Surfaces and Interfaces
·
2025
·
IF 6.3
Fan Yang,Jingrui Duan,Yan Chen,Huiying Meng,Wanying Zhang,Ruiting Li,Wen Luo,Yang Wu,Yong Wang,Peng Zhang,Yifan Zhang
In this study, a bimetallic Pt-Ni alloy catalyst, designated PN 0.5 /VCN 1 , was synthesized with the objective of enhancing the photocatalytic hydrogen evolution performance. Photoelectrochemical characterizations confirm that PN 0.5 /VCN 1 significantly improves light absorption, charge transfer efficiency, and proton adsorption/activation capability, leading to enhanced photocatalytic performance. The results demonstrate that under optimized conditions (300 W Xe lamp, lactic acid as the hole scavenger) PN 0.5 /VCN 1 achieves a hydrogen evolution rate of 8.77 mmol·g -1 ·h -1 (4079 times higher than pure CN) with remarkable stability. And stability tests over four cycles (20 h total) indicate no significant activity loss. This enhancement is attributed to the localized surface plasmon resonance (LSPR) effect of the alloy, interfacial electron redistribution, and synergistic metal-defect interactions. The modification strategy proposed in this study offers a rational and cost-effective approach for efficient photogenerated charge separation and accelerated proton reduction kinetics, providing a competitive advantage in the market. This work provides a foundation for designing high-performance photocatalytic systems.
研究领域:
材料科学
·
能源化学
·
光催化
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2019
·
IF 4.916
Menghan Zang,Huijuan Su,Lihua Lu,Feng Li
A group of luminescent dinuclear Ir(III) complexes were synthesized to study the application possibility as luminescent G-quadruplex (G4) sensors. According to the results, the dinuclear Ir(III) complexes 1 – 5 were assessed as selective G4 sensors. Among them, complex 5 not only demonstrates the highest specificity towards G4, but also shows linearly enhanced luminescent intensity with the increase of split G4 concentration. Complex 5 was thus utilized to establish a label-free split G4-based detection platform for luminescent detection of transcription factor (TF). This luminescent assay is simple and sensitive with the detection limit of 0.027 nM for NF-κB p50 in aqueous solution. The split G4-based TF sensing platform also worked well in diluted human serum, demonstrating high application potential for biological sample analysis.
研究领域:
生物化学
·
分析化学
·
分子生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Tiefeng Xu,Chenyu Li,Ke Xiang,Yingxin Lu,Wangyang Lu
The photocatalytic removal of organic pollutants from wastewater has gained significant attention in recent years due to its environmental benefits and cost-effectiveness. In this study, a pyrolytic iron phthalocyanine/graphitic carbon nitride (FePc/g-C 3 N 4 ) composite photocatalyst was synthesized using ball milling and thermal cracking, and its performance in photocatalytic degradation along with the underlying mechanisms was investigated. Under solar light irradiation, the pyrolytic FePc/g-C 3 N 4 photocatalyst achieved complete carbamazepine (CBZ) degradation within 12 min by activating peroxymonosulfate (PMS), demonstrating a 29 % enhancement in degradation efficiency compared to the unpyrolytic FePc/g-C 3 N 4 . Additionally, the stability of the catalyst improved significantly post-pyrolysis, maintaining over 98 % degradation efficiency across nine cycles. The thermal treatment disrupted the phthalocyanine structure, modifying the coordination environment of the central Fe atom and facilitating the transfer of photogenerated charge carriers. This research provides valuable insights for designing stable single-atom iron-based composite photocatalysts.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Materials Science and Engineering B-Advanced Functional Solid-State Materials
