CERAMICS INTERNATIONAL
·
2017
·
IF 2.986
Xiang Xie,Xinzhen Wang,Jian Tian,Jiurong Liu,Huili Cao,Xiaojie Song,Na Wei,Hongzhi Cui
Au decorated ZnO flower-like architectures assembled from single crystal nanowires have been successfully synthesized. A facile thermal treatment route was employed, utilizing the composite gel of zinc acetate and polyvinyl pyrrolidone (PVP) as raw materials and was followed by a subsequent Au reduction process. PVP served as a surfactant and played a critical role in the generation of crystalline nanowires as well as for the formation of ZnO flower-like structure. Based on control experiments, the growth mechanism of ZnO flower-like structures was proposed. The diameter of ZnO crystalline nanowires was approximately 50–80 nm and the size of Au particles deposited on the surface of ZnO nanowires was approximately 5 nm. When tested as gas sensing material, the as-prepared Au decorated ZnO flower-like architecture exhibited superior gas sensing performance compared to ethyl acetate in terms of high response (approximately 102 at 100 ppm), short response and recovery times (10 s and 13 s, respectively), and low operating temperature (240 °C). The superior gas sensing performances are mainly attributed to the synergistic effects of ZnO crystalline nanowires and Au nanoparticles , as well as to the flower-like structure.
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高影响因子
JOURNAL OF POLYMER RESEARCH
·
2025
·Vol. 32
·期 3
·1-10
·
IF 2.8
Li Yong,Wei Yu,Huang Wenjia,Ru Hongfu,Zhao Shujun,Fu Feiya,Xiang Shuangfei
Durable and robust antibacterial fabrics are attracting growing attention due to increasing demands in the medical, feminine products and personal protection fields. Here, we report a simple yet effective method for embedding zinc oxide (ZnO) nanoparticles on polyester surfaces to produce an antibacterial polyester-cotton fabric with remarkable laundering and abrasion resistance. The fabric is prepared by pad-rolling, followed by hot-pressing to embed the ZnO nanoparticles onto the polyester fibers. The modified fabric achieves 100% bacterial reduction (BR) rates against both S. aureus and E. coli , exhibiting remarkable laundering durability even after 30 cycles and 600 abrasion cycles. Compared to other strategies using metal nanoparticles for antibacterial fabrics, this preparation is simple, cost-effective, low toxicity, and environmentally friendly, and effectively imparts durable antibacterial properties to fibers. This work represents a practical strategy for developing eco-friendly and cost-effective durable antibacterial textiles.
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Scientific African
·
2025
·
IF 3.3
Abdulwahid Abamecha,Ahmed Awol Yimer,Guta Gonfa Muleta,Shimeles Addisu Kitte
In this work, a novel ternary nanocomposite electrochemical sensor based on Ag 2 S-CuO-ZnO was developed and put to use for ascorbic acid (AA) electrochemical detection. By combining CuO-ZnO and AgNO 3 precursors, an easy-to-use and inexpensive homogeneous precipitation procedure was used to produce the Ag 2 S-CuO-ZnO nanocomposite. X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared (FT-IR), and ultraviolet-visible (UV–VIS) spectroscopy were used to analyze the produced ternary nanocomposite. AA displayed an irreversible oxidation peak on the cyclic voltammograms (CVs) at Ag 2 S-CuO-ZnO nanocomposite modified glassy carbon electrode (Ag 2 S-CuO-ZnO/GCE). The enhanced sensitivity of AA detection at Ag 2 S-CuO-ZnO/GCE was attributed to the ternary nanocomposite's synergistic effects and improved electron transfer efficiency. Using linear sweep voltammetry (LSV), the proposed electrochemical sensor demonstrated a linear range of 1 - 150 μM with a limit of detection (LOD) of 0.73 μM. The demonstrated sensor's practical applicability was successfully used to determine the amount of AA in an orange sample.
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高影响因子
IONICS
·
2024
·
IF 2.4
Mohite Dadaso D.,Chavan Sachin S.,Dubal Sumit,Lokhande P. E.,Kadam Vishal,Jagtap Chaitali,Rednam Udayabhaskar,Ansar Sabah,Kumar Yedluri Anil
The material used for electrodes greatly affects the electrochemical performance of a supercapacitor. This study utilized electrospinning to create ZnO/Polyacrylonitrile (PAN) composite-based nanofibers, which were then heat-treated to form carbon nanofibers (CNFs). The ZnO/PAN-NFs and the resulting ZnO and PAN CNFs were thoroughly characterized for their crystallographic and morphological properties. Electrodes made from ZnO and PAN-based CNFs demonstrated a peak capacitance of 163.44 F g −1 at a scan rate of 10 mV s −1 , which is a 64% increase over electrodes made from PAN CNFs, in addition to enhanced cyclic stability and rate capability. An asymmetric supercapacitor constructed with ZnO/PAN-CNFs//AC showed an energy density of 6.1 Wh kg −1 and a power density of 1000 W kg −1 . The device also exhibited outstanding longevity and electrochemical reversibility, maintaining 84% of its specific capacitance after 5000 cycles. This research seeks to investigate the unique structural and electrochemical properties of the electrospun ZnO/PAN nanocomposite material, contributing to the advancement of high-performance supercapacitor electrodes.
