CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Xiaoyou Cui,Xinnan Kang,Chuhan Zhang,Yanan Gao,Yajie Wang,Bin Liu
To address the critical bottlenecks of low carrier separation efficiency and insufficient redox potential in nitrogen-rich graphitic carbon nitride (g-C 3 N 5 ), this study developed an environmentally friendly MoO 3-x /CN composite material enriched with oxygen vacancies via a synergistic hydrothermal-calcination protocol. In photocatalytic degradation experiments, the MoO 3-x /CN-0.5 composite exhibited ultra-rapid degradation kinetics and broad-spectrum applicability, achieving degradation rates of 86.91 % for methyl orange (MO), 81.92 % for methylene blue (MB) and 97.11 % for rhodamine B (RhB) within 10 min, significantly outperforming other reported photocatalysts. Distinguishing from other photocatalysts, the exceptional photocatalytic degradation efficiency and broad-spectrum applicability of the MoO 3-x /CN-0.5 composite originate from three synergistic factors: enhanced visible-light absorption, a rationally designed Z-scheme heterojunction, and N-Mo bonds at the phase interface. These structural features synergistically enable efficient electron-hole pairs dissociation, improve the material's redox capability, and preserve structural integrity. This work provides a facile strategy for the controlled synthesis of g-C 3 N 5 -based heterojunctions and expands their application potential for highly efficient photocatalytic degradation.
研究领域:
材料科学
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环境科学
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光催化
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纳米技术
·
化学工程
✓ 已验证
产品关联
DOI
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.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2018
·Vol. 42
·期 23
·18533-18540
·
IF 3.201
Hongru Zu,Yanxian Guo,Haiyao Yang,Di Huang,Zhiming Liu,Yingliang Liu,Chaofan Hu
Oxygen deficient molybdenum oxide (MoO3−x) spurred intense scientific interest in biomedical research owing to the strong localized surface plasmon resonance (LSPR) effect in NIR region. Although a considerable number of methods have been used to prepare MoO3−x nanomaterials, most of them are limited by long reaction time, low yield and poor water solubility of the products. Herein, a novel ultraviolet irradiation method was developed to synthesize MoO3−x quantum dots (QDs) within 30 min, which rendered excellent water solubility and low cytotoxicity. The as-prepared MoO3−x QDs exhibited a relatively narrow size distribution with an average diameter of 5.63 nm, which was confirmed by transmission electron microscopy. Moreover, an intense LSPR effect in NIR regions was verified by UV-vis spectroscopy. Thus, the materials were used in photothermal ablation of cancer and glucose detection, showing high photothermal conversion efficiency and good sensitivity.
研究领域:
材料科学
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生物医学工程
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2020
·
IF 3.594
Candi Liu,Nan Zhang,Xin Huang,Qiwen Wang,Xiaohong Wang,Shengtian Wang
A novel two-dimensional ZnO-MoO 3 -C nanocomposite was synthesized by the green thermal calcination method with the biochar of mushroom derived carbon nanosheets and Zn 1.5 PMo 12 O 40 polyoxometallate. The nanocomposite was used to modify a glassy carbon electrode (GCE) for the first time to construct an acetaminophen (AP) electrochemical biosensor. Scanning electron microscopy (SEM), X-ray diffraction (XRD) and nitrogen adsorption/desorption isotherm (BET) results showed that the synthesized ZnO-MoO 3 -C nanocomposite has many layered nanostructure and a large surface area. Cyclic voltammetry (CV) and differential pulse voltammetry (DPV) indicated that ZnO-MoO 3 -C/GCE presented highly effective and accurate toward the oxidation of AP due to the stable molecular structure of the electrode surface. The DPV response of the proposed sensor exhibited selectively and sensitively determination for AP with a wider linear dependence on the concentration of AP from 2.5 to 2000 μM, and lower limits of detection (LOD) 1.14 μM, compared with other carbon-base material modified GCE and GCE electrodes. In addition, the proposed sensor was applied to detection of AP in real samples, and the recovery was the range from 94.7 to 101.0%, and RSD was less than 5%. It indicates that the proposed sensor has a hopeful capacity of extensive applications in bioanalysis and tablets.
