JOURNAL OF MEMBRANE SCIENCE
·
2020
·
IF 7.183
Yuchuan Liu,Zongxue Yu,Xiuhui Li,Liangyan Shao,Haojie Zeng
In this work, the layered double hydroxide @ graphitic nitrogen carbide (LDH@g-C 3 N 4 @PDA) composite photocatalysts were fabricated by dopamine modification method. Then, the LDH@g-C 3 N 4 @PDA and graphene oxide (GO) composites were assembled on PVDF membrane to construct the photocatalytic self-cleaning composite membrane . The prepared PVDF/LDH@g-C 3 N 4 @PDA/GO composite membrane has excellent performance in contaminant separation and photocatalytic degradation. The rejection rates of methylene blue (MB), rhodamine b (RhB), gasoline, diesel, and petroleum ether were 100%, 94.61%, 96.74%, 93.22%, and 92.35%,respectively. More importantly, under visible-light irradiation, the membrane could achieve continuous and simultaneous flow-through separation and degradation of dye in short time. The rejection rate and the flux of organic dye were 99.28% and 397.14 L•m −2 h −1 bar −1 . The photocatalytic cycle experiment, which has been repeated 10 times, have also revealed the stability and high efficiency of PVDF/LDH@g-C 3 N 4 @PDA/GO membrane on account of its superior photocatalytic self-cleaning function. Therefore, this self-cleaning composite membrane would have a range of applications in wastewater treatment .
✓ 已验证
DOI
高影响因子
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
·
2022
·
IF 7.129
Chun Yang,Xiao Liu,Jun Liu,Guangli Li,Lixia Xie,Xiaohui Shi,Yukun Zhao,Lan Long,Dongge Ma,Jianxin Tang,Wanhong Ma
Conventional photocatalysts generate numerous active species—primarily hydroxyl radicals (•OH)—under solar light excitation to exert photocatalytic activity for especially antibacterial effects. However, the light dependence limits their competitiveness against other antimicrobial materials since they do not work at night. Herein, a P-g-C 3 N 4 /Sr 2 MgSi 2 O 7 :Eu 2+ ,Dy 3+ (P-g-C 3 N 4 /SMSO) composite day–night photocatalyst is synthesized, using a model methyl orange (MO) substrate, and the impacts of trace P doping and the SMSO composite on the activity of the photocatalyst in MO degradation is investigated; Its antibacterial effect against Escherichia coli and Staphylococcus aureus on ceramic surfaces is further examined. The morphology, structure, and composition of the photocatalyst are characterized by SEM, TEM, XRD, FT-IR, and UV–vis DRS. Finally, the photocatalytic mechanism is elucidated through active species capture experiments and ESR testing. P doping and the SMSO heterojunction structure reduce the width of the forbidden band of g-C 3 N 4 and broaden its visible-light-response range. Moreover, SMSO acts as a light source to realize long-lasting photocatalytic performance of the composite, even in the dark. The photocatalytic process produces •O 2 - , 1 O 2 , and h + active species, with •O 2 - and 1 O 2 playing the dominant role—instead of •OH as previously thought.
✓ 已验证
DOI
PubMed
高影响因子
FUEL
·
2022
·
IF 8.035
Qi Zhang,Zhen Zhang,Wanli Xia,Yaming Zhou,Hongmin Yang
Lauric acid (LA) shows much potential as one organic phase change material (PCM) for thermal energy storage, owing to its suitable melting point, relatively high thermal/chemical stability and latent heat. However, the LA-based thermal storage method invariably suffers from the big challenges of liquid leakage tendency and low thermal conductivity of single lauric acid, limiting immensely its practicality. Herein, one encapsulation and modifying strategy to fabricate high conductive and low liquid leakage composite phase change materials (CPCMs) for photo-thermal storage was proposed by constructing novel graphene doped LA/g-C 3 N 4 CPCM. Firstly, LA is infiltrated into a novel two-dimensional porous matrix – the graphitic phase carbon nitride (g-C 3 N 4 ) to prevent liquid leakage in the solid–liquid phase change process. Then it is further incorporated with a certain amount of graphite nanoplatelets to further enhance thermal conductivity. The encapsulation and modifying strategy enable the graphene doped LA/g-C 3 N 4 to show excellent thermal storage performance for both heat and light energy, low liquid leakage, and high thermal stability. The hybrid LA/g-C 3 N 4 with 5 wt% graphene (CPCM3) modification has a melting temperature of 45.88 °C and enthalpy of 159.19 J/g. The corresponding solidification temperature and enthalpy are 43.36 °C and 144.40 J/g, respectively. Its thermal conductivity at 50 °C is enhanced to 0.9338 W/(m·K) (one time higher than single LA), also superior to the state-of-the-art LA-based CPCMs. After 100 thermal cycles, the composite phase change material only suffers low mass loss and latent heat loss of phase change, which proves the good thermal reliability. Furthermore, TGA and DTG data indicate that CPCM3 can maintain good thermal stability in the normal operating temperature range. In the whole, the joint effect of the porous g-C 3 N 4 matrix and graphene modification improve the thermal storage performance of LA through the improvement of liquid immobilization and thermal conductivity. This work provides a promising strategy for fabricating high conductive and low liquid-leakage CPCM toward enhanced photo-thermal storage.
