SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Bo He,Zixuan Zhao,Lixian Song,Weibao Liu,Ying Yang,Jiangwei Shang,Xiuwen Cheng
The degradation of carbamazepine (CBZ) by activated peroxymonosulfate (PMS) using the (3R + 2H)-CuFeO 2 nanocomposite photocatalyst was investigated in this work. The (3R + 2H)-CuFeO 2 were prepared by hydrothermal method at 160°for 15 h utilizing ferrous sulphate heptahydrate (FeSO 4 ·7H 2 O) and copper (II) sulphate (CuSO 4 ·5H 2 O) as raw materials. Meanwhile, the (3R + 2H)-CuFeO 2 was characterized and analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM), isothermal nitrogen adsorption (BET), and X-ray energy spectroscopy (EDS). The best removal effectiveness was 85.96% when critical factors such as the starting pH value, catalyst dosage, and PMS quantity were turned. The action of anions was then investigated further. The high catalytic efficiency was due to the synergistic impact of Fe 3+ /Fe 2+ and Cu 2+ /Cu + redox cycles. The plausible CAZ breakdown routes were postulated based on the results of the liquid chromatograph-mass spectrometer (LC-MS). Finally, we have studied the most probable of cation migration by the 3DBVSMAPPER program and BVEL calculation concept to correlate the structural characteristics of both materials and their ionic conductivity . The formed channel shows the uniform transport of ions, which can optimize the solid–liquid interface, hinder the influence of water molecules on the material, and protect the material.
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ADVANCED MATERIALS
·
2024
·Vol. 37
·期 23
·2404013
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IF 27.4
Yunxia Hu,Jun Wang,Mohsen Tamtaji,Yuan Feng,Tsz Wing Tang,Mohammadreza Amjadian,Ting Kang,Mengyang Xu,Xingyi Shi,Dongxu Zhao,Yongli Mi,Zhengtang Luo,Liang An
Van der Waals junctions hold significant potentials for various applications in multifunctional and low-power electronics and optoelectronics. The multistep device fabrication process usually introduces lattice mismatch and defects at the junction interfaces, which deteriorate device performance. Here the layer engineering synthesis of van der Waals homojunctions consisting of 2H-MoTe 2 with asymmetric thickness to eliminate heterogenous interfaces and thus obtain clean interfaces is reported. Experimental results confirm that the homostructure nature gives rise to the formation of pristine van der Waals junctions, avoiding chemical disorders and defects. The ability to tune the energy bands of 2H-MoTe 2 continuously through layer engineering enables the creation of adjustable built-in electric field at the homojunction boundaries, which leads to the achievement of self-powered photodetection based on the obtained 2H-MoTe 2 films. Furthermore, the successful integration of 2H-MoTe 2 homojunctions into an image sensor with 10 × 10 pixels, brings about zero-power consumption and near-infrared imaging functions. The pristine van der Waals homojunctions and effective integration strategies shed new insights into the development of large-scale application for two-dimensional materials in advanced electronics and optoelectronics.
研究领域:
光电子学
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纳米电子学
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二维材料
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半导体器件
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图像传感技术
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Small
·
2026
·
IF 11.8
Ning Li,Jinyu Zhang,Jiafeng Ma,Chaorui Xue,Qing Chang,Lei Liu,Xiangqian Fan,Caihong Hao,Shaobin Wang,Shengliang Hu,Wenjie Tian
Efficient photocatalysis requires coordinated regulation of charge transport across both bulk and interfacial regions. Here, we introduce an in situ hydrothermal-solvothermal method that simultaneously creates a defect-induced p-n homojunction in ZnIn 2 S 4 (ZIS) and a type-II heterojunction with hybrid 1T-2H WS 2 , forming antiparallel internal-interfacial built-in electric fields (BIEF) that are confirmed by spectroscopic, electronic, optical, and theoretical analyses. Under the guidance of this dual-field coupling effect, photoexcited carriers undergo more efficient separation, enabling the effective modulation of bulk carrier migration and directing electrons toward sulfur-vacancy (S v ) sites in ZIS for efficient hydrogen evolution. The hybrid 1T-2H phases of WS 2 further enhance light absorption and facilitate rapid charge generation and transfer, reinforcing the dual-BIEF-driven transport pathway. The optimized ZIS/WS 2 photocatalyst achieves a hydrogen evolution rate of 44.97 mmol g −1 h −1 and an apparent quantum efficiency of 24.54% at 400 nm. This work establishes antiparallel dual-BIEF engineering combined with 1T-2H hybrid-phase modulation as a platform for directional charge-dynamic control, offering a pathway toward efficient solar-to-hydrogen conversion.
