ACS Applied Nano Materials
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2024
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IF 5.3
Velusamy Periyasamy,Shanhu Liu,M. Sathiya,Awais Ahmad,Elangovan Elamurugu,Asma A Alothman,Mohammad Sheikh Saleh Mushab,Fuchun Zhang,Xinghui Liu
Photoelectrochemical (PEC) systems are inefficient, probably due to charge carrier mobility, recombination rate, and solar light absorption. Fabricating semiconductor-metal sulfide nanocomposites and nanostructured materials can improve the absorption of solar radiation, electron–hole separation, transport, and hydrogen (H2) and oxygen generation to resolve the world’s energy dilemma. The vanadium-doped (V) layered graphitic carbon nitride (g-CN)/MoS2 (MS) nanocomposite was synthesized employing two-step solvent evaporation and thermal condensation. This multilayer V-doped g-CN/MS nanocomposite broke down methyl red dye in 60 min under sunlight. Due to visible light absorption, the V-doped g-CN-MS nanostructure degrades the dye by 97.84%. We found that at 3.0 wt % V-doped g-CN/MS coated on TiO2 nanorods. The catalyst nanocomposites displayed a high photocurrent density of 23.72 mA cm–2 and a H2 production rate of 4477 mol h–1 cm–2. Additionally, the microstructure, optical absorption behavior, and electrical conductivity were all shown to contribute to these impressive PEC characteristics. The V-modified g-CN/MS nanocomposite structures are effective and regulated PEC catalysts, and this study suggests ways to improve PEC water splitting and degradation.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2023
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IF 22.1
Linghui Peng,Haiyu Wang,Guiying Li,Weiping Zhang,Zhishu Liang,Taicheng An
Most commercial air purifiers rely on dense fibrous filters for bioaerosols control, which filter the particulate matter size-dependently without bactericidal activity. Herein, the non-size-dependent bifunctional nickel foam filters (g-C 3 N 4 /TiO 2 (CT)/Ni-polydopamine(PDA)/Ni bifunctional filter) with two layers of coupling nickel foams deposited by CT and PDA, respectively, were developed. The bifunctional filter shows remarkable non-size dependent bacteria removal efficiency (93.5 %) and inactivation efficiency (∼70 %) within 20 min at high airflow (12.5 L min −1 ). The inactivation efficiency can be further increased to 99.99 % with prolong irradiation time and enhancement of light intensity. The non-size dependent capture effect of the CT/Ni-PDA/Ni provided by adhesive force and charge was verified. In addition, the assumption that reactive oxygen species (ROSs) could be transferred into air during bacteria inactivation was first proved by chemiluminescent. This pioneered study may provide new insights into the development of bifunctional filters for non-size dependent capture and photocatalytic inactivation of bacteria in bioaerosols .
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RSC Advances
·
2025
·Vol. 15
·期 38
·31508-31521
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IF 4.6
Donghai Li,Yunrui Xu,Shilin Zhang,Linping Wang
To improve the utilization of solar energy and the efficiency of photocatalytic organic pollutant degradation, novel Z-scheme heterojunctions with high visible light catalytic performances have been widely developed. Herein, a novel Z-scheme BiFeO3/Ag/g-C3N4 heterojunction with a hierarchical 1D/0D/2D structure and visible light absorption was constructed by matching the suitable band structure between 1D BiFeO3 and 2D g-C3N4 and employing the localized surface plasmon resonance (LSPR) effect of 0D Ag nanoparticles. BiFeO3 nanofibers were synthesized via the electrospinning technique, providing short electron transport paths and visible light absorption range for g-C3N4. Plasmonic Ag nanoparticles were photodeposited on the surface of BiFeO3 to enhance the separation efficiency of the photogenerated electron–hole pairs between the bulk interfaces. UV-vis DRS, PL, photocurrent and EIS spectra confirmed the important roles of Ag and BiFeO3 in improving the photocatalytic activity of the Z-scheme heterojunction. The working principle of the BiFeO3/Ag/g-C3N4 Z-scheme heterojunction was proposed, indicating that ˙O2− and ˙OH are the main active species for the photocatalytic degradation of methylene blue (MB). The prepared BiFeO3/Ag/g-C3N4 heterojunction exhibited the highest photocatalytic activity, where its rate constant was 5.84 times higher than that of the pristine BiFeO3 and 3.26 times higher than that of the pristine g-C3N4. This study offers a new means for the design of novel high-performance photocatalysts, which can be a promising candidate in industrial applications.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2020
