CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Yan-nan Wang,Jingfeng Li,Zhiqiang Yang,Zhenyu Yuan,Jin Li,Fanli Meng
In this study, a hollow malposition structure (HMS) optical fiber 2-butanone gas sensor based on double-layer WO 3 @CQDs porous film is proposed, and realizes the ppb detection of 2-butanone gas at room temperature. The HMS can excite the evanescent field and sense the gas adsorption on the fiber surface. The experimental results show sensitivity of 3.09 pm/ppm for this HMS optical fiber gas sensor based on double-layered WO 3 @CQDs porous film, which is 6.05 times higher than that of the sensor coated with single-layer WO 3 @CQDs porous film. In addition, a limit of detection (LOD) reaches 500 ppb. The response time is 11.7 s and the recovery time is 5.72 s. Density functional theory (DFT) results show that the modification of CQDs improves the adsorption capacity of WO 3 @CQDs for 2-butanone gas molecules and changes the refractive index of the material. The sensor has the advantages of small volume, high sensitivity and a low LOD, which is of great significance for the detection of trace 2-butanone gas.
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 5.6
Qi Cheng,Ye Yang,Chengzhang Chen,Xinyu Ji,Ying Du,Jia Li,Weijie Song
In order to improve the electrochromic properties, especially, the long-term cyclic stability, for the sputtered WO 3 film, various film annealing treatments including the substrate heating during film deposition and also the post-treatment in muffle furnace or in rapid thermal annealing (RTA) facility are usually adopted. However, these traditional annealing techniques have the obvious limitations in high cost, poor operational convenience and low thermal utilization efficiency. Herein, an in-situ electrical annealing initiated by the intrinsically attached ITO transparent electrode is proposed to directly anneal the contacted room-temperature-sputtered Nb-doped WO 3 (WNO) electrochromic film. After a systematic exploration on the in-situ electrical annealing parameters, the perfect temperature and time are screened out as 250 °C and 10 min, respectively. The annealed film at this point owns an outstanding cyclic stability, i.e., after 3000 electrochemical cycles, the light modulation keeps almost unchanged from 60.5 % to 59.9 %. The much denser and more robust microstructure resulted from the in-situ electrical annealing is responsible for such a higher electrochemically cyclic stability. Moreover, the laminated electrochromic device made of the in-situ electrically annealed WNO film is found to operate well. This work firstly demonstrates that the in-situ electrical annealing is practically viable for the treatment of room-temperature-sputtered electrochromic film.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Research and Technology-JMR&T
·
2022
·
IF 6.267
jialong Kang,Zhenyun Tian,Dapeng Zhong
The abundant metal Ti is a high-quality metal with lightweight, high strength, and corrosion resistance. However, due to its harsh preparation conditions, the price remains high, so titanium metal's simple and effective products have become a challenge for the world's scientific research community. In this paper, by calculating the oxygen potential of Ti–O, Ti–H, and Ti–H–O solid solutions, the oxygen potential of Ti–H–O was obtained when the oxygen content was 0.03 and 0.009. As H 2 enters the Ti–O lattice, the oxygen potential of the Ti–H–O system increases with the increase of H content. Thermodynamic calculations showed that introducing hydrogen effectively destroyed the stability of Ti–O solid solutions. At the same time, this paper uses a magnesiothermic as a reducing agent. To verify the feasibility of the above thermodynamics, reduce the spent V 2 O 5 –WO 3 /TiO 2 catalyst (Ti > 80 wt%) of titanium-rich materials in a hydrogen atmosphere. Finally, the spent V 2 O5–WO 3 /TiO 2 catalyst was reduced at 750 °C for 8–24 h to obtain TiH 2 powder with an oxygen content of 0.9 wt%.
