CERAMICS INTERNATIONAL
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2025
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IF 5.6
Zhihua Zhao,Yang Dong,Xianghao Meng,Peijuan Wu,Jichao Wang
The present work focuses on developing a high-performance n-butanol detection system through heterojunction engineering of W 18 O 49 /CeO 2 nanocomposites, aiming to achieve superior sensitivity and selectivity in volatile organic compound monitoring. The solvothermal-mediated fabrication of CeO 2 nanocrystals served as the foundation for hierarchical assembly of the W 18 O 49 /CeO 2 heterostructured sensing layer. A comprehensive investigation was organized, encompassing discriminative selectivity analysis, durability testing, response profiling, response/recovery characterization under prolonged operational conditions. Experiment confirmed that the W 18 O 49 /CeO 2 heterojunction sensor achieved peak analytical performance at room temperature, exhibiting a response of 12.2 when exposed with 100 ppm n-butanol. In contrast, the pristine W 18 O 49 had a response of 2.6, and pristine CeO 2 showed negligible response. DFT results showed that the adsorption energy of n-butanol on the W 18 O 49 /CeO 2 composite was −1.092 eV, which was much stronger than that on pristine W 18 O 49 (−0.305 eV), indicating a more favorable adsorption process. Notably, the sensor achieved a detection threshold of 1 ppm n-butanol with a response magnitude reaching 23.5 %, indicating its capability for ultra-trace gas analysis. Collectively, these findings substantiate the W 18 O 49 /CeO 2 heterojunction architecture as a highly effective sensing platform for volatile organic compound (VOC) detection, with particular applicability to n-butanol gas monitoring in smart manufacturing environments. The superior sensing efficacy stems from the synergistic charge transfer mechanism at the heterointerface, validated by both experimental characterization and theoretical modeling.
研究领域:
材料科学
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气体传感技术
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纳米材料
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环境监测
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化学传感
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DOI
高影响因子
Discover Nano
·
2024
·Vol. 19
·期 1
·1-8
·
IF 0
Xiong Yuanpeng,Wu Bo,Lin Yuanzhi,Zhang Mingwen,Chen Jintian
In this study, a simple route for the synthesis of hierarchical W 18 O 49 assembled by nanowires is reported. The morphologies and formation of W 18 O 49 single-crystal could be controlled by changing the concentration of WCl 6 -ethanol solution. This synthesis strategy has the advantages that the hierarchical W 18 O 49 microspheres could be economic synthesized at 180 °C without adding additives. Furthermore, efficient optical absorption properties in ultraviolet, visible and near-infrared region were obtained for the hierarchical W 18 O 49 microspheres comparing with nanowires. These results will further promote the research of tungsten-based oxide nanomaterials. Graphical abstract
研究领域:
材料科学
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纳米技术
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DOI
PubMed
Journal of Materials Chemistry C
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2025
·
IF 5.1
Yongkang Zhu,Bin Li,Chenxu Li,Shouqin Tian
Recently, tungsten oxides have attracted extensive attention in the field of photochromic smart windows due to the naturally ultraviolet response, high luminous transmittance (Tlum), and substantial solar light modulation (ΔTsol). To promote its applications, limitations such as slow bleaching speed and poor reversibility need to be addressed urgently. Here, we proposed a Fe3+-doping mediated rapid electron transfer strategy to improve the overall photochromic performance of W18O49. By increasing the Fe3+ doping concentration, the bleaching speed of W18O49 films was significantly improved. Notably, films doped with 6 at% and 8 at% Fe3+ could be fully bleached within 5 min, with bleaching rates twice that of undoped films. This improvement is attributed to Fe3+ doping, which creates more oxygen vacancies in W18O49, facilitating the reduction of W6+ to W5+. Furthermore, the 6 at% Fe3+-doped W18O49 bilayer film exhibited excellent photochromic performance, with the ultrahigh Tlum and ΔTsol of 82.9% and 60.2%, respectively, fast photochromic speed (within 2 min), and nearly complete near-infrared light blocking in the colored state. These findings demonstrate the potential of Fe3+-doped W18O49 to significantly improve the performance of photochromic smart windows, offering promising avenues for energy-efficient building technologies.
