JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Jin Huang,Yuqi Dong,Yang Li,Renlong Zhou,Shuoqing Yan,Jun He
A hierarchical g-C 3 N 4 /FeCo@CNT composite is fabricated by a three-stage strategy. • CNT shells protect FeCo cores from thermal oxidation and electrochemical corrosion. • At 400 °C, RLmin reaches −22.01 dB with 4.03 GHz EAB, showing thermal resilience. • This work unites broadband absorption, thermal stability, and corrosion resistance. Graphitic carbon nitride (g-C 3 N 4 ) is emerging as a promising microwave absorbing material owing to its chemical/thermal stability and tunable dielectric properties. However, its intrinsic low electrical conductivity and the lack of magnetic loss mechanism present obstacles to practical applications. Herein, a hierarchically structured g-C 3 N 4 /FeCo@CNT composite was fabricated via a three-stage sequential strategy. The hollow tubular g-C 3 N 4 framework serves as a low-density dielectric scaffold and facilitates multiple internal reflections, whereas the FeCo@CNT hybrids establish a conductive network and contribute substantial magnetic loss. Moreover, the CNT shell effectively protects the FeCo cores against thermal oxidation and electrochemical corrosion. Benefiting from the balanced dielectric–magnetic synergy, the composite achieves an effective absorption bandwidth (EAB) of 4.07 GHz at a thickness of only 2.2 mm, with a minimum reflection loss ( RL min ) of −17.86 dB at room temperature. Notably, the RL min further reaches −22.01 dB and the corresponding bandwidth remains 4.03 GHz at 400 °C, underscoring exceptional high-temperature resilience. This research offers new insights into the rational design of g-C₃N₄-based microwave absorbers that simultaneously reconcile broadband microwave absorption with high-temperature stability and corrosion resistance.
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高影响因子
BIOSENSORS & BIOELECTRONICS
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2026
·
IF 11.8
Jixiang Li,Genyun Zhou,Fei Wu,Jinping Yuan,Linan Hu,Qiang Zhang,Wenge Yang,Yonghong Hu
Tetracycline (TC) is a persistent broad-spectrum antibiotic that poses significant threats to human health and the environment. Herein, we developed an ultrasensitive photoelectrochemical (PEC) biosensor for rapid TC detection. The sensor utilizes a flexible Si-doped carbon fiber membrane derived from polyacrylonitrile and dimethyldiethoxysilane as a conductive substrate. After coating with poly (3,4-ethylenedioxythiophene) and polystyrene sulfonate (PEDOT: PSS), a ternary UiO-66-NH 2 /Ag/g-C 3 N 4 Z-scheme heterojunction is assembled as the photoactive core, followed by electrostatic immobilization of laccase to achieve specific TC recognition. Electrochemical characterization confirmed that laccase improved both the biocatalytic activity and electron-transfer efficiency of the electrode. Combined with transient photocurrent measurements and molecular dynamics simulations, the sensing mechanism was shown to be dominated by steric hindrance arising from TC occupation of the laccase active site, followed by oxygen consumption, yielding a detection limit of 0.012 μM over 0-30 μM TC (R 2 = 0.993). UV diffuse reflectance spectra (UV-DRs), Mott–Schottky analysis (M-S), and electron paramagnetic resonance (EPR) measurements further verified that the Ag-mediated Z-scheme pathway significantly enhanced carrier separation. With excellent stability and anti-interference performance in real river water and complex matrices, this work provides an effective strategy for antibiotic detection by integrating flexible carbon-based substrates with advanced Z-scheme photocatalytic systems.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Fuhua Mao,Decai Yang,Kexin Shi,Qiqi Zhou,Chao Qu,Feixing Li,Yujia Lv,Dawei Liang,Qing Ye
Tetracycline (TC) residues in the environment pose serious ecological and health risks, yet conventional treatment methods are often inefficient. Herein, a composite photocatalyst composed of porous graphitic carbon nitride nanosheets (CN) and FeNi 2 S 4 microspheres (FNS) was successfully synthesized via calcination, solvothermal, and electrostatic self-assembly methods. The as-prepared FNS/CN heterojunction exhibited outstanding performance in the visible-light-driven activation of H 2 O 2 for TC degradation, achieving a removal efficiency of 88.9% within 100 min, with a reaction rate constant (k) of 0.0202 min −1 , which is 2.4 and 8.1 times higher than that of pure CN and FNS, respectively. The enhanced activity was attributed to the Z-scheme heterojunction structure, which facilitated efficient charge separation, broadened visible-light absorption, and provided abundant active sites. Meanwhile, the introduction of FNS established an efficient photo-assisted Fenton-like system. Photogenerated electrons continuously accelerated the Fe 3+ /Fe 2+ and Ni 3+ /Ni 2+ redox cycles to in situ activate H 2 O 2 , significantly promoting hydroxyl radical generation. Mechanistic studies revealed that ·O 2 - , 1 O 2 and ·OH were the main active substances, and holes cooperatively promoted the degradation. The catalyst also demonstrated excellent stability and recyclability over five consecutive cycles. This work provides a promising strategy for designing efficient photocatalysts for antibiotic degradation via H 2 O 2 activation.
