Journal of Environmental Chemical Engineering
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2025
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IF 7.2
Baoting Tan,Jia Yan,Yiwen You,Xujie Cao,Zhilong Song
Environmental residues of fluoroquinolone antibiotics have become a major threat to both ecosystems and human health, necessitating the development of highly efficient adsorbents with molecular recognition capabilities. This study presents a novel class of WO 3− x quantum wire (QWs) designed to address the limitations of traditional adsorbents, particularly poor selectivity and difficult regeneration processes. We successfully fabricated sub-2 nm ultrathin WO 3− x QWs with enriched with W 5 + /W 6+ active sites and surface functional groups through a precise solvothermal method. The resulting WO 3−x QWs demonstrated exceptional selectivity for fluoroquinolone antibiotics, achieving > 90 % removal efficiency for ciprofloxacin, norfloxacin, and ofloxacin, in contrast to much lower removal rates for common dyes like rhodamine B and methylene blue, as well as other antibiotics like tetracycline hydrochloride. Comprehensive characterizations, including thermodynamic and kinetic models, revealed three key molecular recognition mechanisms driving this high performance. Furthermore, when incorporated into a composite membrane, the QWs demonstrated outstanding performance in continuous filtration, showing high removal efficiency, rapid adsorption, and long-term stability. This study not only provides a new class of efficient adsorbent materials for antibiotic treatment, but also offers fresh insights into the development of functional materials with molecular recognition properties for broader applications.
研究领域:
环境科学
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材料科学
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化学工程
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纳米技术
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药物污染
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Renzhi Xiong,Yiting Sun,Jiahao Huang,Fangde Liu,Yanhe Xiao,Baochang Cheng,Shuijin Lei
Photocatalytic production of H 2 O 2 faces challenges such as low charge separation efficiency, narrow light absorption, and sluggish reaction kinetics. This study developed a WO 3− x @Zn 3 In 2 S 6− x S-scheme heterojunction and designed atomic-level W S interface chemical bonds through a defect-induced strategy to address these challenges. Oxygen/sulfur vacancies not only promote the formation of chemical bonds but also trigger a local surface plasmon resonance effect (LSPR) in WO 3− x , enabling full-spectrum light harvesting and photothermal heating. The S-scheme charge transfer retains the high-energy electrons in Zn 3 In 2 S 6− x and holes in WO 3− x to realize dual H 2 O 2 generation pathways. Coupled with LSPR-induced thermal activation, this multidimensional strategy achieved an unprecedented H 2 O 2 yield (3891.2 μmol g −1 h −1 ) under simulated sunlight, which is 9.2 times and 161.5 times higher than that of the non-thermally activated pristine Zn 3 In 2 S 6− x and WO 3− x , respectively. In situ X-ray photoelectron spectroscopy and a series of photoelectrochemical measurements confirmed the S-scheme charge dynamics, and electron spin resonance verified the thermally enhanced reactive oxygen species generation. This work establishes defect-mediated heterointerfacial engineering as a universal paradigm for solar-to-chemical energy conversion and provides feasible insights for designing photothermal-assisted photocatalytic systems.
