JOURNAL OF POWER SOURCES
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2025
·
IF 7.9
Yi Wang,Zilong Zhang,Ze Wang,Yan Zuo,Haichuan Zhou,Dongya Sun,Yuechan Li,Yujie Yan,Tong Feng,An Xie
Electrochromic devices have garnered significant interest due to their great potential in intelligent multifunctional electrochromic energy storage devices (EESDs) and smart electronics. Tungsten oxide (WO₃) exhibits both electrochromic and pseudocapacitive characteristics, and combining these two functionalities into a single device with enhanced overall performance is a popular research topic. However, synthesizing high-performance WO₃ electrochromic films with an efficient and simple method remains a challenge. Herein, a one-step fabrication strategy is developed for the in-situ growth of hexagonal WO₃ films on FTO substrates. This strategy employs a low-temperature hydrothermal method, involving xylitol as a self-seeding agent and cesium sulfate as a capping agent. The synergistic effect of the self-seeding and capping agents results in highly efficient WO₃ films with strong substrate adhesion and a large optical modulation (86.8 %). An EESD is assembled using the WO₃ film as the working electrode and a PB film as the counter electrode. The EESD demonstrates fast bleaching/coloration switching times and a high coloration efficiency of 104.8 cm 2 C⁻ 1 . Additionally, the EESD shows a distinct and reversible color transition from transparent to dark blue, accompanied by a change in optical transmittance of 74.45 %.
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CyTA-Journal of Food
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2025
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IF 1.7
Han Zhao,Xiaohui Duan,Siqi Xie,Lili Cheng,Fei Wang,Wenjuan Xu,Yaolei Zhang,Weiyi Zhang,Cheng Zhao
Listeria monocytogenes is a foodborne pathogenic bacterium that can survive under a wide range of temperature and pH conditions, with a mortality rate of up to 20% −30%. One emerging and validated method of indirectly assessing Listeria monocytogenes in food is detecting 3-hydroxy-2-butanone gas. In this study, WO3 nanoflowers (a diameter of 2.8 µm) and two different hierarchical structures of WO3 were successfully synthesized. XRD, BET, SEM, and TEM were applied to characterize their morphology, microstructure, catalytic structure, and specific surface area. For assessing their gas sensing performances toward 3-hydroxy-2-butanone, a series of gas sensitivity indicators were purposefully measured. The results indicated that WO3 nanoflowers had the best gas sensing performance including high sensitivity (81 @ 20 ppm), rapid response-recovery time (4 s/9 s), low LOD (1 ppm) and good stability. Moreover, by analysing the various characterization results of these materials, the sensitivity mechanism was explained in detail as well.
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RESEARCH ON CHEMICAL INTERMEDIATES
·
2017
·Vol. 43
·期 7
·3961-3974
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IF 1.369
Jiao Yinchun,Zhu Man,Deng Renjie,Jian Jian,Yin Yi,You Kuiyi
With the increase in environmental awareness, developing a highly efficient and environmentally benign nitration process has very important academic and applied industrial values in the synthesis of nitro-compounds. Towards this goal, we have developed an efficient and environmentally friendly approach for solvent-free liquid phase nitration of toluene by employing NO 2 as a nitrating agent and sulfated SO 4
2− /WO 3 as a catalyst replacing traditional nitric acid–sulfuric acid under mild conditions. The results indicate that SO 4
2− /WO 3 as an effective and eco-friendly catalyst exhibits excellent catalytic activity and reusability for the nitration of toluene with NO 2 . In addition, the possible pathway for liquid phase nitration of toluene with NO 2 over sulfated SO 4
2− /WO 3 catalyst was suggested. The present method makes this nitration process safe and environmentally friendly, and has the potential to enable a sustainable production of nitro-compounds from the liquid phase nitration of aromatic hydrocarbon with NO 2 in industrial applications.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
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IF 19.7
Youheng Yao,Gaoxu Han,Yixuan Yao,Chuanjin Wang,Junshu Wu,Wenyuan Zhou,Yongli Li,Jinshu Wang
