JOURNAL OF NANOPARTICLE RESEARCH
·
2022
·Vol. 24
·期 4
·1-15
·
IF 2.533
Wang Zhentao,Hasan Jaafar,Wang Jingjing,Zhang Caiwei,Iqbal Waheed,Chang Ninghui,Qin Chuanguang
The treatment of dye-bearing wastes by adsorption using low-cost synthetic adsorbents is urgently needed and challenging because it offers the dual benefit of water treatment and waste management. Herein, the flower-like MoS 2 /g-C 3 N 4 nanocomposites with a size range of 200–400 nm and a specific surface area of 70.656 m2/g were synthesized as new methylene blue (MB) adsorbent materials. Their adsorption mechanisms and influences of pH, adsorbent dosage, concentration, and temperature on the adsorption properties were investigated by batch sorption experiments. Adsorption isotherm data were fitted with the Langmuir model, and the adsorption kinetic characteristics conform to the quasi second-order kinetic equation. According to thermodynamic data, methylene blue (MB) adsorption was endothermic and spontaneous, exhibiting a maximum adsorption capacity of 278.4 mg/g at 45 °C. Additionally, the impact of MB effluent on the germination of chickpea and wheat was studied contrastively with treatment of the tested materials. The results indicated that adequate adsorption of flower-like MoS 2 /g-C 3 N 4 nanocomposite could potentially treat wastewater from the textile industry to be used for irrigation and solve the problem of textile effluent disposal. Graphical abstract
研究领域:
环境科学
·
材料科学
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DOI
高影响因子
MICROCHIMICA ACTA
·
2021
·Vol. 188
·期 1
·1-11
·
IF 5.833
Lv Yuanxia,Qin Xiaohuan,Hu Kun,Huang Yong,Zhao Shulin
A novel matrix-assisted laser desorption/ionization time-of-flight mass spectrometric method (MALDI-TOF MS) for determination of highly sensitive small molecular compounds was developed based on molybdenum disulfide nanosheets hybridized with ultrathin graphitic carbon nitride (MoS 2 /g-C 3 N 4 ) as the matrix. With this approach, the synergistic effects of MoS 2 and g-C 3 N 4 enhance the UV absorption of MoS 2 /g-C 3 N 4 , increase both desorption and ionization efficiency in LDI MS, and induce higher signal-to-noise ratio of analytes when compared with the bare MoS 2 and g-C 3 N 4 matrix in the determination of amino acids, antibiotics, neutral oligosaccharides, uric acid, and polyethylene glycols (PEGs). The detection limits of these small molecular compounds are in the ranges 0.1 to 10 μg mL −1 , 1*10 −3 to 1.0 μg mL −1 , 1.0 to 10 μg mL −1 , and 2*10 −4 μg mL −1 , respectively, and the polydispersity index of these PEGs is less than 1.02. Moreover, high salt tolera`nce and homogeneous deposition on the spot results in good reproducibility. The relative standard deviations (RSDs) of shot-to-shot and spot-to-spot ( n = 15) of these compounds are less than 10.1% and 12.5%, respectively. With MoS 2 /g-C 3 N 4 , the uric acid in complicated biological samples can be directly determined in combination with LDI-TOF MS. Graphical abstract
We synthesized MoS 2 /g-C 3 N 4 nanohybrid as an efficient matrix for MALDI-TOF MS analysis of small molecules as well as quantitative detection of uric acid in human urine.
研究领域:
分析化学
·
生物医学
✓ 已验证
DOI
高影响因子
Environmental Science-Nano
·
2024
·
IF 5.8
Sichen Liu,Haotian Wang,Yumeng Xiao,David G. Calatayud,Boyang Mao,Gaoqi Zhang,Chenhui Yang,Lidong Wang,Meng Li
Drinking water contamination and water shortages are seriously exacerbated by industrial wastewater discharge. However, due to the high complexity of wastewater treatment systems, effective high-concentration pollutant removal and simplified wastewater recycling remain major challenges. Inspired by mangrove interconnected purification mechanisms, a novel cascade water treatment system has been developed using MoS2–g–C3N4 (MoG), an amphiphilic material, as the main and single component to directly produce drinking water from wastewater with high efficiency. This cascade system integrates membrane filtration and solar-powered water evaporation processes to produce clean water, while also overcoming the requirement for less polluted source water that is typically required for standalone solar evaporation-based clean water production. The MoG membrane, featuring an amphiphilic platform, exhibits a high removal rate for organic and heavy metal contaminants and achieves a water flow of 966 L m−2 h−1 bar−1 and an 80% efficiency in pollutant removal. The MoG-based aerogel enables nano- and micro-channels and exhibits a clean water production rate of 1.48 kg m−2 h−1 under 1 sun irradiation. The compact cascade system for practical use can produce drinking water that meets WHO standards from heavily polluted wastewater with an average hourly water production rate of 1.39 kg m−2 h−1. Life cycle assessment confirms that the cascade system displays significant environmental profile improvement with reduced CO2 equivalent (CO2e) levels with only 1/25 of that observed in conventional water treatment systems.