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ENVIRONMENTAL RESEARCH
·
2026
·
IF 8.2
Dongyuan Li,Xiaojun Peng,Rui Zhang,Yadong Chen,Peng Song,Wei Chen,Da Wang
The ubiquitous presence of emerging contaminants (ECs) such as antibiotics and synthetic dyes in aquatic systems necessitates advanced remediation technologies. However, conventional polyvinylidene fluoride (PVDF) membranes often suffer from severe fouling and rapid flux decline due to their inherent hydrophobicity, severely limiting their long-term applicability. This study presents the rational design of Ti-MOF/CN/PVDF composite membranes via integrated solvothermal synthesis of Ti-MOF/g-C 3 N 4 (CN) heterojunctions and nanoparticle-regulated phase inversion. Comprehensive characterization (XRD, XPS, SEM-EDS, BET, AFM) confirmed the successful fabrication of the heterojunction membrane. XPS and XRD analyses confirmed the formation of covalent bonds at the (Ti-O-N) interface and lattice strain induced by the nanoparticle filler, effectively suppressing PVDF crystallization. Ti-MOF/CN exhibits a unimodal particle size distribution (D50 ≈ 400 nm) and high BET specific surface area (72.44 m 2 g −1 ). Its uniform dispersion in PVDF increases the membrane pore size from 28.1 nm in pristine PVDF to 38.7 nm at 1 wt% Ti-MOF/CN, significantly enhancing the overall porosity. The top-performing M3 composite membrane demonstrated exceptional multifunctionality: it achieved retention rates exceeding 90% for multiple dyes (Rhodamine B, Methyl Blue, Malachite Green) and antibiotics (Tetracycline). Long-term retention experiments were conducted on complex wastewater containing mixed dyes, alongside photodegradation tests under simulated solar radiation conditions (AM 1.5G, 100 mW cm −2 ). Results indicate over 95% retention of mixed pollutants. Visible light irradiation significantly enhances the M3 membrane's FRR to 91.6%, further demonstrating the Ti-MOF/CN composite membrane's robust long-term operational stability and self-cleaning capability for photocatalytic degradation of aqueous pollutants.
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高影响因子
Surfaces and Interfaces
·
2026
·
IF 6
Ruoyun Gao,Zhinan Xia,Pengfei Li,Ruijuan Bian,Nianbo Zhang,Jingping Lu,Chunhuang Fan,Lifei Liu,Yang Deng
This study addressed the critical need for antibiotic pollution control in industrial wastewater by successfully constructing a two-dimensional/two-dimensional NiFe-LDH/C 3 N 4 Z-type heterojunction photocatalyst with strong chemical bonding through an innovative interfacial chemical engineering strategy. Thermal activation was used to expose N active sites on the C 3 N 4 surface, and in-situ growth of NiFe-LDH nanosheets was achieved via co-precipitation. Stable Ni-N and Fe-N coordination bonds were constructed at the heterojunction interface, forming an efficient interfacial charge transport channel that significantly suppressed the recombination of photogenerated carriers. Material characterization showed that the catalyst possessed a broadened visible light response, enhanced specific surface area, and optimized charge separation efficiency. Photocatalytic experiments demonstrated excellent degradation performance for fluoroquinolone antibiotics such as norfloxacin, ciprofloxacin, and ofloxacin. Norfloxacin achieved a 90% removal rate within 120 minutes, with good cycling stability. Mechanistic studies revealed that the degradation process is primarily driven by superoxide radicals (·O 2 - ). This work not only proposed a novel method for constructing heterostructures through "surface active site design and in-situ interface bonding", but also experimentally revealed the key role of interfacial chemical bonding in regulating band structure, promoting charge separation and enhancing material stability, providing important theoretical and practical basis for the rational design of efficient and stable photocatalytic materials under the guidance of surface and interface science.