·
2017
·
IF 2.552
Yanxiang Zhang,Juan Wu,Yangyang Deng,Yanjun Xin,Huiling Liu,Dong Ma,Nan Bao
Ag/GO/g-C 3 N 4 composites were successfully synthesized by a sonochemical method. The structure and properties of the composites at various Ag loadings were characterized, and the Ag nanoparticles were confirmed by XRD, TEM and XPS measurements. UV–Vis diffuse reflectance spectra showed the presence of surface plasmon peak for Ag at 550 nm. The Ag/GO/g-C 3 N 4 composites demonstrated excellent activity in photocatalytic degradation of Rh B under visible light irradiation, and 5% of Ag nanoparticle was found to be the most suitable loading. The enhanced photocatalytic activity was ascribed to the role of GO nanosheets and Ag nanoparticles. The GO nanosheets acted as electrons transporter and acceptor in the composite and inhibited the charge recombination. The Ag nanoparticles acted as an electron traps to facilitate the separation of photogenerated electron-hole pairs and promoted interfacial electrons transfer. The OH ads and h + were the major radicals to be involved in the photocatalytic process.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Benlin Dai,Xin Chen,Xiaofan Yang,Gang Yang,Shijie Li,Lili Zhang,Feihu Mu,Wei Zhao,Dennis Y.C. Leung
A novel S-scheme Au/g-C 3 N 4 /BiO 1.2 I 0.6 plasmonic heterojunction was constructed by calcining a mixture of flower-like BiOI and Au/g-C 3 N 4 nanosheets for the first time. This Au/g-C 3 N 4 /BiO 1.2 I 0.6 heterojunction exhibited excellent photocatalytic activity in bisphenol AF (BPAF) degradation and Cr(VI) reduction with high cycle stability under visible light irradiation. In particular, the photocatalytic performance of the optimum material developed (4-Au/g-C 3 N 4 /BiO 1.2 I 0.6 ) can reach 0.0174 min −1 (apparent rate of BPAF degradation) and 0.0204 min −1 (apparent rate of Cr(VI) reduction), which were 6.5 and 3.7 times that of pristine g-C 3 N 4 , respectively. The high photocatalytic performance was due to the high efficiency of charge separation, the excellent light absorption of localized surface plasmon resonance (LSPR) caused by the Au deposition, and the formation of S-scheme heterojunctions, which maintained strong photocatalytic reduction and oxidation activity. Noticeably, the charge density difference and band offsets of the g-C 3 N 4 /BiO 1.2 I 0.6 were calculated. The results revealed that an internal electric field (IEF) was created, which further demonstrated the formation of an S-scheme photocatalytic mechanism.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2021
·
IF 10.588
Bin Zhang,Jun Ma,Huizhong Chi,An Ding,Yanjun Xin,Yingying Ma,Qingliang Liu,Xu He
Given the limitations of conventional vacuum ultraviolet (VUV) systems, a novel vacuum ultraviolet/graphite carbon nitride (VUV/g-C 3 N 4 ) system with high adaptability to varying environmental conditions was developed. Compared with conventional VUV and UV/g-C 3 N 4 systems, the VUV/g-C 3 N 4 system demonstrates a much higher ability for the efficient degradation of chlorophenols (CPs). In particular, the VUV/g-C 3 N 4 system exhibits outstanding performance even at low pH and high concentrations of humic acid and SO 4 2- . Alkaline conditions and the presence of HCO 3 - can further promote CP removal. In addition, the feasibility of the VUV/g-C 3 N 4 system was verified by its stable operation in both river water and tap water . Unlike conventional photochemical systems relying on •OH, the dominant reactive species for CP degradation by the VUV/g-C 3 N 4 system was identified to be •O 2 - . This study conclusively provided a novel system for the efficient photocatalytic treatment of pollutants.