研究领域:
材料科学
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分析化学
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生物医学工程
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Wen Liao,Fangxia Xie,Lulu Zhang,Qing Xi,Long Cao,Yawen Wang,Yunfang Wang,Houfen Li,Rui Li,Caimei Fan,Jianxin Liu,Jiancheng Wang
Photocatalytic water splitting for hydrogen evolution (PHE) is an effective and sustainable strategy to alleviate energy shortages and environmental issues. However, active hydrogen (H*), as a critical intermediate, has low generation and desorption rates that limit the development of PHE. Herein, a ZnCdS/MoO 3-x heterojunction is prepared by a two-step solvothermal method and applied to a photocatalytic hydrogen evolution reaction under visible light conditions. The band structure and electron spin resonance (ESR) confirm the formation of an S-scheme heterojunction in ZnCdS/MoO 3-x , promoting the utilization of photo-generated carriers and thereby enhancing H* generation on ZnCdS. Furthermore, in-situ ESR, quasi in-situ Raman spectroscopy and in-situ DRFTIRS spectroscopy demonstrate that the H* is subsequently transferred from ZnCdS to MoO 3-x via the hydrogen spillover effect. The H* is then confined within the lattice of MoO 3-x and forms H x MoO 3-x in situ. Finally, the electrochemical tests and DFT calculations demonstrate that the H x MoO 3-x acts as a “hydrogen pump”, lowering the H* desorption barriers and ultimately enhancing the hydrogen evolution of the system. Therefore, the optimum hydrogen evolution rate of ZnCdS/MoO 3-x reaches 7.9 mmol·g −1 ·h −1 , which is 26.3 times higher than that of pure ZnCdS, along with a hydrogen storage capacity of 0.36 wt%. This work offers a novel approach for achieving efficient and sustained PHE reactions by modulating the generation and desorption rates of the intermediate H*.
研究领域:
光催化
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材料科学
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能量转换
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环境科学
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物理化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2022
·
IF 9.224
Miaomiao Hu,Jiafeng Zhu,Wenyao Guo,Qunjie Xu,Yulin Min,Jinchen Fan
Photocatalytic water splitting to produce hydrogen is considered to be a promising approach to clean, sustainable, and renewable energy. The highly efficient photocatalysts play a key role in photocatalytic hydrogen production. Owing to its high charge carrier mobility and tunable band gap, black phosphorus (BP) has emerged as a potential photocatalyst. However, when using BP for photocatalytic hydrogen production individually, the inherent instability and light-harvesting capability greatly restricted the further application, as well as the fast photogenerated electron–hole recombination. Herein, a novel heterostructured photocatalyst BP-MoO3–x was prepared via the direct ball-milling method for H2 photogeneration. The result demonstrated that coupling BP with the localized surface plasmonic defective MoO3–x through covalent Mo–P bond improves the chemical stability, enables the visible-to-near infrared photons to harvest, and promotes the photogenerated carrier separation. As a result, the BP-MoO3–x could deliver high photocatalytic hydrogen production rates of 396.3 and 156.4 μmol·g–1·h–1 under visible and near-infrared lights, which are ∼40 and 80 times higher than that of BP without any sacrificial agent, respectively. Furthermore, the BP-MoO3–x also shows good stability under visible light irradiation from cycle stability testing. Combining with density functional theory (DFT) calculations, the synergistic effect of Z-scheme BP-MoO3–x heterostructure and strong localized surface plasmon resonance (LSPR) enhances light-harvesting capacity and improves the photoexcited charge transfer efficiency.
研究领域:
材料科学
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化学
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能源科学
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2021
·
IF 8.067
Zhuoran Hou,Di Yang,Yuntao Xin,Haoyu Huang,Xin Hu,Yuyang Guo,Siduo Wu,Liwen Hu
In order to solve the crisis of energy depletion and protect the beautiful natural environment, the development of efficient, cost-effective and stable hydrogen evolution reaction (HER) electrocatalyst has attracted great attention, but it is still an urgent challenge to fabricate an abundant and low cost electrocatalyst. In this article, a novel HER catalyst with heterogeneous structure interfaces was in situ synthesized by multi-step electrodeposition method, and the mechanism of the enhancement of its electrocatalytic activity was elucidated by the combination of density functional theory (DFT) calculation and multi-characterizations. The initial overpotential is only 83 mV and the Tafel slope is only 58.5 mV/dec, which is better than most of other reported CoP-based electrocatalyst. At the meantime, DFT calculations show that the incorporation of MoO 3 and rGO leads to electron redistribution among different components, which ensures efficient adsorption and activation of H 2 O molecules and hydrogen atoms. Therefore, this work will contribute to the understanding of the mechanisms associated with heterojunctions and provide guidance for the rational design of a hybrid catalyst.
