JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Yinfen Cheng,Junfeng Du,Nianzhong Ma,Zhong Li,Xinyi Hu,Lieqi Liu,Zhentao Ji,Jian Zhen Ou
The hazards to the ecological environment and human health promote the development of NO 2 monitoring sensors. However, the high operating temperature of traditional metal oxide sensitive materials limits the application of gas sensor-based systems in low power monitoring. Here, we utilize oxygen vacancy enriched 2D MoO 3-x , enabling the high performance optoelectronic NO 2 gas sensing at room temperature. The introduction of oxygen vacancies in MoO 3-x results in the red-shift light absorption from purple light to cyan light and high surface activity with negative potential, thus promoting its application in optoelectronic room temperature gas sensing. Under 365 nm UV light irradiation, oxygen vacancy enriched 2D MoO 3-x based gas sensor shows a good room temperature reversible response towards different concentrations of NO 2 , in which a response factor of 6.46 is achieved towards 10 ppm NO 2 . Moreover, excellent repeatability in six continuous tests, selectivity towards five common gases, and long-term stability for four months were also demonstrated in this sensor. This work provides an effective approach for tuning the electronic structure and surface activity of metal oxide, and demonstrates the application feasibility of oxygen vacancy enriched metal oxide in high optoelectronic gas sensing.
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高影响因子
TRIBOLOGY INTERNATIONAL
·
2026
·
IF 7.6
Qingqing Zhang,Junhong Jia,Runze Wei,Xiaoyu Jiao,Nairu He,Jie Yang,Haichao Zhao,Dongshen Li
NiCrAlY-based composite coatings with 10–30 wt% MoO 3 -Bi 2 O 3 (1:1) were fabricated by atmospheric plasma spraying (APS) for high-temperature self-lubrication. Their tribological behaviors against GH5188 superalloy were evaluated from room temperature (RT) to 800 ℃. While both porosity and microhardness increased with oxide content, the 20 wt% coating (NMB2) exhibited optimal overall performance, achieving a minimum friction coefficient of 0.28 and a wear rate of 2.84 × 10 −5 mm 3 /(N·m) at 800 ℃. At elevated temperatures, lubricating oxides such as NiMoO 4 and CoMoO 4 formed on the wear surface. Concurrently, Co and W from the GH5188 counterpart oxidized and transferred, contributing to a stable composite tribofilm. This synergistic film effectively reduced friction and wear, identifying the NMB2 as a promising protective solution for high-temperature reciprocating components in aerospace applications.
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高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Yongjie Xie,Le Sun,Fei Ying,Gaoyang Fang,Zhanhui He,Wu Lei,Qingli Hao,Xingen Xie
Aluminum nitride (AlN) ceramics are widely used in electronic packaging due to their high thermal conductivity. However, AlN ceramics typically exhibit high reflectance in the visible to near-infrared region, thereby limiting their application in high-power optoelectronic integrated packaging. To address this, black AlN ceramics were fabricated in this study via tape casting and pressureless sintering, using MoO 3 as a coloring agent and Y 2 O 3 as a sintering additive. Mechanistically, Y 2 O 3 promotes densification of the AlN ceramic structure through liquid-phase sintering via the formation of YAlO 3 (YAP), which suppresses phonon scattering and thus enhances thermal conduction. MoO 3 decomposes to form fine and isolated Mo second phase particles that precipitate at triple grain boundaries, exerting a pinning effect that promotes grain refinement and improves the flexural strength of the AlN ceramics. The Mo second phase reduces broadband reflectance through free carrier response and multiple scattering. Density functional theory (DFT) calculations reveal that the solid solution of multivalent Mo and the formation of charge compensating defects introduce defect energy levels within the bandgap. The synergistic effect of these mechanisms enables the black coloration of AlN ceramics. The results show that at a sintering temperature of 1800 °C and a MoO 3 doping content of 1.5 wt%, the black AlN ceramics achieve a thermal conductivity of 173.2 W·m −1 ·K −1 , a flexural strength of 471.8 ± 10.2 MPa, a L value of 42.37, and a reflectance below 15 % in the visible and near-infrared regions.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Kai Wei,Jiasheng Zhu,Lufang Fan,Weijie Zhang,Huarui Han,Changchang Ma,Kan Hu,Sheng Feng
Here, we constructed S-scheme CdIn 2 S 4 /MoO 3-x (CISMO) photothermal catalyst with interface Mo-S bond for efficient overall water splitting. As expected, hydrogen (H 2 ) and oxygen (O 2 ) evolution rates of the optimized CISMO reached 554.71 and 277.88 μmol·g −1 ·h −1 , respectively, far higher than that of CdIn 2 S 4 (71.78 and 34.45 μmol·g −1 ·h −1 ) and MoO 3-x (0 and 21.83 μmol·g −1 ·h −1 ). Mechanism analysis revealed that the photogenerated carrier transfer followed an S-scheme route. More importantly, the photocatalytic performance of CdIn 2 S 4 /MoO 3-x was highly relevant with the oxygen vacancies (Ovs) in pristine MoO 3-x . In S-rich environment, the Ovs could be imbedded by sulfur (S) for the formation of interface Mo-S bond during CISMO fabrication. Interface Mo-S bridge facilitated the photogenerated carriers transfer between CdIn 2 S 4 and MoO 3-x . Moreover, the metal-free localized surface plasmon resonance effect, originating from the residual Ovs in CdIn 2 S 4 /MoO 3-x , could further enhance the water splitting performance through photothermal conversion. This work shed light on controllable interface chemical bond formation in heterojunction photocatalysts to signally promote the photocatalytic performance.
