MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
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2022
·
IF 4.644
Muhammad Khalid Hussain,N.R. Khalid,M.B. Tahir,Muhammad Tanveer,Tahir Iqbal,Maira Liaqat
A novel ternary ZnO/CuO/MoO 3 (ZnO/CuO/M) heterojunction photocatalysts with the nanorods morphology was synthesized by facile hydrothermal treatment . The surface morphology as nanorods, optical properties , photogenerated separation/transfer of charge carriers and photocatalytic properties were characterized for all developed photocatalysts. The photodegradation of organic pollutants including rhodamine B (RhB) and alizarin yellow (AY) dyes was studied under the visible light irradiance. The ternary ZnO/CuO/M nanorods revealed improved photocatalytic performance than pristine ZnO, CuO, MoO 3 and binary CuO/M composite. Amongst all ternary ZnO/CuO/M photocatalysts displayed the best photocatalytic activity for RhB (97%) and AY (79%) dyes within 120 min, which is 57 times and 64 times higher than that of pristine MoO 3 . Reactive trapping experiments were also executed qualitatively to perceive the characters of different active species for both dyes degradation. The improved photocatalytic presentation could be credited to the development of the ZnO/CuO/M heterojunction photocatalysts, which is advantageous for efficient fast transfer and separation of the photoexcited charge carriers.
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高影响因子
APPLIED SURFACE SCIENCE
·
2020
·
IF 6.182
Zulfiqar Ali,Yang-wen Wu,Yue Wu,Zulqarnain Arain,Ming-xin Xu,Qiang Lu,Heping Ma,Huan-yu Zhao
Lead (Pb) species are inescapable constituents of the flue gas from coal-fired power plants and other thermal devices, which can cause impeding effects on the selective catalytic reduction (SCR) reactions. Here, the poisoning effects of Pb on the V 2 O 5 -MoO 3 /TiO 2 type SCR catalyst were examined. The poisoned catalysts were prepared by the solid diffusion and incipient wetness impregnation (IWI) methods. The catalytic activity tests indicated that the Pb-doped catalyst prepared by the IWI method suffered a considerable drop in catalytic activity, while a slender influence was observed on the Pb-loaded catalysts prepared by solid diffusion method. Comprehensive characterizations and density functional theory (DFT) calculations were performed on the fresh and poisoned catalysts prepared by the IWI method to unveil the deactivation mechanism. The results showed that Pb species covered the active sites (V species) on the catalyst surface, resulted in the decrease in chemisorbed oxygen, hence reducing the surface acidities. The decrease in reducibility of the catalyst was an important factor for poisoning of the catalyst. Moreover, Pb species reacted with MoO 3 to form PbMoO 4 which agglomerated on the catalyst surface to further deactivate the catalyst.
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高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Yanbing Zhu,Hao Xiu,Gang Xue,Tianyong Lei,Yu Wang,Zhongfang Li,Shuren Cong,Tingting Wei
The piezoelectric properties are closely related to the properties of photocatalytic membrane in water environment. Here, a self-polarized g-C 3 N 4 /MoO 3 /PVDF-TrFE membrane with high piezoelectricity was synthesized using a facile spin-coating strategy. In the presence of a low-speed water flow, a stabilized photocatalytic hydrogen evolution rate (538.8 µmol g -1 h −1 ) was obtained for the g-C 3 N 4 /MoO 3 /PVDF-TrFE membrane. Experimental results revealed that the g-C 3 N 4 /MoO 3 induced a reorganization of PVDF-TrFE structure and thereby enlarged the polarization electric field to promote the directional migration of charge carriers and exciton dissociation. Additionally, pressure current test demonstrated that under the same pressure conditions, g-C 3 N 4 /MoO 3 /PVDF-TrFE exhibited a higher response than PVDF-TrFE. This work establishes a new method for the polarization electric field and provides a deeper understanding of the hydrogen evolution mechanism.
