JOURNAL OF ALLOYS AND COMPOUNDS
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2025
·
IF 6.3
Chenggong Lu,Wanzhi Cao,Zhiqiang Wei,Zhiming Li
An efficient ZnFe 2 O 4 /ZnWO 4 photocatalyst based on Cu-MOF was prepared for the photo-Fenton-degradation of tetracycline under visible light. The microstructure as well as photoelectrochemical properties were qualitatively and quantitatively analyzed using XRD, SEM, TEM, XPS, PL, EIS and other characterization means, and the photodegradation mechanism was explored. The results showed that the rod-shaped ZnWO 4 was combined with spherical ZnFe 2 O 4 encapsulated on MOF, and the catalyst exhibited excellent light absorption, bulk phase separation and interfacial separation of photogenerated charges, resulting in excellent photo-Fenton-removal performance of tetracycline (TC). Among them, the ZnFe 2 O 4 /30 %ZnWO 4 /10 %Cu-MOF photo-Fenton degradation was the best, with more than 99 % degradation of TC within 60 min under simulated visible light. In addition, ZFO@ZWO@MOF has good photostability and reusability, and can be used to photo-Fenton degrade TC by a convenient magnetic recycling method. The radical capture experiments and electron spin resonance experiments fully proved that the main active substances for degrading TC are ·O 2 - and ·OH. This study provides an opportunity to construct type II heterojunction photocatalysts with high efficiency and convenient recycling, and offers new perspectives and insights into the purification mechanism of pollutants.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Yao Chen,Zhenyuan Ji,Jiabiao Lian,Hu Zhou,Xiaoping Shen,Lirong Kong,Aihua Yuan
Zinc tungstate (ZnWO 4 ) shows great promise as an anode material for lithium-ion batteries (LIBs) owing to its reversible multi-electron redox reactions and high theoretical capacity. Nevertheless, the low conductivity and big strain during cycling can lead to the inferior electrochemical properties of the ZnWO 4 anode, hindering its practical application. Herein, we report a novel composite with ZnWO 4 /ZnO porous nanoplates in-situ constructed on reduced graphene oxide (rGO) by a metal–organic framework template strategy. The nanoplates with good porosity are composed of nanoparticles and nanorods, providing a short Li + -diffusion distance and plentiful Li + storage active sites. The introduction of rGO can accelerate charge transfer and reinforce structural stability. As a result of these advantages, the ZnWO 4 /ZnO/rGO composite as LIBs anode delivers a high reversible capacity of 811 mAh g after 100 cycles at 200 mA g −1 , excellent rate capability (437 mAh g at 5000 mA g −1 ), and good long cycling stability (485 mAh g after 500 cycles at 2000 mA g −1 ). Notably, the rate capability of the composite far precedes the previously reported ZnWO 4 -based anodes. This work provides an efficient approach for designing and fabricating advanced metal tungstate-based anodes for high-performance LIBs .
研究领域:
材料科学
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能源存储
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纳米技术
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电化学
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MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Mingcai Yao,Guang Luo,Yifan Ran,Chenyang Li,Liang Dong
A chloramphenicol (CAP) electrochemical sensor based on zinc tungstate and magnetic hematite (ZnWO 4 /γ-Fe 2 O 3 ) magnetic molecularly imprinted polymer (ZnWO 4 /γ-Fe 2 O 3 /MIP) is proposed. First, ZnWO 4 , γ-Fe 2 O 3 nanomaterials were synthesized by one-step hydrothermal method, and then ZnWO 4 , magnetic nanoparticles were combined with molecularly imprinted polymers, that is, ZnWO 4 /γ-Fe 2 O 3 was coated with a molecularly imprinted (MIP) shells by precipitation polymerization method to prepare magnetic molecularly imprinted nanomaterials, and then modified on glassy carbon electrodes to construct an electrochemical sensor for the determining of CAP. The results show that under the optimal conditions, the ZnWO 4 /γ-Fe 2 O 3 /MIP (MMIP) modified electrode has a stronger CAP detection reduction peak current than the one-component electrode, and exhibits better electrocatalytic activity, which is an excellent electrochemically modified electrode. Compared to magnetic non-molecular imprint sensors (MNIP), MMIP sensors have higher detection efficiency. The linear range of ZnWO 4 /γ-Fe 2 O 3 /MIP/GCE for the detection of CAP was 0.12 ∼ 1224 μM, and the detection limit was 0.034 μM, showing excellent stability and reproducibility, and good selectivity in the presence of different interferences. ZnWO 4 /γ-Fe 2 O 3 /MIP/GCE was applied to the detection of CAP in milk samples with satisfactory results.