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高影响因子
WATER AIR AND SOIL POLLUTION
·
2026
·Vol. 237
·期 13
·779
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IF 3.5
Peng Ziling,Wang Xiu,Tan Fatang,Zhou Xian,Fan Zeyu,Lu Qi,Chen Xia,Shi Yu,Xia Yu
For the first time, a series of N-doped graphitic carbon-modified g-C 3 N 4 samples were synthesized via thermal polycondensation by incorporating trace amounts of chitosan into melamine precursors. The photocatalytic performance of the samples was evaluated through Rhodamine B (RhB) degradation under visible-light irradiation. The photocatalyst prepared with 50 mg chitosan achieved complete degradation of 10 mg/L RhB within 30 min, outperforming pristine g-C 3 N 4 . After five consecutive cycles, the photocatalyst maintained 91% degradation efficiency within 30 min while preserving its original crystalline structure, demonstrating outstanding stability and reusability. The large specific surface area, enhanced electron transfer efficiency, extended visible light absorption and low photogenerated electron–hole recombination rate were considered to contribute to the extraordinary visible-light-driven (VLD) photocatalytic activity of N-doped graphitic carbon-modified g-C 3 N 4 . Furthermore, a scavenger study was conducted to identify the dominant reactive oxygen species (ROS) involved in the photocatalytic degradation of RhB, providing deeper insights into the underlying reaction mechanisms.
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高影响因子
NEW JOURNAL OF CHEMISTRY
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2026
·
IF 2.6
Yanan Li,Yixiao Shi,Lei Li,Lijun Wang
The development of efficient heterogeneous catalysts for the sustainable upgrading of biomass-derived platform molecules remains a pivotal challenge. Herein, we report a facile strategy for constructing active Lewis acid–base pairs by anchoring well-dispersed zirconium–oxo species onto thermally exfoliated ultrathin g-C3N4 nanosheets. By simply extending the calcination time of melamine to 10 hours, g-C3N4 is simultaneously synthesized and exfoliated into nanosheets with a thickness of ~1.2 nm (approximately 3 layers). These nanosheets offer abundant pyridinic and pyrrolic N atoms, which effectively immobilize the zirconium–oxo species through robust Zr–N coordination, yielding the g-C3N4 /Zr(IV) composite catalyst. In the transfer hydrogenation of furfural to furfuryl alcohol using 2-propanol as the hydrogen donor, this catalyst achieves >90% conversion and >99% selectivity under mild conditions (120 °C). Structural and catalytic characterizations indicate that prolonged calcination increases the specific surface area and the density of edge N–H functional groups, facilitating the generation of more Zr–N active pairs. Poisoning experiments confirm the indispensable role of Lewis acid sites in achieving high conversion and highlight the essential function of basic sites in maintaining exceptional selectivity toward furfuryl alcohol. Furthermore, isotopic labeling studies verify that the hydroxyl hydrogen in furfuryl alcohol originates exclusively from the hydroxyl group of 2-propanol, while its α-hydrogen is supplied from the α-position of 2-propanol. The catalyst demonstrates robust structural and crystalline stability over five consecutive reaction cycles. Notably, partial activity could be restored by methanol washing, and the remaining deactivation is attributed to minimal Zr leaching. This work highlights the potential of nitrogen-rich two-dimensional supports in anchoring zirconium–oxo species for efficient and sustainable biomass conversion.