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高影响因子
JOURNAL OF SEPARATION SCIENCE
·
2015
·Vol. 38
·期 8
·1388-1393
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IF 2.737
Yunjian Ma,Cheng Zhao,Yisen Zhan,Jianbin Li,Zhuomin Zhang,Gongke Li
An in situ embedded synthesis strategy was developed for the preparation of a MoO 3 /polypyrrole intercalative sampling adsorbent for the separation and analysis of trace volatile formaldehyde in aquatic products. Structural and morphological characteristics of the MoO 3 /polypyrrole intercalative adsorbent were investigated by a series of characterization methods. The MoO 3 /polypyrrole sampling adsorbent possessed a higher sampling capacity and selectivity for polar formaldehyde than commonly used commercial adsorbent Tenax TA. Finally, the MoO 3 /polypyrrole adsorbent was packed in the thermal desorption tube that was directly coupled to gas chromatography with mass spectrometry for the analysis of trace volatile formaldehyde in aquatic products. Trace volatile formaldehyde from real aquatic products could be selectively sampled and quantified to be 0.43–6.6 mg/kg. The detection limit was achieved as 0.004 μg/L by this method. Good recoveries for spiked aquatic products were achieved in range of 75.0–108% with relative standard deviations of 1.2–9.0%.
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PubMed
高影响因子
OPTICAL MATERIALS
·
2024
·
IF 3.8
Muhammad Khalid Hussain,N.R. Khalid,Muhammad Tanveer,Amir Abbas,Furqan Ali,Warda Hassan,Martha Rianna,Sultana Rahman,Muhammad Hamza,Muhammad Aslam
x ZnO- (1-x) MoO 3 (x = 0.0,0.1,0.3,0.5,0.7) nanocomposite materials have been efficiently fabricated by the facile hydrothermal method to enhance the photocatalytic activities for the environmental applications. The fabricated samples were characterized via XRD , SEM, EDX , XPS, UV–Visible spectroscopy, PL and FTIR analysis. The 5% ZnO-M nanocomposite material exhibits reduced band gab energy and superior photocatalytic activity for rhodamine B (RhB) and alizarin yellow (AY) dyes degradation of 94% and 81% within 120 min under visible light irradiance. Our reported study reveals that the 5% ZnO-M photocatalyst is extremely stable and reusable for more than five reaction of cycles. The photocatalytic enactment of the 5% ZnO-M composite was mostly endorsed due to Z-scheme photocatalysts, higher visible light adsorption on the surface morphology , improved charge separation/transfer, and decreased recombination rate. This study may provide new ideas for developing effective, innovative Z-scheme heterojunction photocatalysts and encouraging their extensive application for the degradation of dyes from wastewater.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Jie Ren,Yuan Yu,Yanning Qu,Dongfeng Sun,Wenhui Chu,Qingmei Su,Linyin Huang,Bingshe Xu
Z-scheme photocatalyst was researched in recent years due to its bionic electron transfer structure, while there were still challenges on amount of electron-hole pairs and preservation of redox ability in above systems. In this work, a new dual Z-scheme MoO 3 /ZnIn 2 S 4 /black phosphorus quantum dots (MZBP) heterojunction was constructed to solve above problems and employed for photocatalytic hydrogen (H 2 ) evolution. According to the results, the H 2 generation efficiency of MZBP reached to 5.45 mmol/g/h under visible light irradiation, which were 10 and 1.6 times higher than that of pure ZnIn 2 S 4 and MoO 3 /ZnIn 2 S 4 (MZ) material, respectively. The apparent quantum yield (AQY) of MZBP was calculated as 13.2% at 420 nm, indicating its high energy conversion property. In general, the enhanced separation ability of photo-induced carriers and large redox surfaces of dual Z-scheme MZBP system played important roles for enhancement of H 2 evolution. According to the high-efficiency H 2 evolution performance and significant dual Z-scheme mechanism, the novel heterojunction was promising for more applications in photoelectric fields.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Yuanhao Ouyang,Honghui Jiang,Haoxiang Zhong,Guoyu Li,Xiaodong Ji,Qi Jin,Wei Xue,Xinjiang Hu,Mingshan Zhu
Algal blooms have resulted in the buildup of microcystin (MC-LR) in water bodies, posing a severe hazard to the safety of the aquatic ecosystem and human health. This study produced a g-C 3 N 4 with N 2C -type defects/MoO 3 Z-scheme photocatalyst (D-CN/MoO 3 ) for MC-LR degradation in visible light. D-CN/MoO 3 could photodegrade 100 % MC-LR within 25 min, which was substantially more significant than pure g-C 3 N 4 (12.5%). Meanwhile, the kinetic constant was 32.5 times higher than pure g-C 3 N 4 , attributed to the defect engineering and Z-scheme heterojunction cooperative interaction. Based on the LC-MS results, the vital degradation mechanism is the selective assault of 1 O 2 on the Adda side chain of MC-LR and the following decarboxylation reaction of h + , which leads to effective mineralization and reduced toxicity of MC-LR. Moreover, the excellent stability and adaptability of D-CN/MoO 3 are verified and have a significant potential for application in the decontamination of MC-LR in eutrophic water.