研究领域:
光催化
·
材料科学
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能量转换
·
异质结工程
·
可再生能源
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Shixian Chen,Gaohui Du,Kaiting Hu,Yunting Wang,Chengcheng Feng,Yunyun Liu,Yan Cheng,Jinchao Cui,Di Han,Huayu Li,Libing Yao,Dong Wang,Qingmei Su
The commercialization of lithium‑sulfur (Li S) batteries faces fundamental issues from polysulfide shuttling to inefficient redox kinetics, compounded by the absence of systematic methods for catalyst design. Herein, we present a machine learning (ML)-driven strategy to design MoS 2 /MoO 3 heterostructures anchored on nitrogen-doped hollow carbon shells (NCS) via gradient boosting decision trees modeling. The ML-guided optimization identifies critical synthesis parameters (e.g., carbonization temperature, oxidation duration) to balance adsorption capacity and catalytic activity. The resulting heterostructure exhibits superior polysulfide confinement and accelerated conversion kinetics, enabled by MoO 3 -induced anchoring sites and NCS-accelerated electron/ion transport. The Li S batteries integrated with the MoS 2 /MoO 3 -NCS-modified separators deliver a remarkable initial capacity of 1002 mAh g −1 at 1C and remain 661 mAh g −1 after 500 cycles, with a low capacity decay rate of 0.068 %. Even at a high sulfur loading of 8.4 mg cm −2 , the pouch cell maintains 7.25 mAh cm −2 areal capacity with 90.1 % retention after 100 cycles. This work establishes a paradigm for ML-accelerated electrocatalyst design, addressing critical challenges in Li S batteries and advancing scalable synthesis strategies for next-generation energy storage.
研究领域:
储能
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电化学
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机器学习
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材料科学
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纳米技术
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高影响因子
POWDER TECHNOLOGY
·
2019
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IF 3.413
Hu Sun,Guanghui Li,Junjie Yu,Jun Luo,Mingjun Rao,Zhiwei Peng,Tao Jiang
The existing methods for MoO 3 production from high-grade molybdenite concentrates normally suffer from the inefficiency of oxidation and complexity of the overall process. In this work, a novel method for MoO 3 production from alumina-silica-added molybdenite concentrate pellets by simultaneous oxidizing-volatilizing was proposed, validated and compared with other methods. Molybdenite concentrate mixed with additives was fabricated into spherical balls and roasted in air. Molybdenum disulfide was rapidly oxidized, volatilized and thus separated from pellets, wherein additives were sintered to be mullite as porous framework to keep the strength of single pellet, and in turn to support the stacked pellets. With mass ratio of additives to ore 1:2, ratios of S removal and Mo recovery from pellets reached over 99.9% and 97.2% respectively at 1050 °C within 20 min, and the condensed material was identified to be valuable MoO 3 with purity over 99.9%. The excellent performance of MoO 3 separation was attributed to the construction of firm pellet layers and favorable diffusion conditions inside pellets.
研究领域:
冶金学
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材料加工
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无机化学
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提取冶金
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高影响因子
FUEL
·
2026
·
IF 7.8
RuoKun Jia,TianXiang Li,PengPeng Wang,DuMin Li,JiaHui Chen,XiaoHang Yang,QingXiao Zhao,Xin Cheng,LingYun Zhang,Xiaoxi Liu
A Cu: MoO 3 /g-C 3 N 4 binary heterojunction photocatalyst was synthesized via a hydrothermal method, achieving a light response that covers nearly the entire visible region. The material shows a strong, broad absorption band from 400 to 700 nm, significantly improving its visible-light harvesting and utilization efficiency. Optimization of the g-C 3 N 4 , Cu, and Mo molar ratios further enhanced the catalyst’s redox performance under visible-light irradiation. Through combined XPS, UV–vis, and in situ DRIFTS characterizations, it was verified that the Cu: MoO 3 /g-C 3 N 4 photocatalyst possesses a wide visible-light absorption range and effectively transforms absorbed long-wavelength photons into photogenerated electron-hole pairs, thereby facilitating the separation and transfer of charge carriers. Due to the simultaneous enhancement of broad-spectrum light capture and charge separation/transfer efficiency, this catalyst demonstrates excellent catalytic activity in visible light-driven CO 2 conversion, with a maximum methanol production rate of 102.52 μmol·g −1 ·h −1 . This work verifies the feasibility of efficient visible light-driven CO 2 conversion and provides a viable design approach and reference for constructing multi-metal-based photocatalysts with full visible light response.
