Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 3
·123006
·
IF 7.5
Chuanxuan Zhou,Ziyi Zhang,Mengyun Wang,Fuchao Yang
Formation of heterojunction via composite nanomaterials represents a proficient approach for enhancing gas-sensitivity capabilities. In this paper, the design of a xylene sensor based on SnO 2 /MoO 3 heterojunction structure was reported, where mesoporous SnO 2 was prepared utilizing a facile carbon template and then loaded with MoO 3 . The chemical composition, microstructure, and gas-sensing performance of the composite material were systematically characterized and studied. The SnO 2 /MoO 3 sensor achieved a response value of 28.3 at 200 °C for 20 ppm xylene, significantly higher than pure SnO 2 and MoO 3 , with a detection limit reaching 55 ppb. The results indicate that the SnO 2 /MoO 3 composite material significantly enhances sensing response and reduces response/recovery time through its mesoporous structure and n-n heterojunction characteristics. Finally, we focused on analyzing the band structure of the SnO 2 /MoO 3 heterojunction and the xylene sensing mechanism. This work contributes to the study of gas-sensing properties in SnO 2 -based composite materials and provides new insights for real-time and precise detection of xylene.
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DOI
高影响因子
ACS Applied Electronic Materials
·
2026
·
IF 4.7
Haolong Sun,Tingting Liang,Tingting Zhu,Pengqi Hai,Sen Liang,Xiaoshan Wang
Multifunctional flexible electronic sensors are highly demanded since single-function variants fail to satisfy portable/wearable electronics’ complex and growing requirements. Currently fabricated via multistep integration of single-function sensors, developing a single multifunctional sensing material remains challenging. In this study, Sn-doped MoO3 (SnxMo1–xO3) nanobelts were fabricated into a dual-mode sensor for ethanol gas and temperature detection. The Sn0.05Mo0.95O3 sensor detected ethanol at an ultralow concentration of 0.1 ppm at room temperature. Its response to 10 ppm of ethanol was 2.1 times higher than that of pure MoO3 sensor. In addition, the Sn0.05Mo0.95O3 temperature sensor demonstrated a negative temperature coefficient of resistance (TRC) of −0.0183 °C–1, an 8-fold improvement over pure MoO3. The enhanced sensing performance of Sn doping can be ascribed to four key factors: a narrowed band gap, reduced adsorption energy, increased charge transfer, and an accelerated electron transfer rate. This research provides a highly efficient sensing material with promising practical applications for dual-mode ethanol and temperature detection.
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产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2017
·
IF 4.798
Huichao He,Yong Zhou,Gaili Ke,Xiaohui Zhong,Minji Yang,Liang Bian,Kangle Lv,Faqin Dong
A MoO 3 /BiVO 4 heterojunction film consisting of dispersed nano-MoO 3 on the surface of BiVO 4 nanoflake was constructed for photoelectrochemical water oxidation . In comparison with bare BiVO 4 and MoO 3 film, the MoO 3 /BiVO 4 heterojunction film shows enhanced water oxidation activity. At 0.8 V vs. SCE, the photocurrent on the optimal MoO 3 /BiVO 4 heterojunction film increases by up to about 6 times compared to that on the bare BiVO 4 film. The conduction and valence band potential of MoO 3 are found to be more positive than those of BiVO 4 , and the electric conductivity for MoO 3 and BiVO 4 is on the order of 10 −6 S cm −1 and 10 −9 S cm −1 , respectively. Thus, the origin of enhanced water oxidation activity on the MoO 3 /BiVO 4 heterojunction film can be primarily ascribed to the band potential and conductivity differences between MoO 3 and BiVO 4 , which are advantageous for separating and transferring the surface charge of BiVO 4 .