A TiCl 3 -based route enables H insertion and dispersed Ti sites on WO 3 photoanode. • Dispersed Ti sites favor secondary-hydroxyl activation and DHA formation. • H insertion suppresses free •OH species and mitigates DHA overoxidation. • (H,Ti)/WO 3 achieves 71.9% DHA selectivity and 264.5 mmol m −2 h −1 productivity. Selective photoelectrochemical oxidation of glycerol to dihydroxyacetone (DHA) offers a compelling strategy for integrating solar energy conversion with biomass valorization. However, efficient DHA accumulation remains challenging because two key issues are often underemphasized: the atomic level control of glycerol adsorption geometry for secondary-hydroxyl oxidation, and the suppression of radical mediated overoxidation of the formed DHA. Herein, we report a H, Ti-dual-modified WO 3 photoanode (H,Ti)/WO 3 that enables highly selective glycerol oxidation to DHA via cooperative interfacial pathway regulation. The (H,Ti)/WO 3 photoanode achieves a DHA selectivity of 71.9%—a sharp rise from 35.7% for WO 3 , and a DHA production rate of 264.5 mmol m −2 h −1 , roughly 5 times that of the unmodified counterpart. Mechanistically, highly dispersed Ti sites enhance adsorption of the secondary hydroxyl group of glycerol, directing the pathway toward DHA via two‑electron transfer. H‑insertion, in contrast, shifting hydroxyl chemistry away from free •OH mediated deep oxidation toward more surface-bound hydroxyl species and thereby suppressing DHA overoxidation. With this dual-pronged strategy, our work provides new insights into the selective formation and stable accumulation of DHA in biomass photoelectrochemical systems. Download: Download high-res image (146KB) Download: Download full-size image
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SENSORS AND ACTUATORS B-CHEMICAL
·
2026
·
IF 8.3
Shixin Ma,Zhihua Zhao,Chen Chen,Zhuo Chen
1-Octen-3-ol is a characteristic volatile organic compound released from moldy wheat. Therefore, the development of high-performance gas sensors for 1-octen-3-ol detection is of great significance for ensuring grain safety by enabling real-time monitoring of wheat quality. However, substantial challenges remain, including poor selectivity and insufficient stability. To address these limitations, this study designed and successfully synthesized a three-dimensional nest-like Tungsten trioxide (WO 3 ) structure decorated with FeCo nanoalloys. By modulating the loading amount of the iron (Fe) cobalt (Co) alloy, we achieved precise tuning of surface oxygen vacancies and facilitated efficient electron transfer within the nanocomposite, resulting in a significantly enhanced gas response. The optimized 1.5FeCo@WO 3 sensor exhibited a high response value of 12.68 toward 100 ppm 1-octen-3-ol, along with superior selectivity and excellent long-term stability. Systematic material characterizations, including scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Brunauer-Emmett-Teller (BET) analyses, confirmed that the composite possesses a high specific surface area, abundant oxygen vacancies, and a robust interfacial electronic interaction between the FeCo alloy and the WO 3 matrix. Furthermore, density functional theory calculations were integrated into the mechanistic analysis. Consequently, this work yields a promising sensor candidate for the early warning of wheat diseases and proposes a material design strategy for developing economical, high-sensitivity gas sensors for agricultural applications.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Shuwen Zhu,Huiqing Fan,Lin Lei,Yongbo Fan,Weijia Wang
Developing triethylamine (TEA) sensors using metal oxide semiconductors (MOS) presents challenges such as achieving high sensitivity, low operating temperatures, and reliable detection of trace TEA. In this study, a novel two-step solvothermal synthesis strategy was developed for the sequential fabrication of δ-MnO 2 nanosheets and δ-MnO 2 /WO 3 (WMn) heterojunction composites. The resulting WMn heterostructure features a unique morphology, where δ-MnO 2 nanosheets are encapsulated within a WO 3 matrix, forming well-defined layered interfaces and abundant active sites. This tailored structure significantly enhances the TEA sensing performance. In particularly, WMn1 sensor achieves an ultrahigh response of 515.37 to 20 ppm TEA at 140 °C. The sensor also exhibits an exceptionally low detection limit of 15.91 ppb, along with rapid response/recovery kinetics and long-term stability. The superior performance is attributed to the formation of n–p heterojunction and the synergistic effects of electronic and chemical sensitization, which optimize charge carrier dynamics, reduce interfacial resistance, and enhance surface reactivity. By focusing on interface engineering in heterojunction-based gas sensors, this study contributes to the strategic design of high-performance sensing materials, with potential applications in environmental monitoring and industrial safety.