研究领域:
分析化学
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电化学
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纳米技术
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环境科学
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食品科学
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2015
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IF 2.353
Ke Wang,Wenlin Feng,Xu Feng,Yao Li,Peng Mi,Shasha Shi
Zn 0.997 WO 4 : Pr 3 + 0.003 and different concentrations (0.1 mol% to 0.9 mol%) of Pr, Li co-doped ZnWO 4 red phosphors were prepared by means of solid-state reaction process. The crystalline, surface morphology and luminescent properties of Zn 0.997 WO 4 : Pr 3 + 0.003 and Zn 1 − x − y WO 4 : x Pr 3 + , y Li + phosphors were investigated by the X-ray diffraction patterns (XRD), scanning electron microscope (SEM) and fluorescent measurements. From powder XRD analysis, the formation of monoclinic structure with C 2 / h point-group symmetry and P 2 / c space group of the as-synthesized samples is confirmed. The SEM image showed that surface morphology of the phosphor powder is irregular cylindricality. The luminescent spectra are dominated by the red emission peaks at 607, 621 and 643 nm, respectively, radiated from the 1 D 2 → 3 H 4 , 3 P 0 → 3 H 6 and 3 P 0 → 3 F 2 transitions of Pr 3 + ions. The concentrations of the highest luminescent intensity is determined at 0.3 mol% Pr 3 + and 0.3 mol% Li co-doped ZnWO 4 powder crystal, and the peak intensity is improved more than 3 times in comparison with that of 0.3 mol% Pr 3 + single-doped ZnWO 4 . The enhanced luminescence comes from the improved crystalline and from the charge compensation of Li + ions. The decay curve and CIE chromaticity coordinates of as-prepared samples are also studied in detail.
研究领域:
材料科学
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发光材料
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固态化学
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光学材料
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荧光粉技术
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高影响因子
ACS Applied Nano Materials
·
2023
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IF 5.9
Duo Sun,QiLin Wang,Wei Wang,Yu Chen,Shengping Ruan
The directional modulation of metal oxide semiconductors (MOSs) can be effective in developing high-performance gas-sensing materials. Herein, we propose an efficient strategy by modifying ZnWO4 on In2O3 to achieve controllable modulation of oxygen vacancies and energy band structures in ZnWO4/In2O3 heterostructures. The sensor based on optimized ZnWO4/In2O3 exhibits significantly enhanced performance to detect triethylamine, including a lower operating temperature (100 °C), a higher responsivity (Ra/Rg = 221.2 for 100 ppm), and a lower detection limit (500 ppb). In addition, the fabricated sensor exhibits faster response and good selectivity. The improved gas-sensing performance could be attributed to the acid–base interaction between triethylamine gas and ZnWO4, the formation of heterojunctions, and the increase of oxygen vacancies to achieve a synergistic modulation of the chemical and energy band structures. It is anticipated that our current investigation could offer insights and a useful strategy for triethylamine detection.
研究领域:
材料科学
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化学传感器
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纳米技术
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高影响因子
DALTON TRANSACTIONS
·
2024
·Vol. 53
·期 37
·15648-15659
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IF 3.5
Song-Lin Xu,Shi-Rong Wang,Dongmei Ma,Rui-Yu Li,Jun Xiang,Rong-Da Zhao,Fu-Fa Wu
ZnWO4@NiCo2O4 core–shell nanosheet array composites are synthesized on nickel foam via a two-step hydrothermal method. The optimal conditions, including a Ni(NO3)2·6H2O to Co(NO3)2·6H2O molar ratio of 2 : 1, 12 hours reaction time, and 120 °C temperature, yield a specific capacitance of 875 C g−1 at 1 A g−1. The electrode also maintains 81.1% capacitance after 10 000 cycles. The material's performance is attributed to its core–shell structure, which enhances ion diffusion and electron transport. This study presents a viable approach for high-performance supercapacitor electrodes.