研究领域:
材料科学
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能源技术
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光学工程
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
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IF 9.6
Jiaqi Tan,Bole Ma,Yanlin Qin,Xueqing Qiu,Liheng Chen
Bio-derived lignin nanospheres act as active interfacial regulators in W 18 O 49 . • Spectroscopy supports electronic and oxygen-vacancy-related defect modulation. • Physical-mixing controls support the importance of in situ interface formation. • W 18 O 49 /LNS shows 76.1 ± 0.8% modulation, 7 ± 1 s bleaching, and improved retention. Designing robust organic-inorganic interfaces is essential for resolving the kinetics-stability trade-off in electrochromic (EC) smart-window materials. Here, bio-derived lignin nanospheres (LNS) are used as active interfacial regulators for defect-rich W 18 O 49 nanowires. Coordination-associated interactions between LNS and W 18 O 49 are accompanied by changes in the local electronic environment and oxygen-vacancy-related defect states. The optimized W 18 O 49 /LNS film delivers an optical modulation of 76.1 ± 0.8% at 654 nm, a coloration efficiency of 31.7 ± 1.1 cm 2 C −1 , and a bleaching time of 7 ± 1 s, together with improved cycling retention. Semi-quantitative W L 3 -edge X-ray absorption analysis indicates a decrease in the estimated average W oxidation state from 3.29 to 2.89. Operando FT-IR spectroscopy and DFT calculations reveal bias-induced changes in the interfacial redox and solvation environment, while ESR and electrochemical kinetic analyses support defect modulation and an increased surface-controlled contribution. These findings establish bio-derived interfacial regulation as a promising strategy for defect-rich functional oxide nanocomposites. Download: Download high-res image (165KB) Download: Download full-size image
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PubMed
高影响因子
FUEL
·
2026
·
IF 7.5
Wenjing Wang,Mingnv Guo,Yulin Chen,Yuxuan Guo,Jiahao Liu,Ziqi Wang,Zhongqing Yang
A W 18 O 49 /Bi 2 MoO 6 heterojunction photocatalyst with favorable photothermocatalytic activity was constructed in this study. Its physicochemical properties were characterized and analyzed, and its photothermocatalytic performance was evaluated through catalytic activity tests conducted under full solar spectrum conditions. The results show that W 18 O 49 /Bi 2 MoO 6 exhibits superior photothermal catalytic activity compared to single Bi 2 MoO 6 and W 18 O 49 . Among them, the W 18 O 49 /Bi 2 MoO 6 heterojunction with a mass ratio of 7 % has the highest CO yield, reaching 140.03 µmol/g, which is 7.5 times higher than that of pure W 18 O 49 . The interaction between W 18 O 49 and Bi 2 MoO 6 endows W 18 O 49 /Bi 2 MoO 6 with good photogenerated carrier separation and migration efficiency, as well as photothermal catalytic activity. This provides ideas for designing photocatalysts with efficient photothermal catalytic CO 2 reduction.
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高影响因子
Results in Surfaces and Interfaces
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2021
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IF 0
Wenli Li,Jiangbo Sun,Jie Zhang,Olatoye Abiola Ganiyat,Yanbin Cui
Electrochromic smart devices with tunable optical properties are on the verge of replacing the conventional windows and curtains. The preparation and commercialization of electrochromic materials are majorly based on vapor phase deposition which is limited by high price and difficult production processes. Here, atomizing spray deposition process is developed for the production of large area, low-cost electrochromic film. W 18 O 49 , a promising inorganic EC material, was used to prepare EC film on indium tin oxide-polyethylene terephthalate (ITO-PET) flexible substrate. Poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) was also printed on ITO-PET substrate to improve the conductivity of substrate and the adhesion between W 18 O 49 and substrate. The experimental results showed that the transmittance modulation ( Δ T) of W 18 O 49 /PEDOT:PSS/ITO-PET flexible EC film was 63.34% corresponding to a wavelength of 633 nm. The coloring and bleaching response times of W 18 O 49 /PEDOT:PSS/ITO-PET EC film were 18.7 s and 23.2 s, respectively. Furthermore, the as-prepared flexible EC film by atomizing spray deposition method had excellent cyclic stability, and the optical transmittance of the film still retains a high value (70%) after continuous coloring and bleaching for 6000 s.