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JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2025
·
IF 4.7
Mingzhu Yuan,Lei Jiang,Sitian Mao,Wenhong Zhou,Xiangang Lin,Yupeng Yuan
The efficient exploitation of visible light while optimizing the charge migration of the photocatalysts is a critical strategy to achieve a significant enhancement of solar energy conversion efficiency. Herein, a g-C 3 N 4 /WO 3 (P/W-x%) Z-scheme heterojunction photocatalyst was successfully engineered by incorporating unique WO 3 nanocubes into g-C 3 N 4 nanosheets with n-π* electronic transition (PCN). Under visible light irradiation, the optimized P/W-2 % presents excellent photocatalytic activity with the H 2 production rate of 3.82 mmol h −1 g −1 , which is 13.2 and 3.9 times higher than that of BCN and PCN, respectively. The excellent photocatalytic H 2 production performance is attributed to the n-π* electronic transition of the lone electron of the N atoms in g-C 3 N 4 , which enhances the visible light trapping ability. More importantly, In-situ X-ray photoelectron spectroscopy (ISI-XPS) measurement confirms the transport of photo-generated electrons from WO 3 nanocubes to PCN nanosheets. Consequently, a Z-scheme P/W-2 % heterojunction is proposed based on the flow direction of photogenerated electrons in combination with the energy band structure. It not only promotes the rapid separation and migration of photogenerated carriers, but also enhances the reduction capability. This study provides a valuable design idea to enhance the performance of photocatalytic H 2 production via light absorption and charge dynamics.
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APPLIED CATALYSIS A-GENERAL
·
2022
·
IF 5.723
Ke Zhang,Yijie Su,Guiyun Wang,Daolai Sun,Satoshi Sato
Vapor-phase dehydration of 1,2-propanediol to form propanal was performed over H 3 PO 4 /SiO 2 catalyst with Brønsted acid sites, which exhibited a high activity for the formation of propanal , and the successive modification of H 3 PO 4 /SiO 2 by WO 3 and Ag could further improve both the activity and the stability of catalysts. The H 3 PO 4 /SiO 2 catalyst modified by both Ag and WO 3 could provide a propanal selectivity of 94.6% with a complete conversion of 1,2-propanediol in an H 2 flow at 250 °C and a weight hourly space velocity of 2.70 h −1 . Brønsted acid sites were effective for the formation of propanal, and the doping of WO 3 could significantly increase the amount of Brønsted acid sites, resulting in the improvement of catalytic activity. On the other hand, the doping of Ag could protect the Brønsted acid sites and inhibit coke deposition on the catalyst surface in an H 2 atmosphere, leading to the improvement of catalyst stability.
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JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2026
·
IF 4.4
Shaoqing Geng,Xuehui Zhao
Membrane separation technology is a selective physical separation method that is widely used in the fields of wastewater reuse and recycling. However, its separation effect on small molecules in pollutants is not ideal. In this study, the negative pressure filtration method was adopted, combining membrane separation with photocatalytic technology to prepare a sandwich-structured WO 3 /g-C 3 N 4 /CNTs curtain hollow fiber photocatalytic membrane module with. By changing the experimental conditions, membrane anti-pollution property, stability and self-cleaning ability of the membrane module were studied under visible light irradiation. Through characterizations, it was found that when WCN/CNTs = 2:1 and pH = 12, the degradation rate of MB by the membrane module after 4 h of using was still 89.47%, which was 42.60 times higher than that of pure PVDF membrane module, and the water flux recovery rate (FRR) was as high as 98.21%. Stability experiments show that the degradation rate and flux of this membrane module remain stable at various pH levels, and the FRR values are all above 96.80%, while the FRR value of pure PVDF membrane modules is only 72.94%. This study provides a new idea for the preparation of semiconductor-based composite photocatalytic membranes with high self-cleaning ability and photocatalytic activity in the field of wastewater treatment.