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Ze Li,Youbin Zheng,Yuze Wang,Zhenjie Hao,Yuhui Huang,Rui Zhu,Dinghao Zheng,Ruixia Zhong,Liang Dong,Jianbing Zang,Pengfei Li,Zheng-Jun Wang
To address the kinetic limitations of CO2 desorption in the urea oxidation reaction (UOR), we develop a urotropine-induced strategy to engineer NiS–Ni3S2@g-C3N4 electrocatalysts. Urotropine, serving as both a structure-directing agent and g-C3N4 precursor, forms a dandelion-like architecture with narrowed columnar fluffs to maximize the surface area. The electronegativity difference between g-C3N4 and NiS–Ni3S2 induces local electron interactions, converting inactive sites to electron-enriched active sites and reducing adsorption energy barriers for CO2 desorption, the rate-limiting step. This catalyst exhibits outstanding UOR performance with a 1.24 V onset potential, 1.34 V to reach 100 mA cm−2, and 90% activity retention over 40 hours, while also demonstrating superior trifunctional activity rivaling IrO2 (OER: η10 = 90.9 mV) and Pt/C (HER: η10 = 13 mV). The urea electrolyzer requires only 1.26 V for 10 mA cm−2 with 48-hour stability. This work provides a breakthrough in designing efficient electrocatalysts through synergistic structural and electronic regulation.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Changqing Liu,Yufei Chen,Tao Wang,Ying Wang,Conghui Liu,Xingang Kong,Jianfeng Huang,Ling Guo,Lixiong Yin
To tackle the pressing dual challenges of the energy crisis and environmental pollution , it is urgent to develop low-cost, high-activity photocatalysts for solar-driven hydrogen production. In this work, a Zn x Cd 1-x S/protonated g-C 3 N 4 S-scheme heterojunction photocatalyst is successfully constructed using an electrostatic interaction-driven assembly strategy. The optimized composite photocatalyst exhibits a hydrogen evolution rate of 17.64 mmol g −1 h −1 , which is approximately 4.14 times and 28.45 times higher than that of pure Zn x Cd 1-x S and protonated g-C 3 N 4 . The apparent quantum efficiency (AQE) of ZCSCN-20 reaches 12.3 % at 420 nm. The electrostatic interaction drives the assembly of the heterojunction, leading to an intimate interfacial contact. This close connection, in turn, significantly shortens the migration distance and transfer time of photogenerated charges. The established S-scheme charge transfer pathway enables the efficient separation of photogenerated charge carriers while preserving the strong redox capability inherent in the constituent semiconductors. Furthermore, the use of sacrificial agents to deplete photogenerated holes further suppresses charge carrier recombination, synergistically enhancing the overall catalytic activity. This work provides an efficient strategy for preparing and optimizing sulfide-based S-scheme heterojunction photocatalysts, laying a foundation for developing stable, high-performance solar-driven hydrogen production systems.
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Xinfei Zhang,Xiaobo Jia,Jianhui Zhan,Bin Han,Nan Zhang,Honghao Xie,Feilong Li,Yuan Zhang
The activation of peroxydisulfate (PDS) by g-C 3 N 4 -based catalysts has captured considerable interest; however, the oxidation prowess falls short of expectations, and the inherent processes remain enigmatic. Herein, a novel C C engineered g-C 3 N 4 (CCN) was successfully developed via a one-step thermal polymerization method for the activation of PDS. Our findings revealed that the CCN/PDS system selectively degraded various organic contaminants, operated effectively across a wide pH range (3−9), and maintained high performance in the presence of common water impurities. Experiments and theoretical calculations indicated that the electron transfer process (ETP) was the primary mechanism for phenol degradation. The introduction of C C led to charge redistribution and improved conductivity in g-C 3 N 4 . This enhancement strengthened PDS adsorption at electron-deficient carbon sites and bolstered electron transfer between PDS and organic contaminants. Moreover, a nonradical pathway predicated on ETP emerged when phenol, PDS, and CCN were present, propelled by differences in molecular orbital energies. This study not only deepens our understanding of PDS activation through the ETP but also introduces a novel strategy for the removal of organic contaminants from water.
