Journal of Environmental Chemical Engineering
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2026
·Vol. 14
·期 1
·121040
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IF 7.2
Zhichao Kang,Yang Yang,Xuerong Han,Chenxu Wang,Jing Yue,Hongwen Yu
Atrazine is a widely used herbicide in global agricultural practices. However, its environmental persistence poses substantial toxicological risks to ecosystems, underscoring the need for effective remediation strategies. In this study, it is demonstrated that a hybrid system integrating the atrazine-degrading bacterium Paenarthrobacter sp. KN0901 with phosphorus-doped C3N5 significantly enhances atrazine removal efficiency under low-temperature conditions. Specifically, this hybrid system achieved a 28.0 % higher atrazine degradation rate compared with the bacterium alone, primarily by stimulating bacterial growth and upregulating metabolic activity. Further mechanistic investigations revealed that C3N5 materials increased intracellular reactive oxygen species (ROS) levels in KN0901, mainly through enhanced hydroxyl radical generation. Moreover, the hybrid system maintained stable performance across a broad range of pH and temperature conditions. Collectively, these findings provide new mechanistic insights into the role of ROS as a biochemical stimulant in biohybrid systems and offer a promising strategy for designing efficient and resilient bioremediation technologies based on material–microbe synergy.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2026
·
IF 9.2
Mengyao Tian,Jinming Ma,Hangyu Xiang,Shen Xu,Jiahao Qi,Yaru Zhang,Tifeng Jiao
Morphological engineering and composite fabrication of graphitic carbon nitride (g-C 3 N 5 ) are effective strategies to suppress photogenerated charge carrier recombination, improve electronic conductivity, and optimize photocatalytic performance. This research significantly enhanced the photocatalytic hydrogen evolution performance of g-C 3 N 5 through morphology regulation and carbon quantum dot (CQDs) compositing strategies. Using 3-amino-1,2,4-triazole as the precursor, thin-layered g-C 3 N 5 is prepared via thermal polymerization and KOH exfoliation, and CQDs are in-situ composited via a hydrothermal method. The optimized g–C 3 N 5 –1.0% composite is a S-Scheme heterojunction, featuring a narrow band gap (2.12 eV), a more negative conduction band position, and excellent charge separation efficiency. Under visible light, it achieves a hydrogen evolution rate of 2.9 mmol/g/h, which is 9.7 times that of pure g-C 3 N 5 , along with good cycling stability. This study provides a feasible strategy for developing high-efficiency non-metallic photocatalysts.
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Surfaces and Interfaces
·
2025
·
IF 6.3
Bo Wang,Wenxu Zhang,Wei Li,Huiyang Xu,Yongyi Li,Shuanglong Li,Xiaorui Huang,Shichao Jiao,Di Lin,Huixiang Yan
The production of hydrogen through photocatalytic technology has become a very attractive way to alleviate the problem of environmental pollution. In this work, A ZnIn 2 S 4 Co 3 O 4 -(SiC@g-C 3 N 5 ) triple heterojunctions structure was constructed. In this structure, a P-N heterojunction is formed by Co 3 O 4 with ZIS, a Z-type heterojunction is constructed by ZIS with CN5, and a II-type heterojunction is formed by CN5 with SiC. The three are synergistically used to optimize the carrier migration path. Under this synergistic mechanism, Co 3 O 4 increases the concentration of photogenerated electrons in the ZIS conduction band. It allows the photogenerated electrons to participate in the H⁺ reduction hydrogen generation reaction. Meanwhile, SiC facilitates further electron enrichment in the CN5 conduction band via the type - II heterojunction.SiC also boosts carrier migration efficiency through the Z - type pathway. In the ZnIn 2 S 4 - Co 3 O 4 -(SiC@g - C 3 N 5 ) system, the consumption rate of useless photogenerated electron - hole pairs per unit time is much higher than that in the ZIS - CN5 system with only one Z - type heterojunction. The number of photogenerated electrons on ZIS in the ZnIn 2 S 4 - Co 3 O 4 -(SiC@g - C 3 N 5 ) system is much higher than that in the ZIS - CN5 system. This greatly reduces the probability of the system's photogenerated carrier complexation. It also increases the charge separation efficiency. As a result, the photocatalytic efficiency is significantly improved. 20ZIS-Co-(SiC@CN5) composites exhibited efficient hydrogen production (13655μmol·g -1 -h -1 ) in hydrogen production experiments. The ZIS - Co - (SiC@CN5) composites enable efficient separation and directional migration of photogenerated carriers via the collaborative action of the multilevel heterojunction. This action offers a scalable concept for designing highly efficient and stable photocatalysts for hydrogen production.