研究领域:
材料科学
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纳米技术
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光电功能材料
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DOI
Science China-Materials
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2021
·Vol. 64
·期 6
·1495-1506
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IF 8.273
Tian Guangming,Zhu Guangming,Xu Shuogui,Li Ming,Tian Renjie
Shape memory materials possess programmable complex and large deformations towards external stimuli, which are particularly essential for their potential applications. For the transformation of planar two-dimensional (2D) structures into complex 3D structures, the design of asymmetric or bilayer thin sheets is usually required. In this paper, we propose a facile strategy to achieve these complex 3D structures that can be transformed to various pre-determined shapes sequentially by laser-triggered site-specific deformations. The response of shape memory polycaprolactone (PCL) to laser is realized by physically doping W 18 O 49 nanowires into the cross-linked PCL diacrylate matrix. When irradiated by 98 mW cm −2 laser, the pre-stretched PCL/W 18 O 49 film shows an out-of-plane bending deformation due to the temperature gradient and single-domain orientation on the thickness between the upper layer and lower layer. The bending rates and amplitudes of the film can be tailored by adjusting the parameters of irradiation time, the film thickness as well as the pre-stretch strain. Remarkably, the pre-stretched film can automatically bend in more intricate complex deformations by integration with kirigami cuts in planar. Finally, we demonstrate that by activating the dynamic transesterification reaction within the same film, it can also achieve the 2D-to-3D transformations. With these decent features, this kind of novel PCL//W 18 O 49 film shows great potential in the field of biomedical devices or soft robotics.
研究领域:
材料科学
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智能材料
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软体机器人
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生物医学工程
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响应性聚合物
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2019
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IF 4.175
Guojuan Hai,Jianfeng Huang,Yanni Jie,Liyun Cao,Long Wang,Changle Fu,Ting Xiao,Mengfan Niu,Liangliang Feng
Crystal facets-orientation growth plays a crucial role in determining photocatalytic performance. Herein, a series of (010) facets-oriented W 18 O 49 nanowires were controllably synthesized by a facile solvothermal alcoholysis method using octadecylamine as the crystal growth capping agent in order to regulate the specific growth behavior and unveil its correlation with photocatalytic performance. The properties of the prepared W 18 O 49 nanowires, such as surface oxygen vacancies , light absorption and the band gap size, as well as the surface charge carriers separation rate, could be well-modulated via tailoring the preferred orientation growth. The W 18 O 49 nanowire with the strongest (010)-faceted orientation demonstrated the best photocatalytic degradation of Methyl Orange under ultraviolet light irradiation (up to 100% within 15 min) and visible light irradiation (up to 91% within 95 min). These interesting findings not only help us to gain an in-depth understanding of the relationship between the preferred orientation growth and the photocatalytic performance but also have the potential to open up an innovative route/protocols for the preparation of crystal facets-oriented metal oxides for highly efficient photocatalysis .
研究领域:
材料科学
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化学
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DOI
高影响因子
Materials Today Communications
·
2024
·
IF 3.7
Muhammad Usman Amin,Haichao Zhai,Yupeng Yuan,Liteng Ren,Chuhong Zhu
Surface-enhanced Raman scattering (SERS) has gained significant attention in various fields, including biomedical diagnostics, environmental monitoring, and food safety. This technique offers many advantages such as label-free detection and the ability to detect analytes at low concentrations. In this study, we present a variety of tungsten oxide (W 18 O 49 ) microstructures as solid SERS substrates using various solvents realized by a simple hydrothermal approach. Among them, the well-defined sea urchin-like W 18 O 49 microstructures support greater light scattering and confinement to enhance the SERS signal when compared to other W 18 O 49 structures. The surface of well-defined sea urchin-like W 18 O 49 microstructures was then modified with uniformly distributed silver nanoparticles (Ag NPs). The combination of the unique morphology of the Ag and sea urchin-like W 18 O 49 microstructures (W 18 O 49 @Ag) led to improved detection capabilities for analytes such as rhodamine 6 G (R6G) and thiram molecules. The SERS enhancement factor (EF) of sea urchin-like W 18 O 49 @Ag microstructures was estimated to be as high as 1.53×10 6 with the lowest detectable concentrations of 1 nM and 1 μM for R6G and thiram, respectively. Thus, the well-defined sea urchin-like W 18 O 49 @Ag microstructures are excellent choice to replace the pure noble metal SERS substrates in the fields of rapid detection and trace analysis due to their high sensitivity, repeatability, and long-term stability.