✓ 已验证
产品关联
DOI
高影响因子
ChemCatChem
·
2021
·Vol. 13
·期 7
·1834-1846
·
IF 5.686
Ruihuan Jiang,Shaomian Liu,Liang Li,Yongjun Ji,Huifang Li,Xiangfeng Guo,Lihua Jia,Ziyi Zhong,Fabing Su
Graphical Single Ir atoms : In the CO+NO reaction, the catalyst with single-sited Ir atoms (0.28 wt %) anchored on a mesoporous WO 3 (Ir 1 /mesoporous-WO 3 ) showed much higher NO conversion and N 2 selectivity under oxygen-rich conditions than the catalysts supported with Ir nanoparticles on the same catalyst support (Ir NPs/mesoporous-WO 3 ) and on a non-mesoporous WO 3 (Ir/non-mesoporous-WO 3 ). Under oxygen-rich conditions, achieving a selective and efficient reduction of NO by CO is always challenging. Here, we report the synthesis of the catalyst consisting of single Ir atoms anchored on mesoporous WO 3 (denoted as Ir 1 /m-WO 3 ) using a facile template method followed by wet impregnation. X-ray diffraction and transmission electron microscope studies indicated that the Ir atoms were distributed uniformly on the internal surface of m-WO 3 . When tested for the reduction of NO by CO, the Ir 1 /m-WO 3 catalyst with a low Ir loading of 0.28 wt % exhibited excellent catalytic performance in the presence of 2 vol % O 2 (volume ratio of CO to O 2 being 1 : 10), achieving a NO conversion of 73 % and N 2 selectivity of 100 % at 350 °C. In particular, its turnover frequency (TOF) value reached 0.30 s −1 at 200 °C, which is six times higher than that of the catalyst with Ir nanoparticles supported on mesoporous WO 3 (0.05 s −1 ). The superior catalytic performance of Ir 1 /m-WO 3 is attributed to the formation of the isolated Ir atoms and the more newly generated Ir-WO 3 interfaces that can promote the adsorption and activation of NO, and the presence of accessible mesopores in m-WO 3 that facilitates the mass transfer of NO and CO. This study brings a new fundamental understanding of active sites in Ir-based catalysts for the CO+NO reaction and provides a new way to the design and synthesis of single-atom catalysts, especially precious metal catalysts for emissions control.
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2018
·
IF 3.927
Kané Rabé,Lifen Liu,Noor Ahmed Nahyoon,Yizhen Zhang,Ahmed Mahmoud Idris
A visible-light Z-scheme g-C 3 N 4 /Fe 0 /TiO 2 anodic catalyst was tested with cathodic WO 3 in photocatalytic Fuel Cell (PFC) that efficiently degrades berberine chloride and simultaneously generate electricity at pH 2,5,7 and 13. The Stainless-steel mesh electrodes loaded with prepared catalyst were irradiated by visible-light in single chamber PFC. The highest removal of berberine Chloride, cell voltage, and power density were 91%, 0.8 V, and 16.4 W/m 2 at a current density of 2.02 mA/cm 2 , respectively after 90 min irradiation in 0.05 M Na 2 SO 4 electrolyte, with 10 Ω external resistance. The impacts of pH and initial concentration of BEC on photocatalytic degradation and cell voltage were evaluated. The cell current density is enhanced while the photocatalyst activity increased. The constructed PFC maintained high-performance after 5 uses. Its use in degrading wide spectrum refractory pollutants and generate electricity is expected for the proved catalyst design, paired electrodes and high PFC performance for practical wastewater treatment.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2024
·
IF 4
Liruhua Zhang,Zhixiang Chen,Yuxiang Wu,Tao Yang,Ling Bing Kong,Qingxia Liu