研究领域:
环境科学
·
化学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Fengyan Xie,Guofa Dong,Minghui Wu,Kechen Wu,Chunlei Huang,Shaowu Du,Yafeng Li,Mingdeng Wei,Caiyun Chen
The development of excellent ternary metal oxides as electron transporting layers (ETLs) is highly challenging for perovskite solar cells (PSCs). In this study, ZnTiO 3 (ZTO) nanoparticles are synthesized via a facile sol-gel method, and used as an ETL in PSCs. Furthermore, for the first time, iodine-doped g-C 3 N 4 (ICN) is introduced into ZnTiO 3 -based ETL as additive via a glass-assisted annealing route. Characterizations demonstrate that the ZnTiO 3 -based ETL with the addition of ICN will enhance the PCE, which is attributed to the improved crystalline quality and more favorable energy level alignment. Moreover, the existence of ICN will strengthen the interfacial cohesion between perovskite layer and ETL as well as retard the perovskite crystals from decomposing, leading to the high quality capping light-harvesting layer upon ICN-modified ZnTiO 3 (ZTO-ICN) film. Consequently, a champion device fabricated with ZTO-ICN ETL achieves a maximum PCE of 19.17 % with an open circuit voltage (V oc ) of 1.012 V, a short-circuit current density (J sc ) of 26.32 mA cm −2 and a fill factor (FF) of 0.720 under AM 1.5 G sunlight (100 mW cm −2 ).
研究领域:
材料科学
·
能源技术
·
光伏器件
✓ 已验证
DOI
PubMed
高影响因子
Journal of Central South University
·
2022
·Vol. 29
·期 5
·1447-1462
·
IF 2.392
Yang Ting,Hu Xin-yu,Wang Jun-tao,Yang Tian-li,Wang Wen-lei
A series of In x Sb 2− x S 3 nanosheets modified g-C 3 N 4 (In x Sb 2− x S 3 -TCN) heterojunctions with different g-C 3 N 4 contents were fabricated by an in situ deposition method. All the In x Sb 2− x S 3 -TCN composites were applied as photocatalysts in Cr(VI) polluted water treatment and the results displayed that In x Sb 2− x S 3 -TCN could effectively remove Cr(VI) under visible light through synergistic effects of adsorption and photocatalytic reduction. Especially, In x Sb 2− x S 3 -TCN-70 (70 mg g-C 3 N 4 ) exhibited the most excellent adsorption and photocatalytic reduction performance among all composites, which possessed a high equilibrium adsorption capacity of 12.45 mg/g in a 30.0 mg/L Cr(VI) aqueous solution, and reduced Cr(VI) to Cr(III) within 10 min under visible light irradiation. DRS and PL results indicated that the interfacial coupling effect between g-C 3 N 4 and In x Sb 2− x S 3 enhanced the utilization efficiency of visible light and suppressed photoinduced carrier recombination, which improved the photocatalytic activity of composites. Moreover, the photocatalyst exhibited satisfactory reduction activity and good stability after 5 cycles of Cr(VI) adsorption-photoreduction.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
CATALYSIS TODAY
·
2013
·
IF 2.98
Xuefeng Hu,Huanhuan Ji,Fei Chang,Yongming Luo
In this study, a rapid reduction of Cr(VI) and degradation of 2,4,6-trichlorophenol (2,4,6-TCP) in a simultaneous manner was reported through the catalysis of g-C 3 N 4 under visible light ( λ > 420 nm) irradiation. The effects of initial concentration of reactants, dissolved O 2 and pH value were investigated systematically. It indicated that, under the optimized concentration, the Cr(VI) reduction and 2,4,6-TCP oxidation could be accomplished in couple of hours in the presence of g-C 3 N 4 . And also, the O 2 involvement and low pH value were able to significantly improve the removal rate of Cr(VI) and 2,4,6-TCP. In addition, the reaction mechanism was investigated through monitoring the reduced states of Cr(VI) and active oxygen intermediates formed during photoreaction by ESR and XPS, as well as determining the degradation products of 2,4,6-TCP by HPLC–MS. The results supported that the redox reactions of Cr(VI) and 2,4,6-TCP can be performed simultaneously via a synergistic oxidation–reduction mechanism in the presence of g-C 3 N 4 under visible light irradiation.
