Optical Materials Express
·
2020
·Vol. 10
·期 10
·2480-2490
·
IF 3.064
Meng Wang,Meng Wang,Meng Wang,Shaolong Huang,Yu-Jia Zeng,Ruqing Huang,Dalin Sun,Meng Wang,Jihong Pei,Shuangchen Ruan,Shuangchen Ruan
Wideband optical saturable absorbers (SA) are an ideal laser component for pulse laser generation in different wavelengths, which has attracted tremendous attention in recent years. Herein, a MoO3-x-based novel wideband optical SA has been demonstrated by utilizing it for ∼1/1.5/2 μm Q-switched pulses generation. After separately integrating the MoO3-x-SA into Yb-, Er- and Tm-doped fiber lasers, passively Q-switched pulses with pulse durations of ∼1.5/2.2/1.6 μs, repetition rates of several tens kilohertz at corresponding wavelengths of ∼1038/1562.9/1910 nm are obtained. Our work firstly reveals the remarkable wideband optical saturable absorption of the MoO3-x, which strongly implies the potential application in infrared photonics devices. It may also provide new opportunities for wideband optical SA based on oxygen-deficient metal oxides.
研究领域:
光学
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材料科学
·
激光技术
✓ 已验证
DOI
高影响因子
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
·
2025
·
IF 6.2
Xin Li,Ruixuan Xu,Hao Zhang,Heng Deng,Qi-Long Yan,Hongqi Nie
Aluminum (Al) can significantly improve the energy density and specific impulse (I sp ) of solid rocket propellants as the primary metal fuel, but its incomplete combustion results in an undesirable energy release performance. The strategy of fuel/oxidizer interfacial control has been proved to effectively enhance the reaction efficiency of Al-based composites and thus improving the combustion properties of solid propellants. Ammonium perchlorate (AP) is commonly used as a high-energy oxidizer in solid propellant, and its thermal decomposition behavior directly affects the combustion characteristics of propellants. The addition of combustion catalysts can decrease thermal decomposition temperature and increase thermal reactivity of AP. As an emerging catalytic material, MoO 3-x quantum dots (QDs) with oxygen vacancies possess a high specific surface and strong charge adsorption capacity, which renders it a great potential for catalyzing AP. In this study, MoO 3-x QDs were introduced as catalyst and compared with traditional nano-metal oxides (M x O y ), the spherical Al@AP/M x O y composites with polydopamine as interfacial layer were prepared by spray drying method. The particle morphology, thermal decomposition kinetics and ignition properties of Al@AP/M x O y were investigated. The phase composition, morphology and particle size distribution for the condensed combustion products of composites were further analyzed. The decreased particle size and less unreacted Al content in CCPs indicated the increase of combustion efficiency between Al and AP. In particular, Al@AP/MoO 3-x has the higher heat of reaction, lower thermal decomposition temperature and small CCPs particle size distribution, which collectively suggested that the MoO 3-x is capable to improve the thermal reactivity of Al@AP composites with a higher combustion efficiency.
研究领域:
材料科学
·
燃烧与推进
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF CATALYSIS
·
2020
·
IF 6.146
Jinjun Peng,Jun Shen,Xiaohui Yu,Hua Tang,Zulfiqar,Qinqin Liu
Plasmonic nonmetal semiconductors with localized surface plasmon resonance (LSPR) effects possess extended light-response ranges and can act as highly efficient H 2 generation photocatalysts. Herein, an LSPR-enhanced 0D/2D CdS/MoO 3− x heterojunction has been synthesized by the growth of 0D CdS nanoparticles on 2D plasmonic MoO 3− x elliptical nanosheets via a simple coprecipitation method. Taking advantage of the LSPR effect of the MoO 3− x elliptical nanosheets, the light absorption of the CdS/MoO 3− x heterojunction was extended from 600 nm to the near-infrared region (1400 nm). Furthermore, the introduction of 2D plasmonic MoO 3− x elliptical nanosheets not only provided a platform for the growth of CdS nanoparticles, but also contributed to the construction of an LSPR-enhanced S-scheme structure due to the interface between the MoO 3− x and CdS, accelerating the separation of light-induced electrons and holes. Therefore, the CdS/MoO 3− x heterojunction exhibited higher photocatalytic H 2 generation activity than pristine CdS under visible light irradiation, including under 420, 450, 550, and 650 nm monochromic light, as well as improved photo-corrosion performance.