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高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Qingmei Yang,Yirui Lin,Yihui Qiu,Chengxiu Wu,Xiaojiao Zhang,Wanxiong Lin,Beibei Wang,Ying Hou,Yanping Lin,Yue Jia
Achieving consistent fabrication of photoelectrochemical (PEC) biosensors remains a challenge, largely due to the variability introduced by manual drop-casting of photoactive materials. To address this limitation, we report a one-step laser-sputtering technique that enables the construction of a standardized sensing platform for ultrasensitive detection of Protein Induced by Vitamin K Absence or Antagonist-II (PIVKA-II), a clinically relevant biomarker for hepatocellular carcinoma. In this process, a mixed target of titanium and melamine is irradiated, where laser-induced thermal and photon pressure effects simultaneously synthesize a TiO 2 /g-C 3 N 4 heterojunction and uniformly sputter-deposit it onto an ITO electrode. This laser-engineered photoanode exhibits excellent batch-to-batch consistency. After immobilizing anti-PIVKA-II antibody, the resulting immunosensor quantifies PIVKA-II based on the specific immunocomplex-triggered photocurrent decrease, achieving a wide linear range from 0.5 ng/mL to 1 μg/mL and a low limit of detection (LOD) of 0.13 ng/mL with high specificity, stability, and reproducibility. Beyond offering a dependable tool for clinical PIVKA-II analysis, this work establishes a generalizable laser-based manufacturing strategy that paves the way toward standardized production of next-generation PEC biosensors.
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高影响因子
DIAMOND AND RELATED MATERIALS
·
2026
·
IF 5.2
Jiaqi Yu,Shiwen Wang,Minghong Xie,Qiong Wu,Qing Shu
To overcome rapid charge recombination, a direct Z -scheme Zn 3 V 2 O 8 /g-C 3 N 4 heterojunction was designed, thus boosting photocatalytic performance. A suite of composite photocatalysts, with meticulously tuned Zn 3 V 2 O 8 mass ratios (x = 40, 60, and 80 wt%), were synthesized via a facile hydrothermal route. Comprehensive characterization, including XRD, SEM, UV–Vis DRS, PL spectroscopy, and photo-electro-chemical measurements confirmed the formation of intimate interfacial contact between Zn 3 V 2 O 8 and g-C 3 N 4 . This tailored interfacial architecture effectively promotes visible-light absorption and facilitates the separation and transfer of photo-generated charge carriers. Notably, the Zn 3 V 2 O 8 (60 wt%)/g-C 3 N 4 composite achieved 91% degradation of RhB within 120 min under simulated solar irradiation, substantially outperforming pristine g-C 3 N 4 (57%). Radical trapping experiments and electron spin resonance (ESR) spectroscopy identified superoxide radicals ( O 2 − ) and holes (h + ) as the primary active species. Based on these findings, a direct Z -scheme charge transfer mechanism is proposed, wherein photoinduced electrons in the conduction band of Zn 3 V 2 O 8 recombine with holes in the valence band of g-C 3 N 4 . This synergistic recombination pathway preserves the most energetic electrons in g-C 3 N 4 and holes in Zn 3 V 2 O 8 , endowing the system with strong redox capacity for the simultaneous generation of O 2 − and OH radicals, which collaboratively drive the efficient degradation of RhB. This study provides a rational design framework for constructing high-performance g-C 3 N 4 -based Z -scheme photocatalytic systems.