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高影响因子
MATERIALS RESEARCH BULLETIN
·
2025
·
IF 5.7
Dawei Gao,Haixiang Wang,Jiajun Tang,Qiaoli Lu,Feifei You,Chao Ye,Lili Wang,Jian Qi
Conventional MoS 2 catalysts face challenges, including weak piezoelectric response, reliance on energy-intensive ultrasound, and limited active sites, reducing their efficiency in degrading organic pollutants. In this work, 1T/2H heterostructured MoS 2 nanoflowers were synthesized via an ionic liquid-assisted hydrothermal method, enabling efficient piezocatalytic activation of peroxymonosulfate (PMS) under mild mechanical stirring. The 1T/2H MoS 2 /PMS system rapidly degraded 95.9 % of Rhodamine B in 15 min, with a kinetic rate 4.43 times higher than conventional MoS 2 , and showed excellent cycling stability. This superior performance was due to enhanced piezoelectric polarization at heterointerfaces, which improved charge carrier separation, and the use of low-energy mechanical stirring instead of ultrasound for activation. Optimized interfacial charge transfer pathways also boosted the generation of superoxide anions (•O₂⁻) and singlet oxygen (¹O 2 ). Moreover, immobilizing 1T/2H MoS 2 on conductive carbon cloth enhanced recyclability and operational feasibility, offering a sustainable solution for water treatment technologies.
研究领域:
环境科学
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材料科学
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催化
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纳米技术
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水处理
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高影响因子
JOURNAL OF COORDINATION CHEMISTRY
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2015
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IF 2.012
Yan Xie,Junjie He,Tingting Wang,Heping Zeng
Reactions of Zn(II) salts, 5-(4-(1H-imidazol-1-yl)phenyl)-1H-tetrazolate (HIPT) and 2-mercaptobenzoic acid or 2-propyl-1H-imidazole-4,5-dicarboxylic acid (H3PrIDC), result in two mixed-ligand coordination polymers (CPs), [Zn2(IPT)(DSDB)(OH)]n (H2DSDB = 2,2′-disulfanediyldibenzoic acid, 1) and [Zn2(IPT)(PrIDC)(H2O)]n (H3PrIDC = 2-propyl-1H-imidazole-4,5-dicarboxylic acid, 2). Compound 1 possesses a 2-D structure built by 1-D [Zn(IPT)]n chains and DSDB2− connectors, in which the DSDB2− is generated via in situ reaction from 2-mercaptobenzoic acid. It displays a new intricate 4-nodal {3·4·6·7·8·9}{3·6·7·8·9·10}{3·8·9}{4·6·8} topology. Compound 2 displays a 3-D framework with new 3-connected topology with Schläfli symbol of (4·8·10) (8·122), in which the 1-D Zn-carboxylate chains were bridged by 3-connected IPT− ligands. The thermal stabilities and luminescence properties of 1 and 2 have also been studied. The compounds exhibit intense solid-state fluorescent emissions at room temperature.
研究领域:
化学
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材料科学
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高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2023
·
IF 6.1
Mengyu Xing,Jing Zhao,Jingya Zhang,Yinggu Wu,Raja Asad Ali Khan,Xinyu Li,Rui Wang,Tingting Li,Tong Liu
The postharvest losses of litchi caused by litchi downy blight are considerably high. We identified a natural antifungal volatile pyrone, 6-pentyl-2H-pyran-2-one (6PP), synthesized by Trichoderma erinaceum LS019-2 and investigated as biocontrol for litchi downy blight and preservation. 6PP significantly inhibited the growth and sporangial germination of Peronophythora litchii, the causal agent of litchi downy blight, and caused severe cellular and intracellular destructions, as evidenced by electron microscopic analysis. Furthermore, in the treatment, the fruit kept better color, higher weight, and antioxidant activity, so it can maintain freshness and prolong shelf life. Metabolome analysis confirmed the decline of lipids and the accumulation of organic acids in litchi fruits in response to 6PP treatment. These effects from 6PP could alleviate disease effects and prolong the shelf life of litchi fruits. These findings suggested that 6PP could be a useful natural product to control downy blight disease and a new preservative of litchi fruits.