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高影响因子
Nano Research
·
2024
·Vol. 17
·期 7
·6376-6385
·
IF 9.5
Cao Fangjun,Feng Hui,Yao Jiaxin,Hou Xiang,Jin Tiezhi,Hui Junfeng
The continuous inflammatory response in diabetic skin wounds leads to excessive production of reactive oxygen species, which cause a vicious circle of long-term inflammation. In the therapeutic research of metal nanoenzymes for healing diabetic ulcers, it still faces the challenges in poor nanoenzymes activity and low-efficient therapeutic efficiency. Herein, ultrasmall oxygen-deficient MoO 3− X quantum dots were fabricated and employed as nanoenzymes for healing fiabetic ulcers. After PEGylation, PEGylated MoO 3− X quantum dots (MoO 3− X /PEG) with oxygen vacancies exhibits excellent photothermal, peroxidase/catalase-like activities. In addition, these MoO 3− X /PEG showed superior properties in scavenging H 2 O 2 and effectively inhibiting the scavenging of reactive oxygen species. More importantly, such an oxygen-defected MoO 3− X /PEG had obvious antibacterial and skin repairing effects on alleviating hypoxia and excessive oxidative stress even in a mouse model of diabetic ulcers, inhibiting proinflammatory cytokines and significantly accelerating the healing of infected wounds, which shows great application potential for promoting wound healing. This work highlights that the developed oxygen defected molybdenum oxide compounds capable of peroxidase-like and catalase-like activities show great application potential for healing diabetes wound.
研究领域:
纳米技术
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酶模拟物
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糖尿病研究
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伤口愈合
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材料科学
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高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Xu Wang,Kang Guo,Yongyao Xia,Yulin Min,Qunjie Xu
The performance of lithium batteries is largely dependent on the ionic conductivity within robust solid electrolytes. Poly(ethylene oxide) (PEO)-based electrolytes, however, have a low lithium ionic conductivity, which limits the hop of Li+. Herein, a novel PEO-based composite electrolyte is prepared that contains nonstoichiometric transition molybdenum trioxide (MoO3–x) nanosheets as fillers to improve the ionic conductivity. The MoO3–x nanosheets containing many oxygen vacancies can cross-link with PEO chains to reduce the energy barrier of Li+ migration and the matrix crystallinity, leading to an increase in the lithium-ion transference number (up to 0.56) and a high ionic conductivity (up to 6 × 10–4 S cm–1) at 60 °C. Meanwhile, the incorporation of MoO3–x nanosheets alleviates the decomposition of the electrolyte, enhancing the tensile strength by ∼4 times compared to PEO. As a result, a LiFePO4/Li cell with PEO/LiTFSI/MoO3–x (PLM3–x) delivers an excellent rate capability, high capacity, and lifespan during high rates (2 C, ≥10 000 cycles), which demonstrates a facile yet effective strategy toward high-performance lithium batteries.
