions has a very good retention performance [2] , indicating superior antifouling properties and long-term operational stability.
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高影响因子
危险品化学品经营许可证（带存储）