研究领域:
材料科学
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电化学
·
催化
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能源材料
✓ 已验证
产品关联
DOI
高影响因子
Reaction Chemistry & Engineering
·
2023
·Vol. 9
·期 1
·70-81
·
IF 3.9
Yuxuan Shao,Dan You,Yuqi Wan,Qingrong Cheng,Zhiquan Pan
The activation capacity of molecular oxygen is an important indicator to evaluate the photocatalytic efficiency of a catalyst. In this paper, MoO3−x nanosheets with oxygen vacancies were deposited on WO3 nanoflowers to form a WOM heterojunction, which improved the photocatalytic performance and molecular oxygen activation ability of the catalyst. This novel WOM heterojunction exhibited excellent photoactivity for degrading rhodamine B (RhB), photocatalytic water splitting ability and molecular oxygen activation ability under sunlight irradiation. Among all the samples, WOM83% could degrade 98% of 30 ppm RhB in 40 min. Meanwhile, WOM83% exhibited the highest hydrogen generation rate (4214.2 μmol h−1 g−1) and the strongest TMB oxidation capacity, and can generate 2.23 μmol of ·O2− in 50 min. The enhanced photocatalytic performance via heterojunction construction may be attributed to these following reasons: (i) higher light absorption achieved by the MoO3−x and WO3 composite; (ii) the matched energy band gap of MoO3−x and WO3 led to higher photogenerated carrier mobility; (iii) MoO3−x with oxygen vacancies as electron traps suppressed the photogenerated carrier recombination; (iv) enhanced molecular oxygen activation ability of the WOM heterojunction, such as the production of ·O2−. The measurements for TMB photo-oxidation and ·O2− showed excellent molecular oxygen activation ability of WOM heterojunctions. Finally, a possible photocatalytic mechanism was proposed. This study provided a viable option for the application of materials with oxygen vacancies to remove pollutants and improve molecular oxygen activation ability.
研究领域:
材料科学
·
光催化
·
环境科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Luozeng Zhou,Sipeng Huang,Tingting Han,Yiting Peng,Feipeng Cai,Tongtong Xu,Jincheng Du,Zhenhe Feng,Linsen Li,Qunjie Xu
The layered lithium nickel-rich cathodes have become one of the most promising candidates for next-generation lithium-ion batteries with high energy density , However, the nickel-rich cathode suffers from a rapid decay of capacity due to their intrinsic instability and undesirably residual lithium compounds originated from LiNiO 2 structural changes on the surface, hindering large-scale commercial application. Herein, a continuous and uniform oxygen vacancy enriched-MoO 3-x coating was successfully synthesized and reacted residual lithium compounds as a functional layer on the cathode. Such chemically reconstructed coating (Li 2 MoO 4 ) strategy endows the 1 wt% MoO 3-x coated NCA cathode with a fast Li + ions transport and enhanced structural stability , leading to an outstanding discharge capacity of 214.0 mAh g −1 at 0.1C (1C = 270 mA g −1 ), a better capacity retention of 80.3 % after 120 cycles at 0.5C, and an excellent high rate capability of 120 mAh g −1 at 5C cycled in voltage range of 2.75 V–4.3 V. This work provides an effective strategy to modulate surface structure towards advanced Ni-rich cathodes for high-performance lithium-ion batteries.
研究领域:
材料科学
·
电化学
·
储能技术
·
表面工程
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纳米技术
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry B
·
2019
·Vol. 7
·期 12
·2032-2042
·
IF 5.047
Atheer Hameid Odda,Youcui Xu,Jun Lin,Gang Wang,Naseeb Ullah,Akif Zeb,Kuang Liang,Long-ping Wen,An-Wu Xu
Development of near infrared (NIR) light-responsive nanomaterials for high performance multimodal phototherapy within a single nanoplatform is still challenging in technology and biomedicine. Herein, a new phototherapeutic nanoagent based on FDA-approved Prussian blue (PB) functionalized oxygen-deficient molybdenum oxide nanoparticles (MoO3−x NPs) is strategically designed and synthesized by a facile one-pot size/morphology-controlled process. The as-prepared PB-MoO3−x nanocomposites (NCs) with a uniform particle size of ∼90 nm and high water dispersibility exhibited strong optical absorption in the first biological window, which is induced by plasmon resonance in an oxygen-deficient MoO3−x semiconductor. More importantly, PB-MoO3−x NCs not only exhibited a high photothermal conversion efficiency of ∼63.7% and photostability but also offered a further approach for the generation of reactive oxygen species (ROS) upon singular NIR light irradiation which significantly improved the therapeutic efficiency of the PB agent. Furthermore, PB-MoO3−x NCs showed a negligible cytotoxic effect in the dark, but an excellent therapeutic effect toward two triple-negative breast cancer (TNBC) cell lines at a low concentration (20 μg mL−1) of NCs and a moderate NIR laser power density. Additionally, efficient tumor ablation and metastasis inhibition in a 4T1 TNBC mouse tumor model can also be realized by synergistic photothermal/photodynamic therapy (PTT/PDT) under a single continuous NIR wave laser. Taken together, this study paved the way for the use of a single nanosystem for multifunctional therapy.