The advancement of efficient photocatalysts is crucial for the conversion of carbon dioxide (CO 2 ) into chemical fuels and wastewater treatment, due to the significant role in promoting energy sustainability and environmental remediation. In this work, we synthesized iron (II) phthalocyanine modified oxygen vacancy-rich (FePc/OVs-rich WO 3 ) photocatalyst with an S-scheme structure through electrospinning-calcination and electrostatic self-assembly. The optimized FePc/WO 3 –2 nanocomposite demonstrated approximately 3.69-fold enhancement in photoactivity for the conversion of CO 2 to CO and CH 4 , as compared with the OVs-rich WO 3 nanofibers. Furthermore, the FePc/WO 3 –2 catalyst demonstrated outstanding efficacy in activating peroxymonosulfate (PMS) for the degradation of tetracycline hydrochloride (TC), achieving an efficiency of 84.9 % within 60 min and a rate constant of 0.924 h −1 . The improved photocatalytic performance is attributed to the prolonged absorption of visible light, enhanced charge separation and the increased density of catalytic reaction sites. The enhancement in charge separation is predominantly linked to the unique S-scheme transfer process, which is characterized by non-overlapping optical absorption, in-situ X-ray photoelectron spectroscopy (XPS) and density functional theory (DFT). This process is further facilitated by the catalytic activity of central Fe 2+ in FePc for the degradation of TC. The π-π interaction between FePc and the WO 3 nanofibers, which have a high concentration of oxygen vacancies, resulted in a fast electron transfer pathway, allowing efficient transport of photoelectrons. This paper comprehensively examines the advancement of high-performance S-scheme FePc/OVs-rich WO 3 photocatalysts for the photocatalytic reduction of CO 2 and degradation of tetracycline through the photo-assisted activation of PMS.
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2026
·
IF 8.3
Xuhan Wang,Xiaoning Meng,Wei Gao
Hydrophobic ZIF-8 was grown on PdPt/WO 3 for room‑temperature H 2 detection under 90% RH. • ZPPW-2.0 sensor achieved ultrahigh response (15976.29) to 5000 ppm H 2 at 25℃ under 90% RH. • Dual sieving provided excellent selectivity against interfering gases. • Red‑light excitation enhanced sensitivity via oxygen‑vacancy activation. • Multi‑mechanism design ensured humidity‑tolerant and stable performance. This study presented the development of a room-temperature hydrogen (H 2 ) gas sensor, designated ZPPW-2.0, capable of operating reliably under high-humidity conditions. The sensor structure was constructed by growing hydrophobic zeolitic imidazolate framework (ZIF-8) on a PdPt-modified WO 3 sensing film. This configuration enabled a synergistic surface regulation mechanism involving molecular sieving, surface defect engineering and photoexcitation-enhanced surface reactivity. Under ambient operating conditions (25°C, 90% relative humidity), the sensor exhibited a remarkable response of 15976.29 to 5000 ppm H 2 , a response time of 8 s, excellent repeatability, long-term stability, and outstanding selectivity. Furthermore, illumination with 655–660 nm red light could enhance performance. The observed high performance was attributed to the synergistic enhancement by surface defect states, effective exposure of surface active sites, inhibition of surface water competition, and molecular sieving. This work highlighted the central role of surface reaction, and interfacial regulation in designing reliable room-temperature H 2 sensors for humid environments. Download: Download high-res image (274KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry B
·
2022
·Vol. 10
·期 21
·4031-4039
·
IF 7.571
Xu Li,Kang Cui,Mingzhen Xiu,Chenxi Zhou,Li Li,Jing Zhang,Shiji Hao,Lina Zhang,Shenguang Ge,Yizhong Huang,Jinghua Yu
In this work, novel dual-mode lab-on-paper devices based on in situ grown WO3/BiVO4 heterojunctions onto cellulose fibers, as signal amplification probes, were successfully fabricated by the integration of photoelectrochemical (PEC)/colorimetric analysis technologies into a paper sensing platform for the ultrasensitive detection of alpha-fetoprotein (AFP). Specifically, to achieve an impressive PEC performance of the lab-on-paper device, the WO3/BiVO4 heterojunction was in situ grown onto the surface of cellulose fibers assisted with Au nanoparticle (Au NP) functionalization for enhancing the conductivity of the