APPLIED CATALYSIS B-ENVIRONMENTAL
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2025
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IF 21.1
Yi-Fan Qiao,Wen-Cui Li,Lei He,Jia Wang,Danhui Sun,Zihao Wang,An-Hui Lu
To efficiently convert ethanol into C 4+ olefins without an external hydrogen supply, this study designed an anatase-supported zinc oxide catalyst (ZnO/TiO 2 -A). Combining characterizations with kinetics measurements, we infer that the highly dispersed Zn-O-Ti sites efficiently promote ethanol dehydrogenation to acetaldehyde, which is identified as the rate-limiting step. Concurrently, Ti-O sites with strong C-C coupling ability convert acetaldehyde into high-carbon enal intermediates, which subsequently undergo hydrogenation and dehydration to yield C 4+ olefins with a high formation rate of 43.96 mmol C-atom ·g cat. −1 ·h −1 , outperforming most reported catalysts in the literature. Crucially, nuclear magnetic resonance spectroscopy analysis confirms that ethanol acts as an intrinsic hydrogen donor, supplying active hydrogen for the hydrogenation of C C and C O bonds in enal intermediates, thereby obviating the need for external hydrogen. This work presents a new strategy employing a non-precious metal oxide catalytic system for upgrading ethanol to high-value products.
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MATERIALS & DESIGN
·
2025
·
IF 7.9
Ruofeng Yin,Enoch Obeng,Zhixing Li,Akmal Ergashev,Wei Wang,Rongbing Chen,Wei Wu,Da Sun,Qingqing Yao,Wencan Wu,Yunzhong Zhan
Drug-resistant bacterial wound infections, especially those caused by methicillin-resistant Staphylococcus aureus (MRSA), pose a critical clinical challenge with limited effective therapeutic options. Here, we report a photothermally responsive nanoplatform, (ZWMx), engineered via hydrothermal synthesis to integrate efficient photothermal conversion, reactive oxygen species generation, and bacterial membrane disruption. The composite leverages the broad absorption in the near infrared region and excellent electrical conductivity of tungsten carbide MXene to overcome the photoinstability of ZnO, achieving a photothermal conversion efficiency of approximately 29.78 % and strong catalytic activity through reactive oxygen species. Upon irradiation at 808 nm, ZWMx rapidly eliminates over 90 % of MRSA in vitro within five minutes and disrupts established biofilms, indicating a synergistic and multifaceted bactericidal mechanism. In vivo , ZWMx promotes near-complete healing of MRSA-infected wounds within twelve days, with minimal thermal damage to surrounding tissues, high biocompatibility, and increased expression of vascular endothelial growth factor receptor one, suggesting enhanced angiogenesis. These findings establish a light-responsive therapeutic strategy for the targeted elimination of drug-resistant infections and effective stimulation of wound repair, providing a promising alternative to conventional antibiotic therapies.
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CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Xing Yan,Dongren Cai,Meihong Lin,Zhijie Wu,Yegang Xia,Yanmei Cai,Sajid Ali,Kok Bing Tan,Andriambinintsoa Ranaivoson Tojonirina,Hao Sun,Guowu Zhan
The selective hydrogenation of CO 2 to methanol demands precise control of both catalyst architecture and reaction pathways. Here, we design an atomic layer deposition (ALD)-engineered Pd/ZnO/ZrO 2 ternary catalyst with atomic-scale ZnO interlayers to decouple and reconfigure active sites at dual interfaces (Pd-ZnO and ZnO-ZrO 2 ). This interfacial engineering drives a 7-fold enhancement in methanol space–time yield (0.584 vs. 0.084 g MeOH g cat −1 h −1 ) and switches the dominant reaction pathway from CO-mediated to formate-driven selectivity (methanol selectivity remarkably surges from 6 % to 64 %). Multimodal characterization and theoretical calculations reveal that ZnO interlayers orchestrate bifunctional cooperation: activating CO 2 /CO adsorption while suppressing CO/CH 4 formation through electronic effects. Long-term stability study uncovers a dynamic restructuring mechanism, where Pd-ZnO interfaces gradually evolve into PdZn β alloy phases under the reaction conditions. This work establishes ALD-mediated interface design as a generalizable strategy to manipulate reaction networks and methanol selectivity in catalytic CO 2 hydrogenation systems.
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Batteries-Basel
·
2025
·Vol. 11
·期 9
·342
·
IF 4.8
Wei Cao,Chenhan Xiong,Yanqiu Yu,Xiang Ji,Hao Xu,Ziwei Chen,Jun Chen,Rui Wang
Nickel–zinc batteries are promising candidates for safe, cost-effective, and high-power energy storage. However, the poor cycling stability of zinc anodes, mainly caused by dendrite growth and dissolution, remains a major challenge for their practical application. Herein, carbon-coated nano-ZnO (ZnO@C) composites were synthesized via a sol–gel method using polyvinyl alcohol (PVA) and zinc acetate as precursors. By systematically tuning the carbon content, the ZnO@C-6 sample with a carbon-to-ZnO mass ratio of 1:6 exhibited the best structural and electrochemical performance. Characterization confirmed a uniform amorphous carbon layer that enhanced conductivity and inhibited ZnO dissolution. Electrochemical tests demonstrated that ZnO@C-6 exhibited high reversible capacity (500 mAh g−1at 12 C after 1000 cycles), coulombic efficiency (>80%), and superior rate capability up to 30 C. Post-cycling SEM confirmed that the carbon coating effectively inhibits dendrite formation and preserves electrode morphology. These findings highlight the critical role of carbon coatings in stabilizing ZnO-based anodes and offer a viable pathway toward high-performance Ni-Zn batteries.