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高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2022
·Vol. 106
·期 2
·860-866
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IF 4.186
Weiliang Jin,Jie Pang,Qian Kou,Chuntao Ge,Hongmin Zhu,Geir Martin Haarberg,Saijun Xiao,Jun Zhang
This paper demonstrates the availability of electro-codeposition (i.e., the simultaneous occurrence of electrophoretic deposition of nanoparticles and electrochemical deposition of metal ions) in molten salts without the assistance of stirring of the bath. In molten NaCl–KCl–AlCl 3 –MoO 3 system containing TiB 2 nanoparticles at 710°C, the electro-codeposition of TiB 2 nanoparticles and Mo(VI) ions has been achieved, and a (Ti, Mo)B 2 coating has been prepared.
研究领域:
材料科学
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电化学
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表面工程
·
纳米材料
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高影响因子
Journal of Environmental Sciences
·
2022
·
IF 6.796
Xuedong Du,Wenyang Fu,Pei Su,Qizhan Zhang,Minghua Zhou
An ultra-efficient electro-Fenton catalyst with porous carbon coated Fe-Mo metal (FeMo@PC), was prepared by calcining MIL-53(Fe)@MoO 3 . This FeMo@PC-2 exhibited impressive catalytic performance for sulfamethazine (SMT) degradation with a high turnover frequency value (7.89 L/(g·min)), much better than most of reported catalysts. The mineralization current efficiency and electric energy consumption were 83.2% and 0.03 kWh/g TOC , respectively, at low current (5 mA) and small dosage of catalyst (25.0 mg/L). The removal rate of heterogeneous electro-Fenton (Hetero-EF) process catalyzed by FeMo@PC-2 was 4.58 times that of Fe@PC/Hetero-EF process. Because the internal-micro-electrolysis occurred between PC and Fe 0 , while the co-catalysis of Mo accelerated the rate-limiting step of the Fe 3+ /Fe 2+ cycle and greatly improved the H 2 O 2 utilization efficiency. The results of radical scavenger experiments and electron paramagnetic resonance confirmed the main role of surface-bound hydroxyl radical oxidation. This process was feasible to remove diverse organic contaminants such as phenol, 2,4-dichlorophenoxyacetic acid, carbamazepine and SMT. This paper enlightened the importance of the doped Mo, which could greatly improve the activity of the iron-carbon heterogeneous catalyst derived from metal-organic frameworks in EF process for efficient removal of organic contaminants.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Lei Hu,Liujun Jin,Tingyu Zhang,Jianhua Zhang,Jinghui He,Dongyun Chen,Najun Li,Qingfeng Xu,Jianmei Lu
The electronic modulation and morphology control of electrocatalysts are effective strategies to improve their catalytic performance. Herein, MoO 2 -MoO 3 /Ni 2 P nanoflowers were fabricated on the skeleton of conductive nickel foam as an electrocatalyst with enhanced performance via a universal hydrothermal and phosphating method. The introduction of P and Mo into the nickel-based catalyst through the co-doping strategy effectively adjusted the electronic structure of the Ni active sites, thereby significantly improving the performance of the catalyst. Particularly, the introduction of Mo allowed adjusting the morphology of the material, thereby increasing the electrochemical active area and promoting the exposure of more active sites. This strategy for improving the electrocatalyst’s performance in urea-assisted water splitting will provide a new concept for the simultaneous mitigation of the energy crisis and environmental contamination.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Shiyue Hu,Junhong Liu,Xuanlan Luo,Qiqi Shen,Yu Qin,Haikun Hu,Jinhai Yuan,Shuangkou Chen,Di Xu
Currently, photocatalytic degradation is a fascinating technology due to its capability to treat escalating environmental problems by degrading chemicals like dyes and pharmaceuticals from wastewater. Herein, the hexagonal prism GQDs/h-MoO 3 composite photocatalyst was fabricated through a facile hydrothermal approach. The synthesized samples were identified by XRD , SEM, FT-IR, XPS , UV-Vis DRS , and PL technologies to study the crystal structure, morphology, surface chemical composition , and optical properties . The preparation circumstances of binary compounds, such as different GQDs (Graphene quantum dots) loading amounts, precursor solution pH, hydrothermal temperature, and hydrothermal time were optimized, also, and the photocatalytic activity of materials is determined by photodegradation of Methylene Blue in this approach, which systematically investigated the impact of operational conditions on the efficiency of the photocatalytic reaction. The results revealed that 10GQDs/h-MoO 3 has the best photocatalytic performance among competitors, which exhibited a high photodegradation efficiency (85.58%) of MB, and the rate was approximately 2.13 times greater than pristine h-MoO 3 . Moreover, the PL and EIS measurements proved the outstanding separation and migration ability of the photo-excited carriers of composite, which was attributable to the fact that GQDs can serve as electron transporters and acceptors to induce electron-hole separation efficiently. Finally, the free radical scavenging experiments confirmed that the primary active species was h + in the photocatalytic process, as well as a potential explanation for the improved photocatalytic activity of GQDs/h-MoO 3 photocatalysts was proposed.
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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.
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