研究领域:
材料科学
·
光催化
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Huijie Wang,Qi Liu,Mengyang Xu,Chenlong Yan,Xianghai Song,Xin Liu,Huiqin Wang,Weiqiang Zhou,Pengwei Huo
The localized surface plasmon resonance (LSPR) effect has shown significant progress in enhancing the efficiency of light absorption and separating photogenerated carriers. Herein, the dual-plasma enhanced 2D/2D/2D g-C 3 N 4 /Pd/MoO 3-x (CPM) S-scheme heterojunction photocatalysts were synthesized using the method of hydrothermal and electrostatic self-assembly for high-selectivity photocatalytic reduction of CO 2 to produce CO. The dual LSPR effect of MoO 3-x and ultrathin Pd nanosheets synergistically broadened the optical response range of the CPM composites and successfully improved the photocatalytic activity and near-infrared (NIR) performance. The optimized CPM-30 photocatalysts exhibited CO yields of 18.55 μmol g −1 with a selectivity of 96.3%. In addition, the CO yield reached 3.92 μmol g −1 after 4 h of NIR light photoirradiation. The electron spin resonance (ESR) and ultraviolet photoelectron spectroscopy (UPS) tests showed that the S-scheme heterojunctions were constructed by coupling g-C 3 N 4 /Pd nanosheets and MoO 3-x . This work will provide a reference for improving product selectivity through the design of two-dimensional composites and the utilization of plasma materials.
研究领域:
材料科学
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光催化技术
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Lufang Fan,Sheng Feng,Kai Wei,Xiaojun Dai,Weijie Zhang,Haihong Wang,Zhaowei Bian,Kaidi Wu,Zhiwen Ge,Jinghao Hua
In this study, we designed and fabricated a Z-scheme Cu 0.5 Cd 0.5 S/MoO 3-x (CMO) heterojunction with localized surface plasmon resonance (LSPR) effect for efficient photocatalytic hydrogen evolution. The oxygen vacancies (OVs) in MoO 3-x induced Schottky-barrier-free LSPR for the generation of hot electrons. The architecture of transition-metal-substituted solid solution (Cu 0.5 Cd 0.5 S, CCS) downshifted the conduction band (CB) of CdS from −0.45 eV to −0.38 eV and upshifted the valence band (VB) from 1.65 eV to 1.54 eV, respectively, weakening the interface barrier of the hot electrons transition from MoO 3-x to CCS and enhancing the Coulomb interaction between the electrons of MoO 3-x and the holes of CCS. Benefiting from the cooperation between Z-scheme heterojunction and LSPR effect, the hydrogen evolution rate (HER) of the optimized CMO was 19.28 mmol·g −1 ·h −1 under visible light with an apparent quantum yield (AQY) of 10.8 % at 420 nm, which was 3.0 and 1.4 times that of the CCS and CCS/MoO 3 . Moreover, the HER of CMO still reached 43.57 μmol·g −1 ·h −1 at 600 nm. This work paved a new path for efficient photocatalysts H 2 evolution by coupling Z-scheme heterojunction and non-noble-metal LSPR effect.
研究领域:
材料科学
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能源科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Rui Liu,Yunpei Cui,Teng Wang,Jiayou Liu,Bo Liu,Shuangshuang Zuo,Hesheng Yu
Plasmonic photocatalysts have attracted considerable attention in photocatalytic systems. In this study, amorphous molybdenum oxide (MoO3−x) nanodots were anchored onto ZnIn2S4 nanospheres by a hydrothermal method. The prepared ZnIn2S4/MoO3−x (ZM) composites were then used as a visible-light-responsive catalyst to achieve photocatalytic hydrogen evolution. Afterwards, the ZM composites were extensively characterized using multiple instruments and electrochemical measurements. Afterwards, the photocatalytic activity of ZM composites was evaluated under simulated sunlight (AM 1.5G) with 10% triethanolamine (TEOA) as a sacrificial reagent. Compared to pristine ZnIn2S4, the optimal composite (ZM10) boosts the hydrogen evolution rate from 1.34 mmol g−1 h−1 to 11.08 mmol g−1 h−1 and the apparent quantum efficiency (AQE) at 420 nm from 1.81% to 6.14%. The mechanism behind the enhanced photocatalytic hydrogen evolution was explored by infrared thermal image measurement, EPR tests, XPS valence band measurement and density functional theory (DFT) calculations. The localized surface plasmon resonance (LSPR) effect of MoO3−x and the formation of an interfacial Z-scheme heterojunction are revealed to be responsible for the improved photocatalytic hydrogen evolution. Finally, the cyclic experiment results show that ZM10 maintains a high hydrogen evolution rate after 5 cycles of testing, indicating strong chemical stability and good industrial potential.