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IF 3.99
Haiping Liu,Jing Liang,Li shao,Jinge Du,Qiancheng Gao,Shuai Fu,Li Li,Miao Hu,Fengying Zhao,Jianguo Zhou
The dual defect mediated Z-scheme MoS 2 /g-C 3 N 4 photocatalyst was fabricated via a simple ultrasonic dispersion and annealing method. The structural, optical and electronic property was systematically characterized. X-ray photoelectron spectroscopy (XPS) analysis demonstrated that the MoS 2 was anchored on the g-C 3 N 4 through strong interface electrostatic interaction , which led to the formation of built-in electric field at the contact interface. The optimized MoS 2 /g-C 3 N 4 heterojunction achieved a superior photoefficiency towards bisphenol A (BPA) degradation and exhibited the reaction rate normalized to specific surface area of 3.22 × 10 −4 g·min −1 m −2 , approximately 10.0 and 6.7 times larger than these of g-C 3 N 4 and MoS 2 , respectively. The origin of the enhanced photocatalytic activity of MoS 2 /g-C 3 N 4 was attributed to the formation of intimate Z-scheme surface heterostructure between MoS 2 and g-C 3 N 4 , thus improved the light-harvesting ability, facilitated fast charge separation and created more active sites. The impact of anionic towards degradation efficiency was investigated. The degradation activity and degree of BPA were investigated by three-dimensional excitation-emission matrix (3D EEM) fluorescence technique. The Z-scheme charge transfer mechanism and the significant contribution of holes (h + ) and superoxide radicals ( O 2 − ) were demonstrated by electron spinning resonance (EPR), radical scavenger experiment and spectral quantification technology. This work could offer a new protocol for the design of highly efficient heterostructure photocatalysts towards environmental remediation.
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Desalination and Water Treatment
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2026
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IF 3.4
Wei Liu,Jin Wang,Yan Hao,Qinghong Zhang,Kecun Ma,Mei Liu,Zhi Chen,Qingguo Chen
Norfloxacin (NFX) is a widely used antibiotic that poses a persistent threat to aquatic ecosystems. The combination of photocatalysis and microalgae has emerged as a promising strategy for antibiotic removal. However, current research predominantly focuses on optimizing photocatalytic conditions and overall system efficiency, often neglecting the dynamic physiological state of microalgae when exposed to the photocatalytic degradation products of NFX (PDPN), which is the mixture of intermediates after 2 h ZGF photocatalysis of 8 mg/L NFX. This study constructed a synergistic degradation system employing a ZnO/g-C 3 N 4 /Fe 3 O 4 (ZGF) composite photocatalyst and Chlorella vulgaris for PDPN removal. Within this synergistic system, our primary focus was on the microalgal activity when cultured in a medium prepared from the PDPN. The results indicated the degradation rate of PDPN reached 82.1% in the synergistic degradation system. Transcriptomic analysis revealed that microalgae exhibited enhanced adaptability to these products, which were generated from ZGF photocatalytic pre-treatment of NFX. Key functional categories, including catalytic activity, oxidoreductase activity, and cytochrome P450 drug metabolism were significantly upregulated. This study indicates that the ZGF/microalgae system simultaneously achieves efficient pollutant degradation and maintains high metabolic potential as revealed by transcriptomic profiling, providing crucial insights for developing stable and sustainable bioremediation technologies.