研究领域:
材料科学
·
光电化学
·
可再生能源
·
半导体异质结
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DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2017
·
IF 5.401
Jia Zhang,Peng Song,Jia Li,Zhongxi Yang,Qi Wang
Hierarchical MoO 3 microboxes were successfully prepared via a facile hydrothermal method and use MnCO 3 microcubes as the templates. The morphology and structure of as-obtained product were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), nitrogen adsorption-desorption measurement (BET). The results show that hierarchical MoO 3 microboxes possess regular size and morphology, and the size is about 2–3 μm, the hierarchical shell of MoO 3 microboxes with a thickness of about 150 nm. The response value of sensor based on hierarchical MoO 3 microboxes to 100 ppm ethanol is 78 at an operating temperature of 260 °C, and the response and recovery time are less than 15 and 5 s, respectively. It is expected that the hierarchical MoO 3 microboxes with the advantages of hierarchical structure and hollow structure will become a promising functional material in monitoring and detecting of ethanol.
研究领域:
材料科学
·
纳米科技
·
传感器技术
·
功能材料
·
化学传感
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DOI
高影响因子
Batteries & Supercaps
·
2024
·Vol. 7
·期 8
·e202400089
·
IF 5.1
Min Qing,Zhi Hui Hao,Xiangwei Zhao,Qin Dong,Zhimin He,Wei Hong,Rong Li
Lithium-sulfur batteries (LSBs) are seriously impeded by poor reaction kinetics and the polysulfides shuttling, leading to low utilization of sulfur and poor cycling performance. Herein, amorphous MoS 2 /MoO 3 nanosheets are prepared by a one-step formamide (FA)-assisted strategy. Due to the merits of high adsorption capability and good catalytic activity of MoS 2 , relatively high electronic conductivity and strong polarity of MoO 3 , and abundant active sites of amorphous nanosheet structure, the LSBs based on amorphous MoS 2 /MoO 3 -2 nanosheets coated separator exhibit an outstanding specific capacity (1420.2 mA h g −1 at 0.1 C), excellent rate capacity (505.4 mA h g −1 at 5 C), and long cycle life (a negligible decay rate of 0.063 % per cycle at 0.5 C). This work provides an idea for designing efficient amorphous catalytic materials in LSBs. Graphical Amorphous MoS 2 /MoO 3 nanosheets with high adsorption capability, good catalytic activity, and abundant active sites are employed as high-efficient polysulfide barrier in Li−S batteries.
研究领域:
材料科学
·
电化学
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能源存储
·
纳米材料
·
催化化学
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DOI
高影响因子
Nanomaterials
·
2020
·Vol. 10
·期 6
·1124
·
IF 4.324
Wan Zhao,Xin Liu,Xiuru Yang,Chunxi Liu,Xiaoxiao Qian,Tao Sun,Wenya Chang,Jingjing Zhang,Zhi Chen
Metallic 1T-phase MoS2is a newly emerging and attractive catalyst since it has more available active sites and high carrier mobility in comparison with its widely used counterpart of semiconducting 2H-MoS2. Herein, 1T/2H-MoS2(N) (N: MoO3nanowires were used to prepare 1T/2H-MoS2) was synthesized by using molybdenum trioxide (MoO3) nanowires as the starting material and applied in the photodegradation of antibiotic residue in water. Enhanced photocatalytic performance was observed on the obtained 1T/2H-MoS2(N), which was 2.8 and 1.3 times higher than those on 1T/2H-MoS2(P) (P: commercial MoO3powder was used to prepare 1T/2H-MoS2) and 2H-MoS2, respectively. The active component responsible for the photodegradation was detected and a reaction mechanism is proposed.Keywords:1T/2H-MoS2composite;molybdenum trioxide nanowires;photodegradation of antibiotic residue;hydrothermal method
研究领域:
材料科学
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环境科学
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催化化学
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产品关联
DOI
PubMed
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2024
·
IF 5.3
Ying Zhou,Fengyang Kong,Jiaqing Zhou,Jidan Hu,Guoying Zhu