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Surfaces and Interfaces
·
2026
·
IF 6
Xinnan Kang,Xiaoyou Cui,Zhiyu Zhang,Chuhan Zhang,Bin Liu
The inefficient separation of photogenerated charge carriers significantly limits the photocatalytic efficiency of nitrogen-enriched graphitic carbon nitride (g-C 3 N 5 ). To address this issue, a CoWO 4 /C 3 N 5 type-II heterojunction was fabricated via a water-bath-assisted process followed by calcination, providing an alternative to conventional hydrothermal approaches. The optimal composite (2% CoWO 4 /C 3 N 5 ) demonstrated exceptional photocatalytic activity and broad-spectrum applicability, achieving degradation rates of 71.24% for MO, 82.26% for MB, and 80.09% for RhB within 20 min. It also maintained high efficiency in treating complex mixed-dye systems, underscoring its practical potential. Phytotoxicity tests using mung bean seeds and natural lotus leaves further indicated that the treated dye solution exhibited no obvious toxicity and even promoted root elongation. The improved performance can be attributed to the broadened visible-light response and the efficient charge separation/transfer enabled by the type-II heterojunction, which also contributes to the structural stability of the photocatalyst. Download: Download high-res image (272KB) Download: Download full-size image
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APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Zijian Chen,Huiling Guo,Yao Chen,Xinyue Yang,Cheng Liu,Huajun Sun
Semiconductor photocatalysis faces critical challenges, including limited visible-light absorption and rapid charge recombination. Overcoming these bottlenecks is essential for its environmental and energy applications. In this work, a MoS 2 /HCN S–scheme heterojunction was constructed by integrating protonated C 3 N 5 with MoS 2 nanosheets. This architecture was specifically engineered to establish a synergistic piezo-photocatalytic effect by leveraging the intrinsic asymmetry of the N-rich C 3 N 5 framework. Under simultaneous solar and ultrasonic irradiation, the MoS 2 /HCN heterojunction achieved a remarkable 99% degradation of tetracycline hydrochloride within only 15 min. The degradation rate constant reached 0.249 min −1 , representing a 22.6-fold enhancement compared to the 0.011 min⁻ 1 observed for pristine C 3 N 5 . Furthermore, the composite delivered a superior hydrogen evolution rate of 14.83 mmol g -1 h −1 . Mechanistic analysis, supported by in-situ characterizations, confirms that the internal piezoelectric field effectively drives directional carrier separation and significantly boosts surface redox kinetics. This study demonstrates a promising strategy for harnessing multiple environmental energy sources through advanced interface engineering, providing a practical blueprint for integrated pollution remediation and green energy conversion.
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DIAMOND AND RELATED MATERIALS
·
2026
·
IF 5.2
Huihu Wang,Shenghao Jiang,Liu Ouyang,Yu Xiong,Qianyu Wang,Yun Zhao,Xing Xiang,Chenhuinan Wei
g-C 3 N 5 /BiVO 4 - x heterojunctions with tunable BiVO 4 facet ratios were fabricated. • g-C 3 N 5 /BiVO 4 -F shows best activity via suitable (121)/(040) and (040)/(011) ratios. • H 2 O 2 addition boosts photocatalytic degradation efficiency of ceftriaxone sodium. • In-situ XPS confirms the S-scheme charge transfer in g-C 3 N 5 /BiVO 4 -F heterojunction. S-scheme heterojunctions have garnered significant attention in the photocatalytic degradation of antibiotics due to the efficient charge separation and strong redox capability preservation. However, photocatalytic activity is highly dependent on the exposed crystal facet ratios of the catalyst. A series of g-C 3 N 5 /BiVO 4 (N-CN/BiVO 4 -x) S-scheme heterojunctions were fabricated by tuning the morphology of BiVO 4 into peanut-like (BiVO 4 -P), flake-like (BiVO 4 -F), and decahedral structures (BiVO 4 -B), thereby controlling the ratios of exposed crystal facets. Degradation performance tests revealed the optimal performance of N-CN/BiVO 4 -F. This heterojunction achieved a degradation rate of 71.1% for ceftriaxone sodium (CS). With the introduction of H 2 O 2 , the degradation rate further increased to 85.1%. The results confirmed that the superior performance of N-CN/BiVO 4 -F is closely related to the specific exposure ratios of its (121)/(040) and (040)/(011) crystal facets. Furthermore, in-situ XPS confirmed that the charge transfer follows S-scheme charge transfer mechanism. Photoelectrochemical measurements and radical trapping experiments revealed a possible CS degradation mechanism. This work elucidates how the exposed facets of BiVO 4 regulate the photocatalytic performance of S-scheme heterojunctions. The findings provide a theoretical and practical basis for designing efficient photocatalysis systems. Download: Download high-res image (92KB) Download: Download full-size image
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NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 47
·期 23
·10973-10983
·
IF 3.3
Bicheng Hu,Yuhui Zhang,Jincheng Zhang,Jiazan Liu,Meng Lei,Chenxi Zhao,Qiujun Lu,Haiyan Wang,Fuyou Du,Shiying Zhang
In this work, a novel flower-shaped NV-g-C3N5@VS2 heterojunction was prepared by hydrothermal in situ synthesis using NV-g-C3N5 as the matrix and thioacetamide as the precursor. The prepared heterojunction showed a flower-like and layered structure, which widened the visible light absorption range and facilitated the usage of visible light. Under visible light irradiation, the NV-g-C3N5@VS2 heterojunction exhibited excellent photoelectrocatalytic nitrogen reduction activity with an ammonia yield of 49.26 μg h−1 mg−1 in an electrolyte solution saturated with N2. Moreover, the NV-g-C3N5@VS2 heterojunction achieved outstanding photocatalytic degradation activity. The photocatalytic degradation rate of Rhodamine (RhB) reached 95% in 35 min under visible light irradiation. More importantly, the catalyst displayed good reusability and stability after four cycling runs for the photodegradation of MB. The prepared catalyst showed excellent photocatalytic universality and was also applied to efficiently degrade organic pollutants such as methyl orange (MO) and methylene blue (MB). Therefore, solar light-driven photocatalytic and photoelectrocatalytic applications based on the NV-g-C3N5@VS2 heterojunction are expected to pave a new way for fertilizers, energy utilization, and environmental remediation.