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LANGMUIR
·
2026
·
IF 4.4
Xi Wang,Long Pan,Jilong Xu,Xu Dong,ZhengMing Sun,Dawei Sha,Jianning Ding
Aqueous zinc-ion batteries are promising for their inherent safety, low cost, and environmental friendliness. However, their performance is limited by dendrite growth, hydrogen evolution, and interfacial instability from uncontrolled Zn2+ deposition. Although graphitic carbon nitride (g-C3N4) has been explored as an artificial solid electrolyte interphase (ASEI), its limited active sites and sluggish Zn2+ transport restrict long-term stability. More importantly, the roles of different doping types in regulating interfacial Zn2+ behavior remain unclear. Herein, anion (O) and cation (K) are doped into g-C3N4 to construct model ASEI layers for elucidating their respective roles in interfacial regulation. Combined experimental characterizations and theoretical calculations reveal that cation doping (KCN) decreases Zn2+ diffusion barrier, thereby facilitating Zn2+ transport across the interphase. In contrast, anion doping (OCN) induces strong electrostatic interaction and enhances Zn2+ adsorption affinity, leading to improved zincophilicity and synergistically ion transport. These distinct interfacial interactions result in markedly different Zn deposition behaviors, where anion doping enables more uniform nucleation and suppressed dendrite growth. Consequently, the OCN@Zn anode exhibits enhanced cycling stability. This work clarifies the roles of anion and cation doping in regulating interfacial Zn2+ deposition from the perspectives of ion transport and interfacial nucleation, and provides mechanistic insights and design guidelines for constructing high-efficiency ASEI layers via heteroatom engineering.
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 2
·121659
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IF 7.5
Xinrui Lv,Huinan Sun,Zhijia Wu,Wei Gao,Mingshu Bi,Yufeng Wu
The study employed a synergistic surface-band engineering strategy to prepare a novel g-C 3 N 4 -based photocatalyst for the efficient and safe degradation of nitrobenzene (NB), a typical recalcitrant pollutant. Fe 0.010 /LCDs-TCN exhibited a higher density of active sites, a broader visible light absorption range, and a more effective separation and transfer of charge carriers. Importantly, Fe 0.010 /LCDs-TCN displayed a bandgap of 2.59 eV, with a valence band of + 2.04 eV and a conduction band of −0.55 eV. This narrowed bandgap, along with an optimized band potential, enabled the simultaneous generation of crucial active species ·OH and ·O₂⁻ from water and O₂. This mechanism skillfully balanced visible light absorption and redox capability. Regarding degradation performance, degradation rates reached up to 93 % for NB within 4 h, and 98 % for nitrophenols within only 60 min. Moreover, this system exhibited strong stability against pH variations and coexisting ions. The 5 cyclic experiments achieved high degradation efficiency of 74.3–94.7 %. The QSAR-based ECOSAR and Toxicity Estimation Software Tool (T.E.S.T.) confirmed a significant reduction in acute and chronic toxicity and mutagenicity of NB degradation system. This work offers a novel perspective on regulating g-C 3 N 4 by balancing light absorption and redox capability, providing a promising strategy for safe, efficient, and sustainable water purification technologies.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Huimin Zhang,Zhangjian Qian,Zhiling Qiu,Ziyang Chen,Yongtao Miao,Xin Xiao,Xiangmei Wang
With the advancement of industrialization, the contamination of aquatic environments by organic pollutants has become increasingly severe, highlighting the urgent need for efficient and stable visible light-driven photocatalysts. In this study, g-C 3 N 4 /Bi 2 WO 6 composite photocatalysts were synthesized via hydrothermal synthesis method. Experimental results show that the g-C 3 N 4 /Bi 2 WO 6 composite achieves degradation efficiencies of 95.7% for Rhodamine B and 86.5% for ciprofloxacin, with reaction rate constants enhanced by factors of 1.98 to 12.8 compared to the individual components. Furthermore, the catalyst retains high activity after three consecutive cycles, indicating excellent recyclability and structural stability. Combined theoretical calculations and experimental characterizations reveal that a built-in electric field at the heterojunction interface, in synergy with interfacial orbital hybridization, promotes a direct Z-scheme charge transfer mechanism. This mechanism not only reduces the band gap, extending visible-light absorption, but also enables efficient separation of photogenerated carriers while preserving strong redox capabilities. This work establishes a robust theoretical and experimental foundation for the rational design of high-performance visible-light-responsive photocatalytic materials.