working zone of the device. With the target concentration increased, more immune conjugates could be captured by the proposed paper photoelectrode, which could lead to a quantitative decrease in the photocurrent intensity, eventually realizing the accurate PEC signal readout. To meet the requirement of end-user application, a colorimetric signal readout system was designed for the lab-on-paper device based on the color reaction of 3,3′5,5′-tetramethylbenzidine (TMB) oxidized by WO3/BiVO4 nanoflowers in the presence of H2O2. Noticeably, it is the first time that the WO3/BiVO4 heterojunction is in situ grown onto cellulose fibers, which enhances the sensitivity in view of both their PEC activity and catalytic ability. By controlling the conversion process of hydrophobicity and hydrophilicity on the lab-on-paper device combined with diverse origami methods, the dual-mode PEC/colorimetric signal output for the ultrasensitive AFP detection was realized. Under optimal conditions, the proposed dual-mode lab-on-paper device could enable the sensitive PEC/colorimetric diagnosis of AFP in the linear range of 0.09–100 ng mL−1 and 5–100 ng mL−1 with the limit of detection of 0.03 and 1.47 ng mL−1, respectively.
✓ 已验证
DOI
PubMed
高影响因子
Advanced Energy and Sustainability Research
·
2022
·Vol. 3
·期 12
·2200138
·
IF 0
Linlin Zhang,Lu Liu,Xiaodong Zhang,Chengjun Ge,Jianjun Liao
Pharmaceuticals and personal care products (PPCPs) have attracted widespread attention due to their durability to the environment. Therefore, it is highly desirable to develop new technologies that are environmentally friendly, energy saving, and compatible to degrade these pollutants. In this study, a vis–NIR-driven and highly efficient S-scheme photocatalyst, WO 3− x /S doped g-C 3 N 4 , is used for PPCPs degradation. The results show that the photocatalytic activity of WO 3− x /S doped g-C 3 N 4 composite system for PPCPs is much higher than that of WO 3− x and g-C 3 N 4 . The introduced WO 3− x has a great positive effect on the photocatalytic performance of WO 3− x /S doped g-C 3 N 4 S-scheme composite photocatalyst for both naproxen and diclofenac. Due to the fast photogenerated carrier separation brought by the S-scheme, the WO 3− x /S-doped g-C 3 N 4 nanocomposite exhibits enhanced performance in photocatalytic PPCPs degradation. The degradation rate of naproxen is 99.2%, and the degradation rate of diclofenac can also be as high as 99.5%. This research has important reference value for the synthesis of WO 3 -based S-scheme photocatalysts for energy and environmental applications.
✓ 已验证
DOI
Nanomaterials
·
2022
·Vol. 12
·期 8
·1324
·
IF 5.719
Limin Ou,Shengheng Nong,Ruoxi Yang,Yaoying Li,Jinrong Tao,Pan Zhang,Haifu Huang,Xianqing Liang,Zhiqiang Lan,Haizhen Liu,Dan Huang,Jin Guo,Wenzheng Zhou
Compared with the polycrystalline system, the single-crystalline ternary cathode material has better cycle stability because the only primary particles without grain boundaries effectively alleviate the formation of micro/nanocracks and retain better structural integrity. Therefore, it has received extensive research attention. There is no consistent result whether tungsten oxide acts as doping and/or coating from the surface modification of the polycrystalline system. Meanwhile, there is no report on the surface modification of the single-crystalline system by tungsten oxide. In this paper, multirole surface modification of single-crystalline nickel-rich ternary cathode material LiNi0.6Co0.2Mn0.2O2by WO3is studied by a simple method of adding WO3followed by calcination. The results show that with the change in the amount of WO3added, single-crystalline nickel-rich ternary cathode material can be separately doped, separately coated, and both doped and coated. Either doping or coating effectively enhances the structural stability, reduces the polarization of the material, and improves the lithium-ion diffusion kinetics, thus improving the cycle stability and rate performance of the battery. Interestingly, both doping and coating (for SC-NCM622-0.5%WO3) do not show a more excellent synergistic effect, while the single coating (for SC-NCM622-1.0%WO3) after eliminating the rock-salt phase layer performs the most excellent modification effect.Keywords:nickel-rich NCM;single-crystalline;surface modification;WO3