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Regenerative Biomaterials
·
2025
·
IF 8.1
Ding Jiaxin,Gao Binbin,Sang Zelin,Dai Zhen,Chen Zhenhua,Mei Xifan
Spinal cord injury (SCI) is a kind of health problem characterized by oxidative stress and neuronal apoptosis, which pose major challenges to the recovery of patients. Recently, the application of photothermal nanotechnology in medicine has opened up exciting new avenues for the treatment of SCI. This innovative approach leverages the unique properties of nanomaterials to enhance therapeutic outcomes. In our study, we developed a novel nanotherapeutic system named ZnO-ZIF8@H, which is designed to deliver targeted neuroprotective effects. We meticulously evaluated its performance under near-infrared (NIR) irradiation, which is known to promote local heating and stimulate biological processes. The data indicated that the application of ZnO-ZIF8@H combined with NIR irradiation significantly reduced oxidative stress levels in the affected tissues. This was evidenced by a marked decrease in malondialdehyde (MDA) levels, a well-known indicator of lipid peroxidation and cellular damage. Simultaneously, the treatment notably enhanced the activity of superoxide dismutase (SOD) and glutathione (GSH) enzymes. These findings suggest that ZnO-ZIF8@H+NIR could both protect cells from oxidative damage and boost the internal antioxidant defenses, highlighting its potential as an effective therapeutic strategy for mitigating secondary injuries following spinal cord trauma. It also suppressed neuronal apoptosis, as evidenced by TUNEL staining and decreased Cleaved-Caspase3 expression in NeuN-positive neurons. These results indicated that ZnO-ZIF8@H+NIR effectively reduces secondary damage from SCI by alleviating apoptosis and oxidative stress, offering a promising approach for the therapy of SCI.
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PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Benhua Liu,Zhaoyu Ma,Na Zheng,Chunxiao Ren,Ju Tang,Fan Zhang,Guo Chen
N-, S-, and B-doped carbon quantum dots (CQDs) were synthesised via a hydrothermal method, with N and S derived from cysteine, and B derived from boric acid. Then the CQDs were combined with ZnO to obtain a new type of surface-functionalised photocatalytic degradation materials. The photocatalytic degradation performance of these composites against various common organic pollutants and sulphonamide antibiotics was systematically studied. Results showed that CQDs modification enhanced photocatalytic efficiency and degradation rate. Doping with individual elements further improved performance, while co-doping with N, S, and B achieved the highest degradation rate. The degradation rate of rhodamine B reached 97.56 %. More importantly, the pH level had a remarkable influence on the photocatalytic activity of the composites with acidic conditions favouring the photocatalytic reaction. Free-radical trapping experiments indicate that ·O 2 – and ·OH played dominant roles in the photocatalytic process. In addition, the composites maintained good photocatalytic degradation performance after multiple cycles, demonstrating excellent stability.
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Nano-Micro Letters
·
2025
·Vol. 18
·期 1
·5
·
IF 36.3
Huang Rulu,Liu Chao,Zhang Kaili,Jiang Jianchun,Tian Ziqi,Chai Yongming,Wang Kui
A porous carbon-supported Ni-ZnO nanoparticles catalyst (Ni-ZnO/AC) was synthesized by low-temperature coprecipitation, demonstrating exceptional catalytic activity and stability.
Selective hydrogenation of 5-hydroxymethylfurfural (HMF) to 2,5-bis(hydroxymethyl)furan (97.5%) or 2,5-dimethylfuran (99.5%) is achieved over Ni-ZnO/AC catalyst by solvent-tuning.
Solvent-catalyst interaction jointly regulates hydrodeoxygenation behavior in HMF hydrogenation by modulating rate and pathway via a hydrogen shuttle mechanism.