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高影响因子
Surfaces and Interfaces
·
2026
·
IF 6
TianXiang Li,RuoKun Jia,PengPeng Wang,DuMin Li,JiaHui Chen,Xubo Song
Through a simple hydrothermal strategy, a strongly coupled g‑C 3 N 4 /Hf‑MOF heterojunction (CN/HUN) was successfully prepared, achieving efficient and selective photocatalytic CO 2 reduction to methanol without sacrificial agents. After reacting for 3 hours under simulated sunlight conditions without a sacrificial agent, the optimized CN/HUN 7 catalyst achieved a cumulative methanol yield of 520.48 μmol g -1 and a selectivity of 83%. Systematic characterization indicates that the strong interfacial interactions and electronic coupling between g-C 3 N 4 and Hf-MOF effectively accelerate charge separation, suppress carrier recombination, and significantly reduce charge transfer resistance. Furthermore, the Hf-MOF forms a Z-type heterojunction structure with g-C 3 N 4 , thereby enabling directed electron transfer. While electrons in the conduction band (CB) of the Hf-MOF are transferred to the valence band (VB) of g-C 3 N 4 , the unsaturated Hf 4+ sites may promote CO 2 adsorption and activation through Lewis acid-base interactions and are expected to stabilize key intermediates during the CO 2 reduction process, thereby enhancing the performance of CO 2 reduction to methanol. We demonstrate a viable route to construct tightly integrated MOF heterojunctions for high-performance photocatalytic CO 2 reduction to fuels. Download: Download high-res image (236KB) Download: Download full-size image
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高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·123517
·
IF 7.5
Bingxin Zhou,Yuebin Liu,Shuangshuang Ding,Leixia Meng,Huijuan Jing,Chaochao Tian,Ruijie Guo,Sheng Liu,Aiguo Zhou,Gui-Fang Huang,Wei-Qing Huang
To address the critical issues in nickel single-atom catalysts, including severe aggregation, poor controllability of coordination environment, and weak metal-support interaction. Herein, melamine-cyanuric acid supramolecules were used as precursors. One-step air calcination and pre-oxidation followed by argon calcination were adopted to fabricate a series of Ni single-atom decorated g-C 3 N 4 photocatalysts (CN-Ni x -I and CN-Ni x -II series). The pre-oxidation treatment significantly increased the specific surface area of the material, narrowed the band gap, and shifted the conduction band potential to a more negative direction, thereby enhancing the light-harvesting capability and the separation efficiency of photogenerated carriers. The optimal sample CN-Ni 2 -II exhibited a photocatalytic hydrogen evolution rate of 920.12 μmol h −1 g −1 , which was 4.55 times that of pure CN-II and 2.76 times that of the one-step calcined sample CN-Ni 2 -I. Mechanism analysis confirmed that the synergistic effect of the strong interfacial interaction co-constructed by C–O–Ni bonds and N coordination, the optimized band structure, and the hierarchical mesoporous structure was the core driving force for the significant improvement of its photocatalytic performance. This work provides a new path for the simple preparation and performance regulation of high-efficiency non-noble metal single-atom photocatalysts, and also offers practical reference for the interfacial engineering design of single-atom catalytic systems.
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高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2026
·
IF 5.2
Xizhen Huang,Yongzheng Duan,Xili Shang,Yuejin Li,Dongmei Jia,Changhai Li
Fenton-like oxidation is a widely used advanced oxidation processes (AOPs) for the removal of persistent organic compounds. However, its development is significantly constrained by low H 2 O 2 utilization, the loss of transition metal ions, and the presence of harsh acidic conditions. Herein, a catalyst composed of MgO supported on porous P-doped graphitic C 3 N 4 (P-CN) was fabricated using a straightforward stepwise calcination process. The catalyst exhibited excellent performance in catalyzing the degradation of tetracycline (TC) through activated H 2 O 2 in the dark. The maximum reaction rate constant of the synthesized catalyst for TC degradation was 0.034 min −1 , which was nearly 62 times that of MgO and 18 times that of CN. The enhancement of catalytic properties was attributed to the doping of g-C 3 N 4 by P and the N-Mg bonds formed between g-C 3 N 4 and MgO, which not only enhanced charge transfer capabilities but also promoted the conversion of H 2 O 2 into 1 O 2 , •OH, and •O 2 − , thereby benefiting the degradation of pollutants. The effects of various parameters, including catalyst dosage, pH level, common interfering substances, and H 2 O 2 and TC concentrations, on degradation efficiency were examined in detail, and the ecological risk associated with the catalytic degradation of TC was predicted. In addition, the MgO/P-CN catalyst exhibited high stability, low H 2 O 2 consumption, and a broad pH range, had no transition metal components, and did not require an external energy input, demonstrating potential for the removal of organic pollutants and toxic waste.
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