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DALTON TRANSACTIONS
·
2023
·Vol. 52
·期 19
·6284-6289
·
IF 4
Ning Zhang,Huili Li,Bo Yao,Shiyan Liu,Jun Ren,Yawei Wang,Zebo Fang,Rong Wu,Shunhang Wei
Construction of a heterojunction between quantum dots and TiO2 nanowire arrays via electrostatic self-assembly is rarely reported. In this work, mercury lamp irradiation was used to change the surface potential of WO3 quantum dots and TiO2 nanowire arrays, resulting in WO3 quantum dots tightly attached on the surface of TiO2 nanowire through electrostatic self-assembly. Photoelectrochemical measurements showed that the WO3 quantum dots formed a type II heterojunction with the TiO2 nanowire arrays rather than serving as carrier-trapping sites. In the self-assembly system, the TiO2 nanowire arrays provide a charge-transfer channel for the WO3 quantum dots, greatly improving the contribution of the WO3 quantum dots to the photocurrent. Quantitative calculations showed that the improvement of the bulk carrier-separation efficiency was the reason for the enhanced photoelectrochemical performance of the self-assembled system. The photocurrent density of the optical self-assembled system at 1.23 V (vs. RHE) was ∼5.5 times as high as that of the TiO2 nanowire arrays. More importantly, the self-assembled system exhibited excellent photoelectrochemical stability.
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CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Bingbing Cui,Chuanpan Guo,Zhihong Zhang,Guodong Fu
Photochromic hydrogels, which are dynamic in response to external light stimuli, have aroused increasing attentions due to their potential applications in intelligent devices. However, achieving excellent photochromic activity with fast photoresponse and self-bleaching rates still remains a huge challenge. Herein, a novel photochromic junction of zinc-based metal–organic framework (Zn-MOF) and tungsten oxide (WO 3 ) was established as photochromic unit and embraced within hydrogel of poly(acrylic acid- co -polyethylene glycol) [P(AA/PEG)] via the interaction of ionic and hydrogen bonding (denoted as P(AA/PEG)-Zn-MOF@WO 3 ), following by exploiting as self-bleaching photochromic agent for assembling UV-irradiated smart rewritable device. The photoinduced electrons can be efficiently separated and migrated from Zn-MOF to WO 3 in the Zn-MOF@WO 3 junction after UV irradiation, thereby increasing the coloration degree. Due to the enhanced fast response to light stimuli, the P(AA/PEG)-Zn-MOF@WO 3 -3 hydrogel prepared using 200 mg Zn-MOF demonstrated the fast responsive photochromic behavior of 10 s under UV lamp illumination and the self-fading process could be easily performed in room condition (within 20 min). Moreover, the coloration degree of P(AA/PEG)-Zn-MOF@WO 3 -3 photochromic hydrogel was precisely controlled and repeated by changing the UV irradiation time. Consequently, the fast photochromic and self-fading properties of P(AA/PEG)-Zn-MOF@WO 3 -3 afforded rapid and easy ‘‘writing’’ and “erasing” abilities. The present work proposes a new way for the construction of the reversibly responsive photochromic hydrogel with smart optical materials, further broadening their applications in intelligence sensors, smart windows, and flexible memory devices.
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Nanoscale
·
2023
·Vol. 15
·期 6
·2871-2881
·
IF 6.7
Shuanghong Liu,Siyu Xia,Jiefei Wang,Xitong Ren,Sudi Chen,Yong Zhong,Feng Bai
The direct Z-scheme photocatalytic system can effectively improve the separation efficiency of photogenerated carriers through the photosynthesis-based photocarrier transport model. In this study, zinc porphyrin-assembled nanorods (ZnTPyP) and WO3 nanorods’ nanorod-on-nanorod heterojunctions (ZnTPyP/WO3) were successfully prepared through a simple modified acid–base neutralization micelle-confined assembly method using WO3 nanorods as the nucleation template and ZnTPyP as building blocks. ZnTPyP achieved a controllable assembly onto WO3 nanorods through N–W coordination. ZnTPyP/WO3 nanorod-on-nanorod heterojunctions exhibited a structure-dependent photocatalytic performance for hydrogen production. The ZnTPyP/WO3 nanorod-on-nanorod heterojunctions exhibited a optimal hydrogen production rate (74.53 mmol g−1 h−1) using Pt as the co-catalyst, which was 2.64 times that of the ZnTPyP self-assembled nanorods. The improvement in the photocatalytic hydrogen production efficiency could be mainly attributed to the direct Z-scheme electron-transfer mechanism from WO3 to ZnTPyP. This is the first report of an approach using porphyrin-assembled nanostructures to construct organic–inorganic Z-scheme photocatalysts. This study offers valuable information for preparing new efficient photocatalysts based on organic supramolecular orderly aggregate materials.
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