研究领域:
材料科学
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能源存储与转换
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DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Hongbo He,Zhuangzhu Luo,Zhen-Yu Tang,Changlin Yu
Structure controlled ZnWO 4 nanomaterials were fabricated by a facile hydrothermal reaction . The nanorod-like ZnWO 4 with exposed (111) facets exhibits significant promoting effect for Cr 6+ reduction than that of noncrystalline ZnWO 4 nanoparticles . Specifically, the photocatalytic performance of ZnWO 4 -T14 for Cr 6+ reduction is 9.8 times higher than that of ZnWO 4 -T0. The effect of Zn 2+ on the concentration-absorbance (C-A) curve of K 2 Cr 2 O 7 solution was evaluated and investigated systemically, and adding Zn 2+ can improve the UV–vis spectrum detection sensitivity of K 2 Cr 2 O 7 solution. Methylene blue (MB) as a photosensitizer to enhance the photocatalytic activity of ZnWO 4 for Cr 6+ reduction is reported for the first time. In particular, the photocatalytic activity of ZnWO 4 -T14 for Cr 6+ reduction is 96.7% in 10 mg/L MB solution, which is 65.1% higher than that in aqueous solution. Moreover, the ZnWO 4 -T14/MB possesses excellent stability, and the reduction rate of Cr 6+ remains above 90% after four cycles. We believe that the photosensitized strategy is a promising methodology in the treatment of heavy metal ion due to its superior photocatalytic activity and stability.
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ChemistrySelect
·
2025
·Vol. 10
·期 36
·e03895
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IF 2
Guiquan Wei,Fan Dong,Ziwen Yuan,Daolin Zhou,Chenglong Liu,Haohao Wan,Mingxin Jin,Min Shao,Yushan Wan
BiOIO 3 /ZnWO 4 heterostructures were constructed using a simple hydrothermal synthesis method. The optimal composite ratio of catalytic materials was determined through photodegradation tests, and the best nanocomposite BiOIO 3 /ZnWO 4 heterostructure was obtained by varying experimental conditions such as the pH of the water and the concentration of pollutants. The optimal composite demonstrated good photocatalytic activity in all environments when TC was removed. The experimental results showed the finest sample, BOI/ZW-7, offers a lot of active sites for photocatalytic reactions because of its porous nature and big specific surface area. This composite exhibited excellent TC degradation across four different water bodies: deionised water, tap water, lake water, and rainwater, under simulated solar radiation. BOI/ZW-7's large surface area and porous structure enable abundant photocatalytic activity; under simulated sunlight, ≥60% TC removal (20 mg L −1 ) was reached within 100 min in deionized, tap, lake, and rain water. In summary, the constructed BiOIO 3 /ZnWO 4 heterojunction follows the conventional type II charge transfer mode, with h⁺ playing a major role in the photodegradation process. Under this feasible charge transfer pathway, the efficient degradation of TC in aqueous solution was ultimately achieved through effective carrier separation. Graphical This study employs a simple hydrothermal synthesis method to prepare a highly efficient photocatalyst based on a type-II heterojunction of BiOIO 3 /ZnWO 4 . ZnWO 4 nanorods are loaded onto the surface of BiOIO 3 nanosheets, forming a heterojunction to enhance the photocatalytic activity of the material.
研究领域:
材料科学
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环境催化
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纳米技术
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光催化
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水处理
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高影响因子
JOURNAL OF THERMAL SPRAY TECHNOLOGY
·
2024
·Vol. 33
·期 5
·1694-1708
·
IF 3.2
Zhang Lu-lu,Ma Wen-chao,Liu Yan-cai,Cao Hong-wei,An Ya-qiong,Huang Hai-fan,Zhang Hao-lin,Qiao Jiang-hao,Li Xiao-wei,Liu Hong-tao
In this paper, as-received Zn powder and as-prepared Zn@(ZnWO 4 /ZnO) core–shell powder were used as feedstocks for plasma spraying to prepare Zn-based composite coatings and nano-ZnO was co-deposited by chemical vapor deposition induced by plasma spraying. The composition and morphology were controllable within certain range by plasma spraying power. The photocatalytic activities of the coatings were analyzed by the degradation efficiency of methyl orange (MO) solution. It was found the photocatalytic activity can be improved with ZnWO 4 decoration. The Zn/ZnO/ZnWO 4 coating which presented tremella-like surface morphology was testified to have the best photocatalytic activity under UV light irradiation among all coatings. On the other hand, the chemical surface modification with 1H,1H,1H,2H-perfluorodecyltriethoxysilane (FAS-17) was implemented to produce superhydrophobic coatings. Among all modified coatings, the ZnWO 4 -containing coating with tremella-like surface structure presented the best superhydrophobicity. By the cyclic wetting and tape adhesion experiments, the tremella-like structure was proved to make a great improvement on the robustness of the Zn-based superhydrophobic coatings. The superhydrophobic and photocatalytic properties provide the possibility for the application of the coating in the fields of antifouling, antibacterial, and photocatalytic degradation of organics. Graphical Abstract