研究领域:
材料科学
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分析化学
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生物医学
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DOI
高影响因子
Nano Materials Science
·
2025
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IF 17.9
Zehong Xu,Weilong Liu,Wenhui Yue,Mengyuan Li,Shiqun Wu,Lingzhi Wang,Yikai Xu,Chunchun Li,Ziwei Ye,Jinlong Zhang
WO 2.72 , with its broad localized surface plasmon resonance (LSPR) response, holds significant potential for harvesting visible and near-infrared (NIR) solar radiation. However, due to its relatively low free electron density, its LSPR excitation intensity is inherently weaker compared to conventional plasmonic metals. In this study, we enhanced the LSPR response of WO 2.72 by coupling it with Au nanoparticles. Upon LSPR excitation, this hybrid structure enables efficient generation of hot electrons, which can be extracted by the surface-deposited CdS layer to drive hydrogen evolution reactions. Importantly, the incorporation of the CdS layer also leads to the formation of an S-scheme heterojunction between CdS and WO 2.72 due to their well-matched band structures. The formation of S-scheme heterojunction not only promotes more efficient UV-excited generation of photo electrons in WO 2.72 and CdS, but also prevents the mutual cancellation of hot electrons and photogenerated electrons due to interfacial band bending. This synergy ensures efficient generation and utilization of both hot electrons and photogenerated electrons, giving rise to an excellent hydrogen evolution rate of 165.5 mmol g −1 h −1 under the irradiation of the stimulated sunlight.
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高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2026
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IF 8.3
Haoshuang Zhang,Tianshuang Wang,Liupeng Zhao,Xueying Kou,Peng Sun,Geyu Lu
The detection of flammable and explosive methanol (CH 3 OH) at room temperature remains challenging for semiconductor gas sensors, severely restricting their practical applications due to low sensitivity, high detection limit, and poor selectivity. Herein, we report a UV-activated gas sensor based on Pd-doped W 18 O 49 that exhibits high response to CH 3 OH along with rapid response/recovery times (169 s/346 s), and low detection limit (100 ppb), representing one of the best performances reported to date for room-temperature CH 3 OH sensing. The enhanced room-temperature sensing performance under UV illumination is attributed to the effective electron-transport pathway within nanowires, doping-induced energy band structure optimization, high adsorption capacity on defect-rich surface, and facilitated CH 3 OH dehydrogenation, as verified by density functional theory (DFT) calculations and comprehensive optical and electrical characterizations. To demonstrate practical application, a portable sensing and monitoring system was developed, enabling successful real-time indoor air quality assessment with an alarm function. This work provides a viable and efficient solution for room-temperature volatile organic compounds monitoring.
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DOI
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·10062
·
IF 15.7
Tian Dehua,Liang Yinlan,Zheng Zhaoke,Mao Liang,Cai Xiaoyan,Chen Yizhen,Wang Xiangxian,Liu Xiaolei,Li Juan,Wang Zeyan,Xue Can,Li Baojun,Lou Zaizhu
Photocatalytic methanol dehydration to dimethyl ether (DME) offers a sustainable alternative to energy-intensive thermocatalysis, yet its practical application remains constrained by low efficiency. Herein, we designed Ni-doped plasmonic W 18 O 49 nanowires that synergistically integrates low-coordinated W and Ni dual active sites with surface plasmon resonance for enhanced photocatalytic performance. The synergistic effect of W and Ni dual sites is amplified by plasmonic electron oscillations to facilitate the C-O bond cleavage and C-O-C coupling, driving efficient methanol-to-DME conversion. The optimized Ni 0.66 -W 18 O 49 achieves a DME yield of 133.7 ± 3.3 mmol g -1 h -1 with 98.7% selectivity under 400 mW cm -2 illumination. The versatility of the catalyst is demonstrated through C 2+ alcohol dehydration, achieving 40-80% rate enhancements and a recorded isobutylene yield of 3.7 mol g -1 h -1 . This study highlights the huge potential of rationally engineered plasmonic semiconductors in solar-driven chemical synthesis, particularly for C-O bond activation and coupling reactions.
研究领域:
光催化
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材料科学
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等离激元学
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可持续化学
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化学合成
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PubMed
高影响因子
危险品化学品经营许可证（带存储）