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DIAMOND AND RELATED MATERIALS
·
2024
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IF 4.3
Lei Ge,Yingjie Ding,Chaoyang Zhu,Zezhong Xu,Hongdian Lu,Kunhong Hu,Ping Chen,Jinsong Xie
The electrochemical two-electron water oxidation reaction (2e-WOR) offers a promising avenue for hydrogen peroxide (H 2 O 2 ) production. It is crucial to design electrocatalysts with high selectivity, yield, resource abundance, and environmental friendliness. In this paper, as a new generation 2e-WOR electrocatalyst, the WO 3-X /CNTs@carbon fiber membrane nanostructure with abundant oxygen-rich vacancy (O V ) has been discovered by a series of test techniques including XRD, FE-SEM, TEM, FT-IR, Raman and XPS, comprising interconnected carbon nanotubes and carbon fibers enveloped in WO 3 nanorods with oxygen-rich vacancies. By comparing the specific surface area of WO 3-x /CNTs@carbon fiber membrane at different temperatures, it was observed that the maximum value is 44.09 m 2 /g when the mass ratio of AMT to PAN was 3:2 at 600 °C. Furthermore, the WO 3-X /CNTs@carbon fiber membrane can be directly utilized as an independent electrode. The electrochemical performance test revealed that the Faraday efficiency of the WO 3-X /CNTs @CF-600-2 can reach 54 % (2.48 V vs RHE (reversible hydrogen electrode)), while the H 2 O 2 yield can achieve 10.3 μmol· min −1 ·cm −2 , nearly ten times higher than that of pure WO 3 . Furthermore, the stability testing demonstrated that after 12 h, the WO 3-X /CNTs @CF-600-2 exhibited excellent stability with minimal change in its Faraday efficiency. This enhancement is attributed to the improved selectivity of WO 3 , excellent electrical conductivity, and mass transfer performance of carbon fiber. Finally, we proposed a mechanism for 2e-WOR and provided some perspectives on this reaction along with summarizing recent discoveries.
研究领域:
材料科学
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环境科学
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电化学
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DOI
高影响因子
ENERGY CONVERSION AND MANAGEMENT
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2021
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IF 9.709
Juan Yang,Pengyu Chen,Jun Dai,Yumei Chen,Liqing Rong,Dazhao Wang
Sunlight-driven photocatalysis is regarded as a promising strategy for direct conversion of methane in low concentration coal mine methane (LC-CMM) to value-added methanol, yet remains a grand challenge to efficiently activate and convert methane. Herein, WO 3−x nanosheets with gradient concentration of oxygen vacancy were synthesized and firstly served as full-spectrum responsive catalysts for transformation of LC-CMM to methanol at ambient conditions. Defect-rich WO 3−x -N2.0 shows a methanol yield of 1475 μmol·g −1 , roughly 4.5 times higher than WO 3 -A2.0 under simulated solar light irradiation. The selectivity of CH 3 OH on the optimal WO 3−x -N2.0 is up to 76%. More importantly, WO 3−x -N2.0 exhibits a methanol yield of 396 μmol·g −1 with the selectivity of 82% even under near infrared light irradiation while almost no CH 3 OH is detected over WO 3 -A2.0. Based on the results of energy-band structure, photoelectrochemical characterization, PLs and EPR tests, the significantly enhanced photocatalytic performance over WO 3−x -N2.0 is ascribed to the synergistic effect caused by the formation of oxygen vacancies, including extending light absorption into NIR region, improving separation of photoinduced electron-hole pairs and boosting production of hydroxyl radicals (key active species that drive CH 3 OH production). This work will offer a sustainable pathway to broaden the utilization of LC-CMM via efficient coupling of solar energy.
研究领域:
化学工程
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能源科学
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环境科学
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高影响因子
Catalysis Science & Technology
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2022
·Vol. 12
·期 22
·6827-6837
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IF 6.177
Penghui Li,Junhua Gao,Jing Shi,Huixiang Wang,Xiangying Xing,Jingzhao Ren,Yu Meng,Liancheng Wang,Baoliang Lv
Linear terminal olefin epoxidation is a significant oxidation reaction for the synthesis of valuable industrial intermediates. As typical olefin epoxidation catalysts, supported tungsten oxides are rich in oxygen vacancies, which have been investigated for improving catalytic performance in other reactions, but the influence on olefin epoxidation is rarely studied. Herein, a series of WO3−x/SBA-15 catalysts with different oxygen vacancy concentrations were obtained by impregnation and sequent hydrogen reduction at 300–600 °C. Their catalytic performances for 1-hexene epoxidation with hydrogen peroxide at 70 °C were studied. It was found that an appropriate concentration of oxygen vacancies could improve epoxidation (the epoxide productivity increased from 135 to 196 μmolepoxide gW−1 min−1) and reduce the apparent activation energy (from 51.6 to 46.9 kJ mol−1). The oxygen vacancies are also beneficial for cycloolefin and other linear olefin epoxidation. In particular, the productivity of cyclooctene oxide was promoted from 4161 to 5744 μmolepoxide gW−1 min−1. This promotion effect was attributed to the increase in the number of Lewis acid sites caused by introducing moderate oxygen vacancies, which could improve the activation of hydrogen peroxide and facilitate epoxidation. In situ FT-IR spectroscopy and density functional theory calculations further indicated that increasing the oxygen vacancies contributes to reducing the energy barrier of the transfer of electrophilic oxygen atoms in active intermediate W–OOH to 1-hexene, thereby promoting epoxidation.