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MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
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2026
·
IF 5.2
Yuqing Feng,Ziyan Tang,Jiaxian Tan,Hongxia Liu,Yingsen Fang,Shumei Gao,Ping Sun,Hui Wang,Hui Liu
Non-metallic photocatalysts represent a promising avenue for the green remediation of organic wastewater. In this study, O-doped g-C 3 N 4 (OCN) was synthesized using a one-step calcination strategy and synergistically coupled with periodate (PI) under visible light to develop a novel non-radical OCN/PI/Vis photo-Fenton-like system for the efficient degradation of Acid Orange 7 (AO7). Systematic characterization techniques, including transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRS) and photoluminescence (PL), along with density functional theory (DFT) calculations, were employed to elucidate the catalyst properties, oxidant adsorption, and reaction mechanisms. The OCN/PI/Vis system achieved a 93.9% removal of AO7 within 20 min and exhibited a reaction rate constant ( k = 1.48 × 10 −1 min −1 ) that was 4.4 times higher than that of the OCN/Vis system, significantly outperforming traditional oxidant-coupled systems (PMS/PDS/H 2 O 2 ). DFT calculations indicated that OCN exhibited an ultra-strong PI adsorption affinity ( E ads = −2.541 eV), leading to the elongation of the PI I-O bond and facilitating its activation. Quenching and electron paramagnetic resonance (EPR) experiments confirmed that singlet oxygen ( 1 O 2 ) is the dominant reactive species. Notably, the system demonstrated excellent anti-interference performance. This work establishes a high-efficiency, metal-free photo-Fenton-like system for dye wastewater treatment and provides a theoretical and experimental foundation for the rational design of g-C 3 N 4 -based PI activators, thereby opening new avenues for PI-based advanced oxidation processes (AOPs) in environmental remediation.
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INORGANIC CHEMISTRY COMMUNICATIONS
·
2026
·
IF 5.9
Yaxin Yi,Xian Liu,Zizhe Xiong,Bei Liu,Xiangyun Jiang,Lei Zhu,Xun Wang
Using a simple ‘polymer-assisted pyrolysis–co-precipitation’ strategy, a three-dimensional interlocked CeO 2 /g-C 3 N 4 Z -scheme heterojunction structure with a honeycomb-like morphology was successfully fabricated. In contrast to the morphology of conventional composites, morphological and structural characterisation in this study indicates that the thermal cracking strategy of the polymer template causes partial rupture of CeO 2 microspheres to create pores, driving g-C 3 N 4 to interpenetrate, thereby promoting the interweaving of the two to form a three-dimensional interlocked symbiotic network. Its unique structure not only increases the interfacial contact area but also creates smoother mesoporous transport channels, thereby promoting mass transfer processes. This significantly enhances the degradation kinetics in low-concentration systems. The degradation rate constant k for 5 mg/L phenol is 0.036 min −1 , which is up to 4.9 times higher than that in high-concentration systems. XPS and EIS analyses revealed strong interfacial chemical interactions between CeO 2 and g-C 3 N 4 ; this close interfacial coupling effectively reduced charge transfer resistance. Combined with characterisation methods such as ESR, this suggested that the system promotes the separation of photogenerated carriers along a proposed efficient Z -scheme path, thereby continuously generating large amounts of reactive oxygen species (•O—2 and •OH). The optimal 2–1Ce/CN composite achieved a phenol degradation rate of up to 94.5% for a 5 mg/L solution within 75 min, whilst demonstrating excellent cycling stability. This work provides novel mechanistic insights for the design and development of structurally optimised materials for highly efficient photocatalytic environmental remediation.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
·
IF 9.6
Ming Du,Dahui Yu,Jian Zhang,Zhangyang Zhou,Dahua Ren,Liushun Wang,Shibing Zou,Jiayong Xiao,Xing'ao Li,Jinqiao Yi