研究领域:
环境工程
·
材料科学
·
水处理
·
可持续技术
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2019
·
IF 6.393
Xinnan Liu,Lunjie Huang,Yunpeng Wang,Jing Sun,Tianli Yue,Wentao Zhang,Jianlong Wang
The cutting-edge nanozyme-based strategy for rapid detection remains significantly limited by the lack of simple synthetic method with ideal catalytic activity. In this regard, 2D nanozymes has recently emerged as a group of promising nanozymes because of their unique enzyme mimicking properties. Herein, via one-pot bottom-up co-calcination, we report a robust strategy to promote the peroxidase-like activity of 2D nanozyme by rational fabricating a 2D/2D heterojuncted nanozyme: MoS 2 /g-C 3 N 4 heterojuncted nanosheets (MoS 2 /g-C 3 N 4 HNs). With merits of the acceleration of electron transfer and the synergistic effect of MoS 2 and g-C 3 N 4 as well as high affinity to the catalytic substrates, the 2D/2D MoS 2 /g-C 3 N 4 heterojuncted nanozyme shows enhanced peroxidase-like activity over the pure g-C 3 N 4 nanosheets and MoS 2 nanosheets. As a proof-of-concept application, a colorimetric sensor based on this 2D/2D heterojuncted nanozyme was developed to detect sulfide ions (S 2− ), and the detection limit was found to be as low as 37 nM. Therefore, the current work not only demonstrates a powerful strategy to improve the activity of 2D nanozymes but also establish a facile approach for water-safety monitoring.
研究领域:
生物化学
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材料科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Food Measurement and Characterization
·
2023
·
IF 3.4
Wei Qingyi,Dong Qirong,Pu Hongbin,Sun Da-Wen
Aquaculture fungicide causes threats to the human community and their sensitive detection are thus essential for food safety. Herein, MoS 2 /g-C 3 N 4 @Au heterojunction-based recyclable SERS substrate was developed for fungicide detection. The optimal substrate exhibited good SERS performance with a detection limit as low as 9.908 × 10 −5 mg L −1 for malachite green (MG). Furthermore, an MCN@Au-based photodegradation of crystal violet (CV) under simulated light irradiation was realized, resulting in a degradation rate of 95.6%. With the dual function of the as-synthesized materials, good reusability of the substrates for at least six “detection-degradation” cycles was achieved. In addition, the MG in prawn extract could be sensitively determined with a satisfactory recovery from 91.60 to 124.00%. This work paves an avenue for the fabrication of heterojunction-based recyclable SERS substrates and provides a novel weapon for food safety protection.
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Cheng Yang,Xinyue Yang,LiXun Feng,ZiJian Chen,Jia He,HuiTing Sui,Huajun Sun
Piezoelectric photocatalysis is emerging as a promising approach for green environmental protection. Herein, a molybdenum disulfide/graphitic carbon nitride S-scheme heterojunction catalyst achieved a Rhodamine B degradation rate exceeding 99 % within 30 min under the synergistic effects of light and ultrasound, along with a hydrogen (H 2 ) production rate of 16.2 mmol g −1 h −1 . The synergy of ultrasound and light improved catalytic efficiency by approximately 45 % compared with light alone. Experimental characterizations, including Kelvin probe force microscopy, in situ X-ray photoelectron spectroscopy, and density functional theory calculations, confirmed the presence of dual built-in electric fields arising from band alignment and strain-induced polarization. These fields facilitated efficient electron–hole separation, thereby greatly enhancing the overall piezoelectric photocatalytic performance and resulting in efficient use of mechanical and solar energy for H 2 production and pollutant decomposition.