✓ 已验证
DOI
高影响因子
Materials Science and Engineering B-Advanced Functional Solid-State Materials
·
2022
·
IF 3.407
Lianqing Yu,Xingyu Zhao,Jiandong He,Lijie Duan,Yankun Wang,Yaping Zhang,Haifeng Zhu
It is extremely desirable to develop efficient and cheap water splitting photocatalysts. An ultrahigh performance and stable photocatalyst g-C 3 N 4 /Zn 0.5 Cd 0.5 S was prepared by simple sintering method. g-C 3 N 4 nanosheets are evenly distributed around 20–30 nm ZnCdS nanoparticles, which can accelerate carriers separation and transfer, and increase the carriers life-time from 4.1 ns to 5.5 ns. UV–vis absorption spectra demonstrate that their absorption range can reach to visible light edge of 539 nm. The photocatalyst has a high photocatalytic hydrogen evolution rate of 16.66 mmol•h −1 •g −1 under visible light illumination (λ = 400–780 nm). Furthermore, after six recycles of photocatalyst, the hydrogen evolution stability still remains 94%. The excellent photocatalytic performance is attributed to the Z-scheme energy band structure formed between g-C 3 N 4 and Zn 0.5 Cd 0.5 S by simple sintering method. This work provides significant progress toward the synthesis of cheap Z-scheme photocatalysts for practical applications.
✓ 已验证
DOI
高影响因子
Catalysis Science & Technology
·
2021
·Vol. 11
·期 22
·7316-7325
·
IF 6.119
Chao Zhang,Hailian Bao,Xiaodi Chen,Xingliang Liu,Shiai Xu
Three typical arylamine organic dyes were covalently grafted onto g-C3N4 to form the resulting composites g-C3N4/TPA-CNCHO, g-C3N4/EtPTZ-CNCHO and g-C3N4/EtCz-CNCHO. They were synthesized by 1,3-dipolar cycloaddition with (E)-3-(4-(diphenylamino)phenyl)-2-formylacrylonitrile (TPA-CNCHO), (E)-3-(10-ethyl-10H-phenothiazine-3-yl)-2-formylacrylonitrile (EtPTZ-CNCHO), or (E)-3-(9-ethyl-9H-carbazol-3-yl)-2-formylacrylonitrile (EtCz-CNCHO) dyes. The experimental results show that arylamine organic dye moieties were successfully attached to g-C3N4, and this attachment can efficiently extend the light absorption area of pure g-C3N4 from approximately 460 nm to more than 650 nm. The obtained g-C3N4/TPA-CNCHO, g-C3N4/EtPTZ-CNCHO and g-C3N4/EtCz-CNCHO samples showed enhanced H2 evolution activity with photocatalytic H2 production rates that were approximately 105-, 93- and 67-fold that of pure g-C3N4. By combining the comprehensive analysis from experiments and density functional theory (DFT) calculations, a possible mechanism can be drawn: the introduced arylamine organic dye fragments attached to the surface of the g-C3N4 may acquire more light irradiation, and effective photoexcited carrier transfer from the donor dye fragments to the acceptor g-C3N4 could be achieved through the IFCT process. The results confirm that the covalent azomethine ylide bonds formed via 1,3-dipolar cycloaddition between the g-C3N4 and organic dye can truly enhance the photocatalytic H2 evolution rate of the obtained samples. It is believed that this kind of modification can be an effective strategy for achieving other kinds of functional organic dyes grafted onto g-C3N4 with highly efficient photocatalytic H2 activity.
✓ 已验证
DOI
高影响因子
Nanomaterials
·
2018
·Vol. 8
·期 10
·842
·
IF 3.504
Hui Liu,Zhi-Guang Zhang,Hong-Wei He,Xiao-Xiong Wang,Jun Zhang,Qian-Qian Zhang,Yan-Fu Tong,Hong-Ling Liu,Seeram Ramakrishna,Shi-Ying Yan,Yun-Ze Long
To meet the urgent need of society for advanced photocatalytic materials, novel visible light driven heterostructured composite was constructed based on graphitic carbon nitride (g-C3N4) and fibrous TiO2. The g-C3N4/TiO2(CNT) composite was prepared through electrospinning technology and followed calcination process. The state of the g-C3N4and fibrous TiO2was tightly coupled. The photocatalytic performance was measured by degrading the Rhodamine B. Compared to commercial TiO2(P25®) and electrospun TiO2nanofibers, the photocatalytic performance of CNT composite was higher than them. The formation of CNT heterostructures and the enlarged specific surface area enhanced the photocatalytic performance, suppressing the recombination rate of photogenerated carriers while broadening the absorption range of light spectrum. Our studies have demonstrated that heterostructured CNT composite with an appropriate proportion can rational use of visible light and can significantly promote the photogenerated charges transferred at the contact interface between g-C3N4and TiO2.