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MICROCHIMICA ACTA
·
2025
·Vol. 192
·期 10
·1-14
·
IF 5.3
Bi Leyao,Fu Boyan,Lin Jiahui,Wen Junsheng,Fu Jiaxing,Tian Wenyue,Su Ningning,Zou Binglin,Wang Chunjie,Wang Yue
Soda biscuit-like Ag-ZnO@ZIF-8 heterostructures were successfully synthesized using a secondary hydrothermal method for the first time, demonstrating exceptional ethylene glycol sensing performance. The sample (2-Methylimidazol (MeIm) concentration of 0.04 g) exhibits a remarkable response value of 1325.50 to 100 ppm ethylene glycol at 240 °C, along with a rapid response time of merely 7 s. Additionally, it displays outstanding gas selectivity (k = 28.63–696.90), great reproducibility and long-term stability. Further experiments indicate that the enhancement of the composite material’s gas sensing performance can be primarily attributed to the interfacial electron transfer effect, the abundance of oxygen vacancies, and the synergistic interactions within the heterostructures. Overall, this study lays a solid theoretical foundation for the practical detection applications of ethylene glycol and provides new insights into the research on gas sensors based on ZnO-organic frameworks. Graphical
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JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2021
·
IF 8.067
Lin Zhang,Nuomei Li,Qiuchen Ma,Jiahui Ding,Chuang Chen,Zhaocheng Hu,Weiwei Zhao,Yufeng Li,Huanhuan Feng,Mingyu Li,Hongjun Ji
A series of large-area, flexible and transparent ultraviolet (UV) photodetectors (PDs) based on Ag nanowire (NW)@ZnO nanorods (NRs) are fabricated by an inexpensive, facile and effective approach. These Ag NW@ZnO NRs are successfully synthesized using a two-step method in an oil bath with a high surface-to-volume ratio and good crystallinity. The PDs are fabricated by drop-coating with different drop-coating times on the surface of polyethylene terephthalate (PET) coupled with Au electrodes. By optimizing the cross-linked network of Ag NW@ZnO NRs, PD2 with a size greater than 25 mm exhibits excellent photoresponse under UV light illumination of 365 nm (1.3 mW cm - 2 ) with a bias of 5 V: a high sensitivity of over 10 3 , and a much shorter rise/decay time of 2.6 s/2.3 s. Simultaneously, the detector exhibits an average transmittance of more than 70% in the visible light region, as well as good flexibility and excellent mechanical stability under a bending angle of 120° over 1000 circles bending. These integral advantages have significant potential for practical applications and mass production.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2016
·
IF 8.328
Shengjie Xia,Yue Meng,Xiaobo Zhou,Jilong Xue,Guoxiang Pan,Zheming Ni
In this paper, Ti/ZnO–Fe 2 O 3 composite derived from Ti/Schiff base intercalated ZnFe layered double hydroxides was used as thin film electrode in CO 2 photoelectroreduction. The influence of molar ratio of Ti/Fe and calcination temperature, which would affect the composites' physicochemical property and the photoelectrocatalytic performance for CO 2 reduction, were investigated in detail. The characterization results from XRD, SEM, TEM, UV-vis and BET showed that Ti/ZnO–Fe 2 O 3 composite with flower–like crystal from had small particle sizes, narrow band gap and excellent textural properties. The final product of CO 2 photoelectroreduction was methanol and the intermediates were formic acid and formaldehyde. The methanol field reached at 0.773 mmol/cm 2 after 3 h reaction with 0.5 V voltage by Ti/ZnO–Fe 2 O 3 composite with Ti/Fe = 1, calcined at 800 °C. In addition, the CO 2 photoelectroreduction pathway and the reason for highly efficient photoelectrocatalytic activity of the composite were also discussed.
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ACS Sustainable Chemistry & Engineering
·
2018
·
IF 6.14
Huan Wang,Wensheng Lin,Xueqing Qiu,Fangbao Fu,Ruisheng Zhong,Weifeng Liu,Dongjie Yang
In this work, lignin-decorated ZnO composite was prepared via an in situ synthesis method using industrial alkali lignin (AL). First, the AL was modified by quaternization to prepare quaternized alkali lignin (QAL). The microstructure and optical properties of the QAL/ZnO composite were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and UV–vis and photoluminescence (PL) spectroscopy. These results showed that the prepared QAL/ZnO composite possessed a flowerlike structure and showed excellent synergistic UV-absorbent properties. Interestingly, the anti-UV performance and mechanical properties of polyurethane (PU) were significantly improved when it was blended with the resulting QAL/ZnO. In comparison with pure PU film, the UV transmittance of the PU film was rapidly reduced. Furthermore, the tensile strength and elongation at break of PU film blended with QAL/ZnO were significantly improved, which was due to good compatibility between QAL/ZnO and PU matrix. Results of this work provide a significant and practical approach for the high value-added utilization of lignin as a functional material.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2011
·
IF 2.138
Qiuliu Huang,Liang Fang,Xia Chen,Muhammad Saleem
A series of oriented hexagonal wurtzite ZnO nanorod-array films were grown on fluorine-doped tin oxide (FTO) coated glass substrates by chemical process. The effect of polyethyleneimine (PEI) on the structure and micro-morphology of ZnO nanorod array films, as well as the photoelectric conversion properties in dye-sensitized solar cells (DSSCs) was analyzed. It was found that with the addition of PEI in growth solution, the ZnO nanorods became smaller in diameter and longer in length and hence the dye absorption and the photovoltaic performance of DSSCs were improved. A power conversion efficiency of 2.30% had been achieved on a DSSC based on a 7.9 μm-long nanorod array film prepared by a growth solution containing the PEI.
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