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2022
·Vol. 33
·期 20
·16077-16098
·
IF 2.779
Chen Keke,Feng Hange,Li Lingwei,Luo Menghao,Xue Shaolin,Sang Jingxin
The excellent photoresponse of semiconductors enables them as a promising photocatalyst for photocatalytic degradation of organic pollutants and antibiotics, but their practical applications are limited by photogenerated carrier recombination, instability, and fixed energy band positions. Herein, we designed and synthesized a dual Z-scheme flower-like spherical Ag 3 PO 4 /MoS 2 /g-C 3 N 4 (AMN) photocatalyst loaded with different mass of g-C 3 N 4 (3, 5 and 7 mg). Under visible light irradiation, MoS 2 enhanced the light absorption range of AMN composite. The holes concentrated in the valence band of Ag 3 PO 4 provide strong oxidation capacity, and the electrons retained in conduction band of g-C 3 N 4 provide strong reduction ability in the photocatalytic system. It is helpful to improve the separation efficiency of photogenerated carriers and enhance the photocatalytic activity of AMN composite. The AMN photocatalyst loaded with 5 mg g-C 3 N 4 (AMN-5) has the optimal photocatalytic activity. The photocatalytic degradation efficiency of the photocatalyst for methylene blue (MB) within 24 min is 3.98, 1.85, and 1.17 times that of g-C 3 N 4 , Ag 3 PO 4 , and Ag 3 PO 4 /MoS 2 , respectively. After three cycles, the degradation efficiency of AMN-5 for MB decreased from 99.44% to 90%, about 3.79 times of Ag 3 PO 4 (23.77%). In addition, the optimal AMN-5 photocatalyst also has excellent photocatalytic degradation efficiency for Rhodamine B (RhB) and tetracycline (TC). This design and concept provide a promising insight for the photocatalytic degradation of pollutants.
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
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Yan Zhuang,Shuang Meng,Xue Yang,Dongxuan Guo,Dantong Zhang,Tai Peng,Yue Li,Jinlong Li
The formation of amorphous-crystalline heterojunctions has been recognized as an exceptionally effective strategy for enhancing the separation and transfer of photogenerated charge carriers, thereby improving photocatalytic efficiency. In this study, amorphous-crystalline MoS 2 /g-C 3 N 4 /Co 3 O 4 ternary heterojunctions with a unique flower-like structure were synthesized via the integration of g-C 3 N 4 nanosheets and amorphous MoS 2 onto Co 3 O 4 microspheres with a floral structure using a simple solvothermal method followed by acid treatment. Density functional theory (DFT) calculations revealed that the unique floral morphology, combined with the formation of amorphous-crystalline heterojunctions, facilitates the efficient transfer of photogenerated carriers while simultaneously suppressing the recombination of electron-hole pairs. The optimized MoS 2 /g-C 3 N 4 /Co 3 O 4 (3 %) heterojunction exhibited remarkable photocatalytic performance, achieving 82.1 % degradation of Rhodamine B (5 mg L −1 ) under visible-light irradiation within 90 min. Furthermore, the photocatalyst exhibited excellent stability and reusability, as confirmed through cycling experiments, and efficiently decomposed Rhodamine B and its intermediates into small, non-toxic molecules. This work highlights the successful development of a highly active, recyclable amorphous-crystalline ternary heterojunction with a flower-like structure, providing a novel and efficient strategy for the visible-light-driven removal of organic pollutants.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Catalysts
·
2025
·Vol. 15
·期 9
·808
·
IF 4
Shuai Liu,Yipei Chen,Honglei Zhang,Yang Meng,Tao Wu,Guangsuo Yu
Constructing heterojunction photocatalysts with efficient interfacial charge transfer is critical for solar-driven hydrogen evolution. In this study, a highly dispersed MoS2/g-C3N4composite was successfully synthesized via a stirring-assisted hydrothermal in situ growth strategy. The introduction of stirring during synthesis significantly enhanced the uniform dispersion of MoS2nanosheets and exposed abundant edge sites, leading to well-integrated heterojunctions with enhanced interfacial contact. Comprehensive structural and photoelectronic characterizations (XRD, SEM, TEM, EDS mapping, UV–Vis, TRPL, EIS, EPR) confirmed that the composite exhibited improved visible-light absorption, accelerated charge separation, and suppressed recombination. Under simulated solar irradiation with triethanolamine (TEOA) as a sacrificial agent, the optimized 24% MoS2/g-C3N4-S catalyst achieved a high hydrogen evolution rate of 14.33 mmol·g−1·h−1at a catalyst loading of 3.2 mg, significantly outperforming the unstirred and pristine components, and demonstrating excellent cycling stability. Mechanistic studies revealed that the performance enhancement is attributed to the synergistic effects of Type-II heterojunction formation and edge-site-rich MoS2co-catalysis. This work provides a scalable approach for non-noble metal interface engineering and offers insight into the design of efficient and durable photocatalysts for solar hydrogen production.