✓ 已验证
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2018
·Vol. 42
·期 11
·9324-9331
·
IF 3.201
Jie Li,Saisai Cheng,Tianxing Du,Ningzhao Shang,Shutao Gao,Cheng Feng,Chun Wang,Zhi Wang
In this work, a porous g-C3N4 nanosheets/reduced graphene oxide (rGO) composite was synthesized via the hydrothermal co-assembly of GO and g-C3N4 nanosheets (g-C3N4 NS). Compared with g-C3N4 NS, rGO and bulk g-C3N4/rGO, the g-C3N4 NS/rGO supported Pd nanocatalyst displayed a remarkable catalytic activity for the hydrogenation of alkenes with formic acid and formates as the hydrogen source at atmospheric pressure. Among all the as-prepared Pd-g-C3N4 NS/rGO catalysts, the optimized Pd-g-C3N4 NS/rGO20 exhibited the highest turnover frequency of 133 mol mol−1 Pd h−1, which is among the highest value reported in documents. 99% conversion and 99% selectivity were achieved after 30 min reaction at 30 °C for the hydrogenation of nitrobenzene. In addition, Pd-g-C3N4 NS/rGO20 exhibited an excellently high stability after five successive cycles without significant loss of its catalytic activity.
✓ 已验证
DOI
高影响因子
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
·
2025
·
IF 4.6
Yuhan Yang,Lin Liu,Jiao Yu,Yang Zhang,Yuanyue Lu,Yong Mei,Yingying Gu
Heavy metal contamination, especially Pb 2+ and Cd 2+ , poses severe risks to food safety and human health, creating an urgent need for rapid and sensitive detection methods. Herein, a novel tin-based electrochemical sensor with graphitic carbon nitride (g-C 3 N 4 ) and multi-walled carbon nanotubes (MWCNTs) modified glassy carbon electrode (GCE) was developed for the simultaneous detection of Pb 2+ and Cd 2+ in vegetables. The SnO 2 /g-C 3 N 4 @MWCNTs/GCE was systematically characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared spectroscopy (FT-IR). The synergistic effect of the g-C 3 N 4 @MWCNTs composite and the SnO 2 film effectively facilitated electron transfer and accelerated the response, enhancing sensing performance. Under optimal conditions, the linear range of the sensor for Pb 2+ and Cd 2+ was 10–400 μg·L −1 . The limits of detection (LODs) were 0.40 μg·L −1 and 0.61 μg·L −1 for Pb 2+ and Cd 2+ , respectively. In vegetable samples, the recoveries of Pb 2+ and Cd 2+ in spinach, lettuce, and cabbage were all within the range of 95–105 %. This study provides a new method to quickly, sensitively, and simultaneously detect Pb 2+ and Cd 2+ in vegetables. These findings expand the application of environmentally friendly tin-based electrochemical sensors for actual sample detection.
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Bio
·
2026
·
IF 11
Chongqing Yu,Zujiang Liu,Jin Ye,Ruixin Zhang,Min Ren,Fulin Deng,Anning Zhao,Ali Abou-Hassan,Yichun Wang,Yao Zhang,Valentim A.R. Barão,Liqun Xu,Jie Xu,Xi Rao
Visible-light-driven antibacterial photocatalysis holds great promise for infected wound management; however, efficient and biologically compatible heterointerfaces remain limited. Here, we constructed a graphdiyne-enabled TiO 2 /g-C 3 N 4 based bio-heterojunction (TCN/GDY) by growing graphdiyne (GDY) onto a TiO 2 /g-C 3 N 4 scaffold, which couples enhanced visible-light harvesting with antibacterial wound therapy. Structural characterization, photoelectrochemical measurements, valence band analysis, in situ XPS, electron paramagnetic resonance, and density functional theory support interfacial electronic coupling, an enhanced photoresponse, and reactive oxygen species generation. These observations are consistent with a proposed dual S-scheme like mechanism. Under 420 nm LED irradiation, TCN/GDY achieved >99% elimination of Escherichia coli , 99.40 ± 0.34% elimination of Staphylococcus aureus , and 98.65 ± 0.74% elimination of methicillin-resistant S. aureus ( MRSA ), and reduced retained crystal-violet-stained MRSA biofilm biomass by 78.57 ± 2.38% under the tested treatment and washing conditions. Multi-omics analysis identified treatment associated changes in central metabolism and nutrient transport. In an MRSA -infected mouse wound model, visible-light-activated TCN/GDY reduced the bacterial burden by 97.98 ± 1.04% and decreased the residual wound area to 2.93 ± 1.46% by day 11. This study establishes a graphdiyne-enabled TiO 2 /g-C 3 N 4 -based bio-heterojunction as a visible-light antibacterial photocatalytic platform for infected wound healing.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）