研究领域:
材料科学
·
环境科学
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ChemPhotoChem
·
2025
·
IF 3
Yuan Bai,Jie Liu,Weiting Huang,Xintong Shen,Haoyu Zheng,Kexin Hu
Graphical Under visible light, a Z-type heterojunction is formed between Ti 3 C 2 /TiO 2 and g-C 3 N 5 to enhance charge separation. Electrons and holes directly or indirectly react with PMS to generate free radicals such as · ,·OH, and 1 O 2 to degrade tetracycline. Photocatalysis-assisted peroxymonosulfate (PMS) activation is a promising technology for the degradation of antibiotics in water remediation. Herein, MXene-derived oxide (TiO 2 ) and g-C 3 N 5 Z-scheme ternary heterojunction photocatalytic composite materials are synthesized using an electrostatic self-assembly approach and characterized. The optimized g-C 3 N 5 /TiO 2 /Ti 3 C 2 (CNTT) heterostructure demonstrates exceptional photocatalytic activity for tetracycline (TC) removal, achieving 90% degradation within 60 min at an optimal g-C 3 N 5 :TiO 2 /Ti 3 C 2 mass ratio of 3:2. Remarkably, the system exhibits broad pH adaptability (80.8–96.3% TC removal across pH 2–12), overcoming the pH sensitivity limitations of traditional PMS-based processes. Mechanistic investigations reveal a synergistic photocatalysis-PMS activation pathway, with quenching experiments confirming , ·OH, · , and 1 O 2 , as dominant reactive species. The CNTT composite maintains 65.2% degradation efficiency after five cycles, demonstrating robust stability. Coexisting ions negatively influence TC removal in the order: H 2 PO 4 − > > Cl − > > . This work establishes the CNTT heterostructure as a promising, environmentally tolerant candidate for efficient pharmaceutical pollutant remediation in complex aqueous matrices.
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FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES
·
2024
·
IF 2.1
Yufei Zhang,Sile Liu,Chuan Tian,Peng Xu,Xinzhong Deng,Congna Lv
To solve the pollution of natural water bodies by organic dyes and the exceeding of indoor HCHO standards caused by renovation, the study realized the band gap modulation of g-C3N5, a novel semiconductor photocatalytic material, by using H3BO3 as a source of nonmetallic B. The prepared B/g-C3N5 has shown excellent photocatalytic performance and stability for organic dye degradation in water bodies and indoor HCHO removal. The degradation rate of methylene blue (MB) reached 95% in 60 min of visible light, and the removal rate of HCHO reached 96.3% in 180 min of visible light. The MB and HCHO were efficiently degraded to small molecule inorganic compounds such as CO2 and H2O under the oxidation of active groups such as ·O2− and h+. The doping of nonmetallic B realizes the efficient separation of e−-h+ of g-C3N5, improve the absorption performance of visible light, and broaden the spectral range significantly. The modulation of the g-C3N5 band gap provides a potential application scenario for the development of novel photocatalytic materials.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Wenqiang Deng,Linfeng Xiao,Yingxin Zhang,Boyu Liang,Yan Hong,Runrun Li,Zhengyuan Zhou,Runhua Liao,Guangzhi Hu
In this study, Lanthanum ions (La 3 + )-doped BiOBr/g-C 3 N 5 (La 3+ @BiOBr/g-C 3 N 5 ) Z-scheme heterojunction photocatalyst was successfully synthesized via a facile solvothermal method. The composite structure was thoroughly characterized by XRD, FTIR, XPS, SEM, TEM, UV-Vis DRS, PL, and EIS analyses, confirming the successful incorporation of La 3+ into the BiOBr lattice and the effective integration of g-C 3 N 5 . The optimal composite with 5 wt% g-C 3 N 5 demonstrated superior photocatalytic performance in degrading tetracycline hydrochloride (TCH), achieving a removal efficiency of 95.9% within 180 min under visible light irradiation. The enhanced activity is attributed to the synergistic effects of increased specific surface area, improved visible light absorption, and more efficient photogenerated charge separation, as facilitated by La 3+ doping and Z-scheme charge transfer pathways. Scavenger experiments and Mott-Schottky analysis indicated that superoxide radicals (•O 2 - ) and photogenerated holes (h + ) are the main reactive species responsible for pollutant degradation. Furthermore, the composite exhibited excellent stability and reusability, maintaining over 87% degradation efficiency after five consecutive cycles with minimal structural change. This work provides a promising strategy for the design of high-efficiency rare-earth-modified photocatalysts for antibiotic pollutant removal in wastewater treatment applications.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Boding Zhang,Zhonghu Dong,Yanyu Wang,Xiaobo Feng,Jiameng Liu,Yunhun Yan,Dong Liu,Tianjun Ni,Baozhong Liu