Waterborne epoxy (WEP) resins have gained considerable attention for their environmentally friendly characteristics. Nevertheless, they are susceptible to substantial failures due to electrochemical corrosion, particularly when the coating is compromised or exposed to harsh corrosion environments. Furthermore, its long-term anticorrosive performance is affected by certain inherent defects. In this study, inspired by the adhesive properties of mussels, polydopamine (PDA) was used as a green binder to integrate graphene oxide (GO), h-M O O 3 , and WEP matrix, creating a uniform three-dimensional (3D) network structure. PDA-modified two-dimensional GO nanosheets can also create a porous carrier capable of loading anticorrosive Mo derivatives, imparting self-healing properties that enhance anti-corrosion performance. The resulting composites exhibited remarkable self-healing ability due to the unique design of the PDA-rGO porous structure infused with anticorrosive MoO 3 . Subsequently, X-ray diffraction, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, and ultraviolet-visible spectroscopy were used to confirm the PDA-rGO/MoO 3 nanostructure. The results confirmed the successful self-polymerization of PDA on the GO surface, converting it into reduced GO (rGO). Then PDA-rGO/MoO 3 composite WEP coatings were systematically evaluated by electrochemical impedance spectroscopy (EIS), microscopy and acceleration corrosion experiment. In addition, electrochemical impedance spectroscopy (EIS) and microscopy were used to assess the PDA-rGO/MoO 3 composite coatings. The EIS results revealed that the composite coating with 0.5 wt% PDA-rGO/MoO 3 substantially enhanced the anti-corrosion performance compared with the control samples. After prolonged immersion for 60 days in a 3.5 wt% NaCl solution, the composite coating exhibited outstanding anti-corrosion performance, surpassing that of the GO/WEP coating by three orders of magnitude. This composite nanocoating provides valuable insights into the design of well-dispersed, 3D network-structured coatings with self-healing properties for corrosion protection, which opens up new possibilities for the practical application of composite nanohybrids in the field of anti-corrosive coatings.
研究领域:
材料科学
·
腐蚀与防护
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纳米技术
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产品关联
DOI
高影响因子
IONICS
·
2024
·
IF 2.4
Tang Yi,Yang Kejia,Chen Han,Liu Mingjun,Zhu Bocan,Zhou Zhitong,Liang Guangyan,Yue Chenxi,Chen Jian
In our pursuit of high-performance lithium-ion battery (LIB) anodes, we developed a hybrid electrospun membrane consisting of MoO 3 nanorods (MoO 3 NRs) integrated with carbon nanofibers (CNFs), termed MoO 3 @CNFs. Serving as an anode, this membrane boasts several advantages. Firstly, it capitalizes on the novel structure of MoO 3 @CNFs, enabling rapid ion/electron transport pathways. Secondly, due to the carbon skeleton, MoO 3 is protected from coming into direct contact with the electrolyte. Thirdly, the consistent internal structure of MoO 3 @CNFs enhances conductivity. Experimental findings reveal that the anode with a relatively low MoO 3 content, specifically 33%MoO 3 @CNFs (comprising 33%MoO 3 NRs), achieves a reversible specific capacity of 657 mAh g −1 after 140 cycles at a low current density of 0.2 A g −1 , demonstrating superior high-rate electrochemical kinetics and extended cycling life. Kinetic analysis indicates contributions from surface capacitance processes and diffusion-controlled insertion. Our approach not only facilitates the acquisition of various one-dimensional (1D) nanostructure composites but also propels novel research in ultrafast rechargeable lithium-ion battery electrode materials.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Zhikun Wang,Zhuo Chen,Ayesha Yousaf,Lan Wu,Guixin Jin,Zhigang Shao,Zhihua Zhao
Herein, a resistive gas sensor based on Molybdenum tri oxide (MoO 3 )/ 9 % mass fraction of multi-walled carbon nanotubes (MWCNTs-9) nanocomposites was developed by hydrothermal method to detect NH 3 gas at room temperature. According to the findings, outstanding resistance change rate of 187.5 % was observed in MoO 3 /MWCNT-9 sensor when exposed to 100 ppm NH 3 at room temperature (25 °C). In contrast, 8.2 % response rate was recorded for pure MoO 3 sensor when exposed to same condition and the response value of newly fabricated sensor was improved by about 22.9 times to unalloyed MoO 3 . In addition, the nanocomposite sensor consisting of MoO 3 /MWCNT-9 had demonstrated excellent selectivity, repeatability, and a high level of sensitivity in detecting low concentrations of NH 3 at low temperature. During experiment when the sensor desorbed NH 3 gas at room temperature, a certain instantaneous voltage was applied, which greatly reduces the sensor’s resistance recovery time to 90 s. MWCNTs’s doping decreased the operating temperature of MoO 3 and showed good gas sensitivity at room temperature. Finally, the results reveal that MoO 3 /MWCNT-9 nanocomposite-based sensor can be fruitful in the field of NH 3 monitoring.