研究领域:
环境科学
·
光催化材料
✓ 已验证
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2019
·
IF 3.206
Li Zhao,Wei Lv,Juying Hou,Yijing Li,Junling Duan,Shiyun Ai
We synthesized magnetically recyclable g-C 3 N 4 /Fe 3 O 4 /ZIF-8 nanocomposites as an emerging adsorbent for the malachite green (MG) removal in aqueous solution. Bath absorption experiments for MG were done to explore the influence (pH, adsorbent dosage and initial concentration) on its absorption process. The adsorption isotherm and kinetics followed Langmuir model and pseudo-second-order kinetic model, respectively. The thermodynamic datas (ΔG ○ < 0, ΔH ○ > 0, ΔS ○ > 0) showed that the adsorption process for MG was feasible, endothermic and spontaneous. The g-C 3 N 4 /Fe 3 O 4 /ZIF-8 nanocomposites showed excellent removal properties for MG. The maximum equilibrium adsorption capacity could reach as high as 3412 mg/g. The g-C 3 N 4 /Fe 3 O 4 /ZIF-8 nanocomposites could be easily separated using an external magnet, and the nanocomposites could be repeatedly utilized after five cycles. The ultra-high adsorption capacity, easy separation, and excellent recyclability enabled the obtained g-C 3 N 4 /Fe 3 O 4 /ZIF-8 nanocomposites a good adsorbent for the adsorption of MG.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2014
·
IF 2.235
Fa-tang Li,Ya-bin Xue,Bo Li,Ying-juan Hao,Xiao-jing Wang,Rui-hong Liu,Jun Zhao
Mesoporous γ-Al2O3 with high surface area (159 m2/g) is prepared via a precipitation method. The as-synthesized Al2O3 exhibits optical absorption ability in the ultraviolet region and is used as the active component to be combined with g-C3N4 to form effective heterostructured photocatalysts. This heterojunction structure is confirmed by X-ray diffraction, scanning electron microscopy, element map, transmission electron microscopy, high-resolution transmission electron microscopy, Fourier transform infrared, and X-ray photoelectron spectroscopy measurements. The photocatalytic performances of the composites are evaluated by the degradation of rhodamine B (RhB) and methyl orange (MO). Among the prepared photocatalysts, 2g-C3N4:1Al2O3 (weight ratio) exhibits the highest photocatalytic activity, the reaction rate constant of which is 2.5 and 3.7 times that of pure g-C3N4 in degradation of RhB and MO, respectively. The enhancement in activity of heterojunctions is ascribed to their high specific surface areas, excellent adsorption abilities for dyes, and efficient transfer of photogenerated electrons from the lowest unoccupied molecular orbital of g-C3N4 to the defect sites of γ-Al2O3.
研究领域:
材料科学
·
光催化
·
纳米材料
·
表面化学
·
环境功能材料
✓ 已验证
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Yalai Cen,Yuelan Fang,Xiaokun Li
High blood pressure is a serious condition that increases the risk of stroke and chronic disease. Amlodipine besylate (ADB), a calcium channel blocker, is employed in the management of hypertension. On this basis, the development of an uncomplicated and stable approach for the detection of ADB is very necessary. NiCo 2 O 4 has a strong structural stability, a large specific surface area, while g-C 3 N 4 has rich surface active sites, based on the advantages of both materials. NiCo 2 O 4 @g-C 3 N 4 nanocomposites were fabricated via a triple-stage hydrothermal synthesis-thermal polymerization-high-temperature calcination method, the material allowed for the creation of an ultrasensitive electrochemical sensor to measure ADB. The redox behavior of ADB at modified electrodes was analyzed using cyclic voltammetry and differential pulse voltammetry. Research shows NiCo 2 O 4 @g-C 3 N 4 /GCE composite electrodes are not easily fall off, have good repeatability, high stability, and strong anti-interference. The composite electrode has a highly sensitive signal response to ADB. At optimal parameters, the linear detection range of ADB on the composite electrode is 0.8–70 μM, with a minimum detectable concentration of 0.026 μM. This sensing platform exhibited reliable performance for real-world sample detection. The proposed method establishes an innovative detection platform for ADB, holding great promise for practical applications.
研究领域:
电化学
·
材料科学
·
分析化学
·
纳米技术
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）