研究领域:
生物医学工程
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纳米技术
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癌症治疗
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ChemSusChem
·
2018
·Vol. 11
·期 23
·4060-4070
·
IF 7.411
Huimin Zhou,Xin Xia,Pengfei Lv,Jin Zhang,Xuebin Hou,Min Zhao,Kelong Ao,Di Wang,Keyu Lu,Hui Qiao,Malgorzata Zimniewska,Qufu Wei
Graphical Better anode by design : A designed anode structure combining the metallic conductivity of 1T-MoS 2 with interconnected TiO 2 /MoO 3 grains is beneficial for fast charge-transfer reactions and reduced transmission losses. Moreover, a flexible carbon framework buffers swollen lithium compounds, such as Li x MoO 3 and Li x MoS 2 , and supports the shrinking delithiated products, with potential for achieving high capacity stability in both Li- and Na-ion batteries. Integrating layered nanostructured MoS 2 with a structurally stable TiO 2 backbone to construct reciprocal MoS 2 /TiO 2 -based nanocomposites is an effective strategy. C@TiO 2 /MoO 3 composite nanofibers doped with 1T-phase MoS 2 nanograins were fabricated by partially sulfurizing MoO x /TiO 2 precursors. By controlling a suitable preoxidation temperature before severe thermolysis of polyvinylpyrrolidone (PVP), the MoO x /TiO 2 precursors formed a polymer-embedded array through coordination of the Mo source and pyrrolidyl groups of PVP. Sulfidation under water/solvent hydrothermal conditions led to partial formation of metallic 1T-phase MoS 2 from the MoO x precursor with preoxidation at 200 °C. After carbonization, the TiO 2 /MoO 3 /MoS 2 nanograins were encapsulated in a carbon backbone in a vertical pattern, providing both chemical contact for confined electron transport and sufficient space to adapt to volume changes. The obtained carbon-based platform not only has the advantages of an integral structure, but also exhibited ultrastable specific capacities of 540 and 251 mAh g −1 for Li-ion batteries and Na-ion batteries, respectively, after 100 cycles.
研究领域:
材料科学
·
电化学
·
纳米技术
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Solar RRL
·
2019
·Vol. 3
·期 10
·1900131
·
IF 0
Afei Zhang,Zhengji Zhou,Wenhui Zhou,Dongxing Kou,Yuena Meng,Yafang Qi,Shengjie Yuan,Sixin Wu
A back contact interface in a kesterite Cu 2 ZnSn(S,Se) 4 (CZTSSe) photovoltaic device plays an important role in fabricating high quality semiconducting photoactive layers and improving carrier extraction efficiency. However, uncontrolled decomposition reactions between the CZTSSe absorber layer and Mo electrode result in high series resistance and recombination at the back interface. The insertion of high work function MoO 3 as an interfacial layer is considered as a promising way to engineer the back contact. This highlights the importance of elucidating the chemistry and dynamics of MoO 3 at the Mo/kesterite interface in the CZTSSe annealing process. Herein, A detailed investigation of the elemental diffusion and chemistry of the back contact with the MoO 3 intermediate layer during selenization is carried out. The results demonstrate that the presence of the MoO 3 interfacial layer largely suppresses the chemical reaction between Mo and CZTSSe in the annealing process, inducing high quality CZTSSe absorbing films with fewer voids and reducing the thickness of MoSe 2 from 209 to 84 nm when the optimized thickness of MoO 3 is 10 nm. This finally leads to the increase in device efficiency from 9.02% to 10.92%, and the best performance where an efficiency of 11.37% is achieved.
研究领域:
材料科学
·
光伏技术
·
半导体物理
·
太阳能电池技术
✓ 已验证
产品关联
DOI
危险品化学品经营许可证（带存储）