研究领域:
催化化学
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材料科学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2019
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IF 8.355
Jianping Sheng,Ling Zhang,Liu Deng,Yajing Han,Liqiang Wang,Haichuan He,You-Nian Liu
Tungsten oxide is a promising nanodrug in phototherapy via transforming light energy to reactive oxygen species and heat. Nevertheless, the phototherapeutic activity of the tungsten oxide nanomaterials is generally activated under 980 nm laser, which is close to the absorption of normal tissue, resulting in unfavorable heating effect on normal tissues. Therefore, the tungsten oxide nanomaterials which can be excited under 808 nm are highly required to avoid overheating and obtain deep tissue penetration of near-infrared (NIR) laser. Here, we successfully synthesized a novel dopamine enveloped tungsten oxide nanodots (WO 3−x /Dpa-Mel NPs) via facile one-step solvothermal route, using dopamine as the template and reductant in triethylene glycol solvent. Under the 808 nm laser irradiation, the as-obtained WO 3−x /Dpa-Mel NPs exhibit excellent photodynamic activity and stability. Meanwhile, the WO 3−x /Dpa-Mel NPs also possess high photothermal conversion property. Thus, the photothermal therapy (PTT) and photodynamic therapy (PDT) can be triggered simultaneously under single 808 nm laser irradiation. Additionally, the inherited good biocompatibility and dispersity in aqueous solution from dopamine hydrochloride (Dpa-Mel) also make the WO 3−x /Dpa-Mel NPs more suitable for in vivo application. The as-obtained WO 3−x /Dpa-Mel NPs exhibit an excellent synergistic phototherapy effect on solid tumor ablation in vivo without damaging healthy tissues under single 808 nm NIR light irradiation, indicating WO 3−x /Dpa-Mel NPs can serve as a multifunctional therapeutic nanoplatform to realize the synergistic cancer therapy.
研究领域:
生物医学工程
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纳米医学
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肿瘤学
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DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2026
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IF 8.3
Chen Chen,Sijie Chen,Yu Zhang,Jinhong Liu,Shenghui Xia,Vishal Chaudhary,Praveen Sekhar,Larry Nagahara,Chao Wang,Hui Zhang,Pengfei Cheng,Pradeep Bhadola,Wei Liu,Thomas Thundat,Zhimin Li,Ajit Khosla
Pristine metal oxide gas sensors often suffer from poor selectivity and limited polarizability. The objective of this work is to overcome these bottlenecks by developing an advanced material tailored specifically for highly sensitive and intelligent NO 2 sensing applications. Consequently, oxygen vacancy-rich 2D ultrathin Cs-doped WO 3-x nanosheets were synthesized via a solvothermal method. KPFM, UPS, and TAS confirmed that optimal Cs doping (0.08 mol%) optimizes the surface work function and drastically prolongs the photo-generated carrier lifetime (
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高影响因子
ACS Applied Materials & Interfaces
·
2023
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IF 9.5
Yue Fu,Bin Liu,Yihao Luan,Hu Zhao,Dan Chen,Dong Wang,Weihao Cai,Lu Zhang,Shuang Sun,Jiaqi Zheng,Yi Yuan,Yunming Wang,Huamin Zhou
The effectiveness of time- and temperature-sensitive medical products (TTSMPs) (vaccines, medicines, and biological agents) is generally evaluated by sporadically checking the storage conditions recorded in electronic thermometers. However, electronic thermometers do not achieve all-time and all-regional record, resulting in the wrong evaluation of a single TTSMP and seriously endangering public health. Herein, we report a photonic crystal sensor for evaluating the effectiveness of a single TTSMP processing storage environment. The photonic crystal sensor assembled by colloidal microspheres (WO3–x nanospheres were added into the microsphere gap) generates a fascinating composite color of angle-dependent structural color (maximum reflectivity = 45%) and durative color (WO3–x coloration). Effectiveness evaluation principle reveals that the pattern on the sensor, which was printed by the composite color, fades sensitively to time and temperature, thus having different visible periods (0–21 days affected by temperature). The visible periods of the patterns can be used to evaluate a single TTSMP’s effectiveness stored under different temperatures. Furthermore, the photonic crystal sensor shows outstanding flexibility and slight adhesion, offering a promising application toward the effectiveness evaluation of TTSMPs throughout storage, transportation, and sales processes.