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PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·124731
·
IF 7.5
Nan Zhang,Menglin Gao,Wenru Cheng,Zhaocun Song,Xichen Yang
The development of efficient and cost-effective electrocatalysts for hydrogen production is crucial for advancing a carbon-neutral circular economy. The hydrogen evolution reaction (HER) performance of MoS 2 in alkaline media is hindered by its sluggish water-dissociation kinetics and inert basal planes. Herein, we report a novel ternary heterostructure, consisting of γ-FeOOH nanosheets and smaller Ni 3 S 2 nanosheets grown on vertical 1 T/2H MoS 2 nanosheets, that exhibits enhanced HER activity. Systematic investigations suggest that the enhanced HER performance is associated with the interfacial interactions among Ni 3 S 2 , γ-FeOOH, and MoS 2 , which involve strain coupling, electronic coupling, and functional synergy. Accordingly, the Ni 3 S 2 /γ-FeOOH/MoS 2 /CC electrode requires overpotentials of only 99.6 and 176.1 mV at 10 and 100 mAcm −2 , respectively. Remarkably, it outperforms commercial Pt/C at current densities exceeding 173.2mA cm −2 and requires an overpotential of only 213.9mV at 300 mA cm −2 , while also exhibiting robust operational stability at high current densities, highlighting its promise for further exploration toward practical alkaline water electrolysis systems. This work provides a promising strategy for designing high-performance, earth-abundant MoS 2 -based HER catalysts for alkaline water electrolysis.
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MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Jinxin Chen,Cheng Zhang,Jiani Liu,Lunyan Wang,Ying Gu,Yaguang Yun,Kun Ge
Developing stable, noble-free SERS substrates with high selectivity and reproducibility remains a major analytical challenge. Herein, a novel noble-free substrate of TiO 2 decorated flower-like 2H-MoS 2 (2H-MoS 2 /TiO 2 ) heterostructure was fabricated for sensitive and selective analysis of mercury ion (Hg 2+ ) in environmental water, demonstrating high potential for monitoring real water samples following standard pretreatment. The 2H-MoS 2 /TiO 2 heterostructure can be simply prepared by two-step hydrothermal method, as well as exhibiting high SERS activity with low minimum detectable concentration (1.0 μg/L) and promising enhancement factor (about 10 5 ) for Rhodamine 6G and derivatives. The good Raman enhancement attributes to multiple synergistic effect of high adsorbability of 2H-MoS 2 /TiO 2 , molecular resonance and significant charge transfer effect, which was investigated by experiments and density functional theory simulations. The indirect analytical method for Hg 2+ based on good SERS activity and specificity of R-NH 2 for Hg 2+ was established. The low limit of detection (0.16 μg/L) with linearity of 0.5 μg/L–1.0 mg/L for Hg 2+ can be obtained. The recoveries of Hg 2+ in environmental water is 82.3–106.7 % with low relative standard deviations of 2.1–6.3 %. More than just a high-performance substrate, this work provides a general design strategy for constructing stable and practical noble-free heterojunctions, significantly advancing the development of reliable SERS methodologies for on-site environmental analysis.
研究领域:
材料科学
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分析化学
·
环境监测
·
纳米技术
·
传感器与检测
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2019
·
IF 6.361
Ruixia Yuan,Jincheng Liu,Zhijun Li,Yanguang Chen,Zhaohui Wang,Zhanjian Liu,Guolin Jing,Yanji Zhu,Huaiyuan Wang
Single-stage oil/water separation membranes usually suffer from weak chemical stability, susceptible mechanical damage and relatively low permeating flux, and the sophisticated preparation processes also limit their massive utilization. In this work, Cu(OH) 2 nanoneedles coated copper mesh (CM) is prepared by simple and eco-friendly anodic oxidation at a current density of 4 mA/cm 2 for 6 min, which is the most efficient route reported so far. The mesh exhibits outstanding superhydrophilicity and underwater superoleophobicity towards various oils with contact angles up to 164.9°, achieving superior oil/water separation efficiency of above 99.5% and ultrahigh permeating flux of 191 160 L·m −2 h −1 solely driven by gravity. Impressively, the Cu(OH) 2 /CM demonstrates excellent chemical stability and anti-fouling performance when exposed to acidic and strongly alkaline solutions, saturated NaCl solution and various organic solvents . High durability to withstand mechanical challenges, e.g. high-power sonication and sand abrasion, is experimentally confirmed owing to strong cohesional strength of Cu(OH) 2 nanoneedles on CM surface. Importantly, the Cu(OH) 2 /CM exhibits favorable long-term recyclability with stable microstructure morphologies even after 50 cycles. These distinct advantages endow the Cu(OH) 2 /CM to be an ideal candidate to efficiently separate oil pollutants from water. The oil/water separation mechanisms are proposed based on the concept of intrusion pressure.