研究领域:
材料科学
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电化学
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储能技术
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固态电池技术
·
纳米材料
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高影响因子
MICROCHIMICA ACTA
·
2024
·Vol. 191
·期 7
·1-13
·
IF 5.3
Wang Yuefan,Chen Yinzhi,Zhou Yuhe,Wang Yilin,Wu Yingjie,Xie Yixi,Zhao Pengcheng,Hu Xiayi,Fei Junjie
Rutin extracted from natural plants has important medical value, so developing accurate and sensitive quantitative detection methods is one of the most important tasks. In this work, HKUST-1@GN/MoO 3 -Ppy NWs were utilized to develop a high-performance rutin electrochemical sensor in virtue of its high conductivity and electrocatalytic activity. The morphology, crystal structure, and chemical element composition of the fabricated sensor composites were characterized by SEM, TEM, XPS, and XRD. Electrochemical techniques including EIS, CV, and DPV were used to investigate the electrocatalytic properties of the prepared materials. The electrochemical test conditions were optimized to achieve efficient detection of rutin. The 2-electron 2-proton mechanism, consisting of several rapid and sequential phases, is postulated to occur during rutin oxidation. The results show that HKUST-1@GN/MoO 3 -Ppy NWs have the characteristics of large specific surface area, excellent conductivity, and outstanding electrocatalytic ability. There is a significant linear relationship between rutin concentration and the oxidation peak current of DPV. The linear range is 0.50–2000 nM, and the limit of detection is 0.27 nM (S/N = 3). In addition, the prepared electrode has been confirmed to be useful for rutin analysis in orange juice. Graphical Abstract
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Ya-Ya Yang,Hao-Peng Feng,Xue-Gang Zhang,Hai Guo,Xiao-Ju Wen,Long Sui,Zheng-Tao Dong,Ming Yan,Cheng-Gang Niu
Water pollution caused by organic pollutants and water-borne pathogens has posed a serious threat to human health. Herein, a fully encapsulated core–shell MoO 3-x @Zn 2 In 2 S 5 S-scheme heterojunction was constructed for efficient removal of ciprofloxacin (CIP) and disinfection of antibiotic-resistant bacteria (TC- E. coli ). The excellent catalytic performance is attributed to the synergistic advantages of optimized oxygen defect concentration, the protection of oxygen vacancy and enhanced photogenerated carrier separation efficiency. The MO@ZIS-15 with optimum defect density can remove 92.6 % of CIP in 120 min and inactivate 7.7 log TC- E. coli in 75 min. Furthermore, the developed MO@ZIS-15 system has excellent anti-anion and organic matter interference ability, and also exhibit good utilization potentiality in practical water. Combining theoretical calculations and liquid chromatography-mass spectrometry (LC-MS), the structure–function correlation between different CIP active sites and degradation pathway are revealed. Toxicity prediction and cytotoxicity experiments demonstrated that photocatalytic treatment can effectively reduce the ecotoxicity of degradation products. This work provideds a novel vision to design high-efficiency plasma-based photocatalysts for the removal of organic contaminants and disinfection of antibiotic-resistant bacteria.
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高影响因子
ADVANCED MATERIALS
·
2019
·Vol. 31
·期 16
·1900763
·
IF 25.809
Yuanhong Gao,Ya Yi,Xinwei Wang,Hong Meng,Dangyuan Lei,Xue-Feng Yu,Paul K. Chu,Jia Li
The interfacial charge effect is crucial for high-sensitivity organic phototransistors (OPTs), but conventional layered and hybrid OPTs have a trade-off in balancing the separation, transport, and recombination of photogenerated charges, consequently impacting the device performance. Herein, a novel hybrid-layered phototransistor (HL-OPT) is reported with significantly improved photodetection performance, which takes advantages of both the charge-trapping effect (CTE) and efficient carrier transport. The HL-OPT consisting of 2,7-dioctyl[1]benzothieno[3,2-b][1]benzothiophene (C8-BTBT) as conduction channel, C8-BTBT:[6,6]-phenyl-C 61 -butyric acid methyl ester (PC 61 BM) bulk heterojunction as photoactive layer, and sandwiched MoO 3 interlayer as a charge-transport interlayer exhibits outstanding photodetection characteristics such as a photosensitivity ( I light / I dark ) of 2.9 × 10 6 , photoresponsivity ( R ) of 8.6 × 10 3 A W −1 , detectivity ( D* ) of 3.4 × 10 14 Jones, and external quantum efficiency of 3 × 10 6 % under weak light illumination of 32 µW cm −2 . The mechanism and strategy described here provide new insights into the design and optimization of high-performance OPTs spanning the ultraviolet and near infrared (NIR) range as well as fundamental issues pertaining to the electronic and photonic properties of the devices.
研究领域:
光电子学
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有机电子学
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光电探测器
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材料科学
·
纳米技术
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高影响因子
危险品化学品经营许可证（带存储）