The efficacy of peroxymonosulfate (PMS) activation is critically dependent on interfacial charge dynamics in photocatalytic systems. While covalent organic frameworks (COFs) show promise, their performance is often limited by suboptimal charge separation. Herein, we construct a metal-free S-scheme heterojunction by integrating TphDha COF with C 3 N 5 to achieve precise interfacial charge modulation. This unique architecture, stabilized by intramolecular hydrogen bonds, establishes a built-in electric field that drives the directed migration and spatial separation of photogenerated carriers, thereby preserving their high redox potential. The optimized heterostructure exhibits significantly enhanced visible-light absorption and charge separation efficiency, which synergistically boosts the activation of PMS. Under visible light irradiation, the system achieves a superior tetracycline degradation efficiency of 96.9% and maintains over 90% efficiency after multiple cycles, demonstrating remarkable catalytic stability and reusability. The interfacial charge transfer mechanism was elucidated through in-situ characterization and theoretical calculations. Furthermore, the degradation pathways, toxicity evolution of intermediates, and the system's efficacy in continuous-flow operation, real water matrices, and complete bacterial inactivation were comprehensively investigated, underscoring its practical potential for environmental remediation. This work provides profound insights into interface engineering for designing efficient metal-free catalytic systems.
研究领域:
环境科学
·
材料化学
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光催化
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化学工程
·
水处理
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PubMed
高影响因子
ChemSusChem
·
2026
·Vol. 19
·期 7
·e202502708
·
IF 5.9
Jiajin Jiang,Xin Wen,Guangguo Niu,Ce Sun,Haiyan Tan,Yanhua Zhang
With increasing attention to fossil fuel consumption and environmental pollution, the development of clean and sustainable biofuels has become increasingly urgent. Hydrothermal liquefaction (HTL) is a promising technology for converting biomass into bio-oil, but traditional HTL processes face challenges such as low conversion efficiency and high energy consumption. To address these issues, this study synthesized a series of B/CN heterogeneous photocatalysts with different BiOCl (BOC) and g-C 3 N 5 molar ratios by solvothermal method and applied them to the photothermal synergistic catalytic liquefaction of cellulose in methanol. Methanol can be recycled and reused. It has been proven that BOC formed a heterojunction with g-C 3 N 5 , extending the photo responsive range of the photocatalyst to the visible light region, promoting the separation and transfer of photogenerated carriers, and optimizing the dispersion of active components. The effect of photocatalyst on the chemical composition and thermal stability of bio-oil was studied. The B/CN-1:2 photocatalyst achieved optimal performance, with a maximum yield of 61.23 • wt% for bio-oil, an higher heating value of 21.39 MJ/kg, and an energy conversion efficiency of 77.41%. Bio-oil is mainly composed of high-value compounds such as alcohols, esters, and ethers, with reduced heavy components and improved thermal stability. Mechanistic studies have shown that the photothermal synergistic effect of B/CN catalysts promotes the cleavage of cellulose glycosidic bonds by generating reactive free radicals through the photodegradation of methanol. This work provides a feasible strategy for improving the efficiency and quality of biomass HTL by designing high-performance photothermal catalysts and offers new insights for the sustainable production of biofuels. Graphical A BiOCl-g-C 3 N 5 heterojunction photocatalyst has been developed and used for the study of photothermal catalysis of cellulose liquefaction to prepare bio-oil. At the optimal ratio, the yield of bio-oil reached 61.23%, with higher heating value of 21.39 MJ/kg, while the thermal stability and component release were well optimized.
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