研究领域:
光催化
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材料科学
·
纳米技术
·
能量转换
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Water Process Engineering
·
2025
·
IF 6.7
Yang Yu,Lichao Xu,Kaiyuan Xu,Yan Li,Hao Chen,Dongxu Zhang,Yuanzi Chen,Yue Liu,Wenyue Qi
The construction of S-scheme heterojunctions has drawn widespread attention within the photocatalysis field due to their capacity for efficient separation of photogenerated carriers, leading to excellent photo-oxidation-reduction performance. Herein, a novel S-scheme loofah biochar/MoS 2 /g-C 3 N 4 (LB/MS/CN) heterojunction was successfully constructed by ultrasonication in 50 % ethyl alcohol and heat treatment in N 2 atmosphere. Degradation experiments showed that the 5 % LB/MS/CN ternary photocatalyst had optimal photocatalytic efficiency (96.4 %) for the degradation of rhodamine B (RhB), and the reaction rate (k) of this photocatalyst (0.05420 min −1 ) was 5.4 times that of unmodified CN (0.01001 min −1 ). Ultraviolet-visible diffuse reflectance spectra, Mott-Schottky, and free radical trapping experiments suggested that the photogenerated carriers in LB/MS/CN were transferred through the S-scheme structure. Consequently, the co-catalytic action of LB and the synergistic impact of the heterojunction structure between CN and MS led to a reduced photogenerated carrier recombination rate. Furthermore, LB/MS/CN had outstanding stability and the capacity to maintain RhB degradation performance under various environmental conditions (H 2 PO 4 − , NO 3 − , SO 4 2− , HCO 3 − , NaCl, humic acid (HA), and real water), showing good promise for practical applications. Thus, this work provides a possible strategy for purifying wastewater under visible light.
研究领域:
环境科学
·
材料科学
·
光催化
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2020
·
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.
研究领域:
材料科学
·
光催化
·
环境修复
·
纳米材料
·
能量转换
✓ 已验证
DOI
高影响因子
Food and Bioprocess Technology
·
2026
·Vol. 19
·期 3
·152
·
IF 5.6
Yang Lingfan,Liu Ruiqi,Shi Yingkun,Li Changhao,Wang Guangxian,Xie Haijiao,Luo Ruiming,Wang Songlei
Xanthine (XA) and hypoxanthine (HA) are key biochemical markers of meat freshness, yet rapid, wide-range, and enzyme-free quantification in complex meat matrices remains challenging. Here we report a density functional theory (DFT)-guided Cu–MoS 2 /g-C 3 N 4 heterostructure electrochemical sensor for broad-range non-enzymatic detection of XA and HA. The heterojunction prepared via a hydrothermal and ultrasonic strategy provides an efficient charge-transport pathway and enriched catalytic interfaces. DFT calculations reveal pronounced interfacial charge redistribution and strong adsorption of XA and HA on the Cu–MoS 2 /g-C 3 N 4 surface, with adsorption energies of − 0.98 eV for XA and − 2.16 eV for HA, explaining the boosted electrooxidation response. The sensor achieves low detection limits of 0.15 μM for XA and 0.28 μM for HA and wide linear ranges from 0.913 to 1643.5 μM and from 0.918 to 1653.1 μM, respectively, and enables simultaneous quantification from 0.5 to 400 μM with excellent linearity. Good stability, reproducibility, and anti-interference capability are obtained. In real meat samples, recoveries from 90.7% to 108.3% for XA and from 91.3% to 111.4% for HA agree well with high-performance liquid chromatography, supporting rapid meat freshness evaluation.
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）