研究领域:
材料科学
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环境科学
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高影响因子
ACS Sensors
·
2026
·
IF 10.9
Xiaoqian Sun,Qian Zheng,Linzi Huang,Kunxiang Deng,Xiaoxiang Li,Xinyi Li,Yixi Xie,Pengcheng Zhao,Junjie Fei
Chlorogenic acid (CA) is a phenolic acid compound with broad biological activity. In this study, a high-performance photoelectrochemical sensor based on in situ grown ZnIn2S4@ZnWO4 heterojunctions was developed for the sensitive detection of CA. ZnWO4 nanocrystals were successfully grown on the surface of flower-like ZnIn2S4 through a one-step hydrothermal method, resulting in a tightly coupled heterojunction structure that effectively promoted photo-induced charge separation and enhanced photocurrent response. Experimental results demonstrated that the sensor exhibited excellent analytical performance for CA, with a good linear relationship within a concentration range of 20–800 nM, a detection limit as low as 5 nM (S/N = 3), and high selectivity, stability, and reproducibility. Density functional theory (DFT) calculations revealed the charge transfer mechanism at the heterojunction interface and the interaction between CA and the material surface. Practical sample analysis showed that the sensor was successfully applied to accurately determine CA content in coffee, eucommia ulmoides oliver and lonicera japonica thunb, with recovery rates ranging from 97.08 to 103.56%. This study provides a new method for CA detection and offers fresh insights into the design of efficient photoelectrochemical sensors.
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DOI
PubMed
高影响因子
Food Analytical Methods
·
2026
·Vol. 19
·期 10
·303
·
IF 3
Tu Xiaodong,Yao Mingcai,Dong Liang
A chloramphenicol (CAP) electrochemical sensor based on zinc tungstate and maghemite nanocomposites (ZnWO 4 /γ-Fe 2 O 3 ) is proposed. First, ZnWO 4 and γ-Fe 2 O 3 nanomaterials were synthesized using a hydrothermal synthesis method, then compositely modified onto glassy carbon electrodes to construct electrochemical sensors for measuring CAP. Under optimal conditions, the ZnWO 4 /γ-Fe 2 O 3 -modified electrode exhibits a stronger reduction peak current for CAP detection than the single-component electrode and demonstrates better electrocatalytic activity. The results demonstrate that ZnWO 4 /γ-Fe 2 O 3 /GCE exhibits a linear detection range of 8–1000 μM and a detection limit of 1.04 μM, demonstrating good selectivity in the presence of different interferers, as well as outstanding stability and reproducibility. ZnWO 4 /γ-Fe 2 O 3 /GCE was used to detect of CAP in milk samples, yielding satisfactory results.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2026
·
IF 9.2
Xuyu Shen,Jie Wei,Long Yang,Youxin Yuanfeng,Zehao Sun,Shuyou Li,Bing Chen,Guogang Chen
Novel S-scheme ZnWO 4 /Zn 3 In 2 S 6 heterojunction photocatalysts were designed and constructed herein by a facile two-step hydrothermal method to enhance photocatalytic performance for hydrogen evolution. The experimental results and analysis demonstrated that the heterojunction structure effectively promotes separation of photogenerated electron-hole pairs, suppresses charge carrier recombination and retains charge carriers with high redox capacity participating in the catalytic reaction, thereby significantly improving the photocatalytic activity. For instance, 0.2ZnWO 4 /Zn 3 In 2 S 6 (0.2ZW/ZIS) heterojunction photocatalyst achieved the highest hydrogen evolution rate of 42.66 mmol g −1 h −1 under visible-light irradiation, which is approximately 7.28 times that of pure Zn 3 In 2 S 6 . Both X-ray photoelectron spectroscopy and photoluminescence spectroscopy analysis confirmed that strong interfacial interactions exist between ZnWO 4 and Zn 3 In 2 S 6 , following an S-scheme charge transfer mechanism rather than the conventional Type-II heterojunction pathway. It is believed that this study provides new insights for developing efficient, stable, and noble-metal-free S-scheme heterojunction photocatalysts towards hydrogen evolution.
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