研究领域:
材料科学
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环境工程
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PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2023
·
IF 22.1
Qing-rui Zeng,Zi-ang Jia,Xu Liu,Bo-wen Xiu,Jin-ping Cheng
The rational application of piezoelectric polarization properties in non-centrosymmetric heterojunctions to improve charge separation efficiency is a novel approach for enhancing their photoelectrocatalytic capabilities for environmental purification. Herein, a noval 1T-2H MoS 2 QDs/Y-NaBi(MoO 4 ) 2 multiple heterostructures with two types S-scheme heterojunctions was formed by multi-functional materials NaBi(MoO 4 ) 2 with Y 3+ ion-doping and multi-phase state (1T, 2H and 1T-2H) MoS 2 quantum dots multi-interface polarization engineering. Material characterization and DFT calculations revealed that 1T-2H MoS 2 QDs/Y-NaBi(MoO 4 ) 2 multiple heterostructures produce highly-efficient Bi-S-Mo(IV) and Mo(IV)-S-Mo(VI) charge-transfer channels induced by multi-interface polarization engineering. 1T-2H MoS 2 QDs/Y-NaBi(MoO 4 ) 2 heterostructures were developed as photoanodes using the pressed tablet stainless-steel mesh (PT-SSM) method, and demonstrated conspicuous piezoelectric-photoelectrocatalytic (PZ-PEC) efficiency (99.88% removal within 40 min) for the degradation of organic pollutant phosphodiesterase-5 inhibitor (PDE-5i) under visible light illumination, direct-current external bias and mechanical force. This work provides new insight for synergy and mechanism between piezoelectric effect and photoelectrocatalysis for environmental clean-up.
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高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2023
·
IF 3.8
Xin Yan,Na Zhang,Zhiliang Liu,Chunfang Du
In this paper, 1T/2H mixed-phase MoS 2 /g-C 3 N 4 composites (1T/2H-MG) were successfully synthesized by a simple two-step calcination method and used for Cr(VI) removal from aqueous environment. A series of characterization methods were used to characterize the microstructure and surface morphology of the prepared materials. The experiment results showed that 1T/2H-MG (1:12) composite with good pH and temperature adaptability could completely remove Cr(VI) (100 mg∙L –1 ) within 50 min and showed an excellent adsorption capacity of 342.06 mg∙g –1 . The presence of abundant sulfur defects in 1T/2H-MG composite could provide more adsorption and reduction active sites, which was the main reason for the enhanced removal efficiency of 1T/2H-MG in comparison with pure MoS 2 and g-C 3 N 4 . This work not only contributes an excellent adsorbent for the wastewater treatment, but also provides evidences for the defects engineering.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 47
·期 27
·12670-12677
·
IF 3.3
Weiwen Cao,Xuanyu Yang,Weiji Dai,Bing Wu,Yudong Zhang,Cuijiao Zhao,Yanwei Sui,Saifang Huang
Efficient and robust electrocatalysts towards the oxygen evolution reaction (OER) are highly desirable in electrochemical systems for applications including water splitting and metal-air batteries. Herein, we report the preparation of an amorphous FeCoNiMnCr high-entropy alloy (HEA) on the surface of flower-like 2H-MoS2 (FeCoNiMnCr@MoS2) as a highly efficient electrocatalyst for the OER. The flower-like 2H-MoS2 is prepared on the flexible conductive carbon cloth (MoS2-CC) via a hydrothermal method, and subsequently the amorphous FeCoNiMnCr HEA is loaded on the surface of 2H-MoS2via an electrodeposition method to form FeCoNiMnCr@MoS2-CC electrocatalysts. Owing to the unique microstructure of 2H-MoS2 and abundant active sites of FeCoNiMnCr HEA, the FeCoNiMnCr@MoS2-CC electrocatalysts exhibit significantly improved OER electrocatalytic performances with a low overpotential of 210 mV at a current density of 10 mA cm−2 and a small Tafel slope of 40.3 mV dec−1 in 1.0 M KOH solution. Moreover, it shows excellent stability for OER electrocatalysis with the potential barely increased for at least 50 h. This work sheds light on the development of highly efficient OER electrocatalysts based on HEAs.
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