研究领域:
材料科学
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光催化
·
能源化学
✓ 已验证
DOI
高影响因子
Small
·
2021
·Vol. 18
·期 10
·2107137
·
IF 13.281
Guangxin Duan,Ling Wen,Xingwei Sun,Zhuxin Wei,Ruixue Duan,Jiangfeng Zeng,Jiabin Cui,Chunyi Liu,Zepeng Yu,Xiaofang Xie,Mingyuan Gao
Diabetic ulcers (DUs) appearing as chronic wounds are difficult to heal due to the oxidative stress in the wound microenvironment and their high susceptibility to bacterial infection. A routine treatment combining surgical debridement with anti-infection therapy is widely used for treating DUs in the clinic, but hardly offers a satisfying wound healing outcome. It is known that a long-term antibiotic treatment may also lead to the drug resistance of pathogens. To address these challenges, new strategies combining both reactive oxygen species (ROS) scavenging and bacterial sterilization have been proposed for fighting against DUs. Following this idea, oxygen deficient molybdenum-based nanodots (MoO 3− X ) for healing the DUs are reported. The ROS scavenging ability of MoO 3− X nanodots is investigated and the antibacterial property of the nanodots is also demonstrated. The systematic cell and animal experimental results indicate that the MoO 3− X nanodots can effectively reduce inflammation, promote epithelial cell regeneration, accelerate angiogenesis, and facilitate DUs recovery. Most importantly, they present excellent capacity to diminish infection of methicillin-resistant Staphylococcus aureus , manifesting the potent application prospect of MoO 3− X nanodots for diabetic wound therapy.
研究领域:
纳米技术
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材料科学
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生物医学工程
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药学
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伤口护理
✓ 已验证
DOI
PubMed
高影响因子
Environmental Science-Nano
·
2021
·Vol. 8
·期 7
·2049-2058
·
IF 8.131
Yuqi Zhang,Xiang Yu,Huan Liu,Xinyi Lian,Bin Shang,Yue Zhan,Tingting Fan,Zhou Chen,Xiaodong Yi
Transition metal oxides (TMOs) are emerging as a promising class of photocatalysts for pollutants' treatment. In this report, by integrating anti-solvent crystallization and thermal treatments, we have developed a facile and environmental approach for the synthesis of MoO3−x nanosheets in the presence of hexadecyl-trimethyl ammonium bromide (CTAB). The thickness of MoO3−x nanosheets varies from 20 nm to 40 nm. CTAB promotes the formation of nanosheet morphology and Mo5+ defects. Combining experimental results and density functional theory (DFT) calculations, we demonstrate that the Mo5+ defect state in MoO3−x nanosheets can enhance visible light harvest and promote the separation of photo-generated electron–hole pairs. Hence, MoO3−x-8, the optimal photocatalyst, shows the highest concentration of surface Mo5+ defect (18.7%) and the best photocatalytic activity toward rhodamine B (RhB) photodegradation. About 95.9% RhB is degraded within 15 min under visible-light irradiation (λ > 420 nm). The kinetic rate of MoO3−x-8 reaches 117 times that of commercial MoO3. It was proved by the total organic carbon (TOC) measurements that about 43.3% of RhB molecules were degraded to CO2 and H2O. Overall, this work provides an effective pathway for the nanomaterial design and potential applications in the photocatalytic oxidation of organic pollutants.
研究领域:
材料科学
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环境科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2025
·
IF 26.8
Meng Cai,Wei Liu,Tiankai Zhang,Pengfei Yan,Yuxuan Li,Weiqian Kong,Hangjuan Wu,Zongwei Chen,Zhenkun Gu,Lin Dong,Qun Xu,Yanlin Song,Junjie Ma,Chongxin Shan,Feng Gao
All-inorganic CsPbX 3 (X = I, Br, Cl) perovskites emerged as a crucial material for addressing the stability bottleneck due to their exceptional resistance to both light-thermal stress. However, their performance is limited by adverse optoelectronic dissipation arising from inadequate photon conversion and chaotic carrier energetics. Herein, the mechanism of the unique nonlinear plasmonic effect in van der Waals 2D MoO 3-x is elucidated, which is mediated by electronic intermediate states. It demonstrates that the 2D MoO 3-x serves as a light-capture-antenna in heterodimensional CsPbX 3 -MoO 3-x optically coupled system, contributing to the accumulation the optical field energy on the nanoscale and resulting in a remarkable 59% increase in photon convergence. Additionally, facet-oriented carrier channels can be established through heteroepitaxy along matched Mo-O octahedron. This optoelectrical-bimodal-coupling engineering combined with a bifacial light-harvesting configuration yields a bifacial equivalent efficiency of 27.33%, which stands as the supreme performance in all-inorganic perovskite photovoltaics. Graphical This remarkable work combines supercritical CO 2 chemical engineering, two-dimension plasmon photophysical science, and perovskite photovoltaic technology. It introduces novel concepts like broad - spectrum coupled photon absorption, the intermediate - localized - states model, and optoelectrical - bimodal - coupling engineering. It aims to combat optoelectronic dissipation and enhance energy harvesting via a heterodimensional van der Waals optically coupled system.
研究领域:
光伏技术
·
等离激元学
·
纳米光子学
·
材料科学
·
光电子学
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钙钛矿太阳能电池
·
固体物理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
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
·
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
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
·
生物医学工程
·
纳米技术
✓ 已验证
产品关联
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
·
材料科学
·
能量转换
·
环境科学
·
物理化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）