研究领域:
生物医学工程
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材料科学
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传感器与执行器
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药学
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产品关联
DOI
PubMed
高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
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2018
·Vol. 20
·期 25
·17268-17278
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IF 3.906
Weicheng Huang,Jinxin Wang,Lang Bian,Chaoyue Zhao,Danqing Liu,Chongshen Guo,Bin Yang,Wenwu Cao
A WO3−x/TiO2−x nanotube array (NTA) heterojunction photoanode was strategically designed to improve photoelectrocatalytic (PEC) performance by establishing a synergistic vacancy-induced self-doping effect and localized surface plasmon resonance (LSPR) effect of metalloid non-stoichiometric tungsten suboxide. The WO3−x/TiO2−x NTA heterojunction photoanode was synthesized through a successive process of anodic oxidation to form TiO2 nanotube arrays, magnetron sputtering to deposit metalloid WO3−x, and post-hydrogen reduction to engender oxygen vacancy in TiO2−x as well as crystallization. On the merits of such a synergistic effect, WO3−x/TiO2−x shows higher light-harvesting ability, stronger photocurrent response, and resultant improved photoelectrocatalytic performance than the contrast of WO3−x/TiO2, WO3/TiO2 and TiO2, confirming the importance of oxygen vacancies in improving PEC performance. Theoretical calculation based on density functional theory was applied to investigate the electronic structural features of samples and reveal how the oxygen vacancy determines the optical property. The carrier density tuning mechanism and charge transfer model were considered to be associated with the synergistic effect of self-doping and metalloid LSPR effect in the WO3−x/TiO2−x NTA.
研究领域:
材料科学
·
光催化
·
理论计算
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DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2022
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IF 24.319
Jingwei Li,Jianrui Feng,Xiaomin Guo,Hongli Fang,Jiayi Chen,Churong Ma,Ruchun Li,Yuya Wang,Zebao Rui
This work reports a novel strategy to activate type III heterojunction through introducing defect sites at the interfaces and making use of the defect band as the bridge for storage, secondary excitation, and interband transfer of the photothermal induced charges for constructing two-component Type B heterojunction photothermocatalyst. Type III heterojunction WO 3−x /GdCrO 3 is activated by defect-band state W 5/4+ at WO 3−x interface under photothermal conditions, achieving efficient charge separation, high redox potential, and full visible light absorption. The as-bridged (or Type B) heterojunction WO 3−x -R/GdCrO 3 as non-noble metal catalyst demonstrates excellent photothermocatalytic performance in toluene degradation with a reaction rate five times higher than that of WO 3−x /GdCrO 3 with less interfacial defect sites as well as in CO 2 reduction with high CO and CH 4 yielding rates of 49.6 μmol g −1 h −1 and 18.5 μmol g −1 h −1 in gas-solid reaction system without sacrifice agent, evidently better than those reported in the literature.
研究领域:
材料科学
·
催化
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环境科学
·
化学
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DOI
高影响因子
危险品化学品经营许可证（带存储）