A unique V 2-x CT y QDs@GCN photocatalyst for H 2 evolution. • The lattice-distorted and V V decorated V 2-x CT y MXene QDs provides abundant active sites. • The interfacial electric field of photocatalyst promotes fast charge transfer. • The H 2 evolution rate of the best V 2-x CT y QDs@GCN photocatalyst is 0.4 mmol h −1 . • The V 2-x CT y QDs@GCN photocatalyst shows a high AQY of 21.67% at 383 nm. The synergistic coupling between vacancy defects and lattice distortions in photocatalysts substantially accelerates the separation and transport kinetics of photogenerated carriers. Herein, we report a highly efficient photocatalyst toward the hydrogen evolution reaction (HER), which is fabricated by confining V 2-x CT y MXene quantum dots (QDs) with abundant vanadium vacancies (V V ) and prominent lattice distortions within porous g-C 3 N 4 nanotubes (GCN NTs). The optimized photocatalyst affords a visible-light-driven H 2 evolution rate of 0.40 mmol∙h −1 along with a corresponding apparent quantum yield (AQY) of 21.67%, which is four-fold higher than that of pristine porous GCN NTs. Such superior photocatalytic performance originates from the intimate interfacial coupling between the lattice-distorted and V V -rich V 2-x CT y MXene QDs and porous GCN NTs. This unique heterostructure constructs a robust internal electric field (IEF), which efficiently promotes spatial charge separation and extends the photogenerated carrier lifetime. Density functional theory (DFT) calculations further verify that the synergistic effect between V V defects and lattice distortions in confined V 2-x CT y MXene QDs not only optimizes the adsorption behavior of key reaction intermediates but also maximizes the exposure of unsaturated active sites, thereby significantly reducing the kinetic barrier of the HER. Collectively, this work systematically clarifies the synergistic mechanism of vacancy defects and lattice distortions in MXene QDs, providing a feasible strategy for the rational design and fabrication of high-efficiency photocatalysts. The lattice-distorted and V V decorated V 2-x CT y QDs anchored on porous g-C 3 N 4 NTs enable effective charge separation, provide abundant active sites, reduce the adsorption energy barrier and construct stable bonding interface, thus achieving high-efficiency photocatalytic H 2 evolution. Download: Download high-res image (166KB) Download: Download full-size image
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MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Peng Du,Wei Gao,Zhaohui Huang,Chuqi Jiang,Jiahui Zhang,Dongjun Lv,Luyang Liang,Ling Yin,Xiaolei Zhang,Hongbo Zhang,Huiting Wu
Three-level ET cascade relieves bottleneck. • TMB: 5.8x act., 24.2x eff.. • GSH sensing + redox disruption (depletion/ROS). Nanozyme efficiency is fundamentally constrained by interfacial electron transfer (ET) bottlenecks, yet most strategies overlook the rational design of ET pathways. Herein, a ternary NiMo 6 @MIL-100(Fe)/g-C 3 N 4 nanozyme featuring a hierarchical three-level ET cascade was reported: TMB substrates are preconcentrated onto g-C 3 N 4 via π–π stacking (Level I); electrons transfer from g-C 3 N 4 to Fe 3+ nodes of MIL-100(Fe) through interfacial Fe O C bonds (Level II); and finally cascade into the encapsulated NiMo 6 cluster for H 2 O 2 activation and •OH generation (Level III). This design yields higher activity than binary (1.8-fold) and pristine counterparts (5.8-fold), with a 24.2-fold enhancement in catalytic efficiency for TMB. By leveraging glutathione (GSH) as a specific electron cascade interceptor, a colorimetric assay achieves a detection limit of 0.36 μM with excellent selectivity over structurally similar thiols. Beyond sensing, the same cascade efficiently depletes GSH and induces intracellular ROS bursts in HepG2 cells, disrupting tumor redox homeostasis and highlighting its therapeutic potential and establishing a mechanism-driven paradigm for biosensing and cancer therapy. A hierarchical three-level ET cascade transforms electron bottlenecks into a superhighway for GSH sensing and tumor redox therapy. Download: Download high-res image (274KB) Download: Download full-size image
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危险品化学品经营许可证（带存储）