✓ 已验证
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Lijun Chen,Guanwen Su,Chenguang Wang,Leping Dang,Hongyuan Wei
Black phosphorous (BP) has attracted extensive attention because of its unique properties, but the unstable structure restricts its practical application. Herein, exfoliated tungsten trioxide (WO 3 ) was innovatively chosen to couple with BP nanosheets to form a novel 2D/2D heterojunction BP/WO 3 through self-assembly process. Instead of conventional hydrothermal reactor without the stirring function or just simple mixing at room temperature and pressure, the magnetic stirring reactor was adopted to provide an inert gas atmosphere (N 2 ) with high temperature and pressure (120 °C and 0.4 MPa), where the contact chance of BP and WO 3 nanosheets would be improved greatly and then be pushed towards each other to form tighter interface. The establishment of S-scheme band structure was proved by the abundant existence of ·OH and ·O 2 – detected by radical scavenging experiments and EPR test. Besides, the electron injection from WO 3 to BP under irradiation confirmed by XPS test can improve the chemical stability of BP much, and it further indicated the construction of S-scheme charge migration pathway between BP and WO 3 , which can achieve effective spatial separation of photogenerated e - -h + pairs without sacrifice of weakening the redox power of useful electrons and holes. As a result, the 6BP/WO 3 showed enhanced photocatalytic performance with a removal ratio of 98.6% for tetracycline hydrochloride (TCH) and 93.2% for Cr(VI) within 60 min, respectively. This study provides new strategy to the design and preparation of efficient 2D/2D S-scheme photocatalyst with visible light responsive ability.
✓ 已验证
DOI
高影响因子
CHEMOSPHERE
·
2019
·
IF 5.108
Kané Rabé,Lifen Liu,Noor Ahmed Nahyoon
Visible-light-driven photocatalytic Fuel Cell (PFC) is of great interest in the environmental pollutant remediation with energy recovering. Herein, enhancement in photocatalytic degradation of Tetracycline Hydrochloride (TC) with electricity generation was achieved in a single reactor of PFC with paired stainless-steel mesh electrode loaded with anodic g-C 3 N 4 /Fe 0 (1%)/TiO 2 and cathodic WO 3 catalyst (at various pH, 0.05 M Na 2 SO 4 , 10 Ω external resistance) with visible light and without light. With light, TC molecules were successfully removed (97.3% in 90 min, at initial and optimal pH 5), while generating 0.98 V cell voltage and 24 W m −2 power density, simultaneous removal of COD (chemical oxygen demand) and TOC (total organic carbon) was 91.3% and 95%, respectively, suggesting superior mineralization that can be explained by the excitation of the anodic triple component g-C 3 N 4 /Fe 0 (1%)/TiO 2. In contrast, without light, the removal of COD, TOC and the cell voltage were much lower (48.8%, 65.3%, 0.78 V). In dark, the fuel cell is self-driven and self-biased, forming potential gradient and degrading pollutants. The effects of solution pH, initial TC concentration on degradation and power generation were evaluated. This PFC degrading TC can maintain high photocatalytic activity and high power output capacity after 5 cycles with light. Without light, the electricity generation capacity was 50–70% that in visible light PFC. These features reveal that fuel cell with g-C 3 N 4 /Fe 0 (1%)/TiO 2 photo anode and WO 3 photocathode has great application potential for removing refractory pollutants from wastewater.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）