研究领域:
材料科学
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传感器技术
·
纳米科技
✓ 已验证
产品关联
DOI
高影响因子
Catalysis Science & Technology
·
2023
·Vol. 13
·期 5
·1325-1334
·
IF 5
Fengyun Su,Zhishuai Wang,Hailong Cao,Haiquan Xie,Wenguang Tu,Yonghao Xiao,Shukui Shi,Jiaqi Chen,Xiaoli Jin,Xin Ying Kong
Developing inexpensive co-catalysts for photo-thermal synergistic catalysis by artificially inducing active sites on non-noble metal compounds has drawn much attention recently. In this work, oxygen-deficient molybdenum oxide (MoO3−x) was in situ photodeposited on the surface of graphite-like carbon nitride (g-C3N4) to tremendously improve its photocatalytic activity for CO2 conversion. A series of characterization analyses divulged that the MoO3−x not only promoted the separation of photo-generated charge carriers, but also served as the active sites for the adsorption and activation of CO2 molecules. More importantly, the oxygen-vacancy defect sites of MoO3−x can trigger localized surface plasmon resonance (LSPR) that enables effective harnessing of near-infrared (NIR) photons, promoting photo-thermal synergistic catalytic conversion of CO2 into value-added fuels through full solar spectrum harnessing.
研究领域:
材料科学
·
环境科学
·
化学工程
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DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2025
·
IF 5.4
Haiyun Chen,Huihong Yang,Junling Ji,Xiyu He,Shenming Yang,Jing Chen
Noble metal modifications can promote surface interactions between target vapors and metal oxides. The surface effect plays a significant role in influencing the gas response of materials. The size range of Ag nanoparticles is about 20–30 nm, which are uniformly modified on the surface of α-MoO 3 . This was achieved through a chemical reduction method, where sodium borohydride served as the reducing agent and L-lysine was utilized as a stabilizer for the nanoparticles. The uniform coating of Ag nanoparticles on the α-MoO 3 is expected to enhance the gas-sensing properties of the composite material. The α-MoO 3 sensor based on 10 mol% AgNPs modification showed the highest response at 200 ℃, which was 1.6 and 1.66 times greater than the response of the pristine α-MoO 3 sensor when tested at concentrations of 5 and 10 ppm, respectively. For H 2 S levels of 10, 20, and 40 ppm, the times for response and recovery were merely 9/20 s, 7/24 s, and 9/25 s, respectively, showing fast response recovery characteristics. The enhancement of the gas-sensitive sensing mechanism for hydrogen sulfide can be explained in terms of the electronic sensitization and chemical sensitization of α-MoO 3 .
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Shuwen Zhu,Huiqing Fan,Yao Su,Yongbo Fan,Weijia Wang
Real-time monitoring of triethylamine (TEA) is essential for environmental safety and various applications in daily life. However, TEA gas sensors still encounter specific technical challenges, such as high operating temperatures and insufficient sensitivity. In this study, in order to reduce the operating temperature and improve sensitivity, WO 3 -MoO 3 (WMo) n-n heterojunctions were synthesized via calcination and subsequent solvothermal method, in which WO 3 tightly bound to the MoO 3 nanobelt surface. The resulting heterojunction demonstrated excellent TEA sensing performance. The optimized gas sensor achieved a high response of 627.28 to 20 ppm TEA at a low operating temperature (100 °C). In addition, the device exhibited strong selectivity and stability. These improvements in gas sensing performance were attributed to the formation of n-n heterojunction between MoO 3 and WO 3 , as well as the surface gas sensing reaction of oxygen species facilitated by oxygen vacancies at the heterojunction interface. This study can be applied to the design of novel n-n type metal oxide heterojunction materials for the application of low-temperature high-sensitivity TEA sensors.
研究领域:
材料科学
·
传感器技术
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）