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CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Dewei Ma,Panli Zhu,Jun Huang,Xiuhua Cao
The research on low-temperature lead-free glass is of great significance for the miniaturization, integration and intelligence of current electronic products, as well as environmental protection. In this article, we report the preparation of low-temperature lead-free B 2 O 3 -BaO-ZnO-SiO 2 -Al 2 O 3 -TeO 2 glasses by a melt-quenching technique. With the increase of TeO 2 content in glass, the glass transition temperature and melting temperature of sintered glass powder decrease, while its wettability and acid corrosion resistance show an increasing trend. The application of glass powder in the sintering experiment of terminal electrode slurry further proves this viewpoint. Compared with the poor sintering performance of the slurry with TeO 2 -free glass powder, the slurry containing TeO 2 glass powder forms a very dense sintered solid, and the sintered slurry is tightly bonded to the ceramic substrate .
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SOLID STATE IONICS
·
2024
·
IF 3
Xinyu Feng,Hanzhen Liu,Zhenhang Lu,Xuanyu Lin,Xin Tang
The advancement of novel heterostructure electrolytes and the enhancement of solid oxide fuel cell (SOFC) performance represent a promising strategy for developing medium-temperature SOFCs. This study focuses on synthesizing CaSnO 3 via the sol-gel technique and fabricating CaSnO 3 -ZnO composites to serve as electrolytes for medium-temperature SOFCs. At 550 °C, the 2Ca 8Zn composite demonstrated an ionic conductivity of 0.204 S cm −1 , a peak power density of 700 mW cm −2 , and intermittent durability lasting up to 24 h under identical thermal conditions. Upon further investigation of the energy band structure, it has been revealed that CaSnO 3 -ZnO composites are promising candidates for serving as electrolytes in medium-temperature SOFCs. The findings indicate that the combination of calcium and zinc oxides can form n-n heterojunctions within the material, which enhance ionic conductivity by creating space charge regions, while simultaneously suppressing electronic conductivity. Consequently, CaSnO 3 -ZnO nanocomposites are anticipated to pave the way for advancements in intermediate-temperature solid oxide fuel cells.
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CHEMICAL ENGINEERING SCIENCE
·
2024
·
IF 4.1
Xiangyang Liu,Yue Pan,Yichen Huang,Yubin Li,Qianqian Wang,Sha Li,Li Qiu,Ruifeng Li,Xiaoliang Yan
Simultaneous hydrogenation of polycyclic aromatic hydrocarbons and sulfur contaminates (dibenzothiophene, DBT) in coal tar remains a challenge for energy utilization and environmental remediation. Herein, Ni 3 Zn/ZnO–Al 2 O 3 catalysts with different ZnO loading were prepared for deep hydrogenation of phenanthrene (PHE) and synchronous removal of DBT in a fixed-bed reactor. Compared to Ni/Al 2 O 3 , the optimal Ni 3 Zn/ZnO–Al 2 O 3 exhibited superior catalytic performance of 100.0% PHE conversion and 92.5% perhydrophenanthrene selectivity with 100.0% DBT conversion at 300 °C under 6 MPa for 10 h in a fixed-bed reactor. The kinetic study for PHE hydrogenation and mechanism for DBT hydrodesulfurization on Ni catalysts were discussed. Electron transfer from Zn to Ni over the active sites weakened DBT adsorption rather than PHE adsorption. The strong interactions between Ni 3 Zn and ZnO–Al 2 O 3 supports facilitated sulfur migration from the alloy to intimate ZnO, preventing the deactivation of Ni active centers by sulfur deposition and poisoning.
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Nature Communications
·
2024
·Vol. 15
·期 1
·1-12
·
IF 14.7
Sun Mengyao,Chen Yanjun,Fan Xiaoqiang,Li Dong,Song Jiaxin,Yu Ke,Zhao Zhen
Photocatalytic oxidative coupling of methane with oxygen is promising to obtain valuable muti-carbon products, yet suffering low reactivity. Here, we apply cerium modifications on zinc oxide-supported gold catalysts based on the electronic asymmetry design of lattice oxygen to improve the coupling activity. The methane conversion rate exceeds 16000 μmol g −1 h −1 with muti-carbon selectivity of 94.9% and catalytic durability of 3 days, and it can increase to 34000 μmol g −1 h −1 under more thermal assistance, with a turnover frequency of 507 h −1 for ethane and an apparent quantum efficiency of 33.7% at 350 nm. According to systematic characterizations and theoretical analysis, cerium dopants not only can boost the formation of reactive oxygen species but also intervene in the vivacity of lattice oxygen by manipulating metal-oxygen bond strength, thereby leading to favorable methyl desorption to form ethane and quick water release. This work provides insight into the rational design of efficient photocatalysts for aerobic methane-to-ethane conversion.
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PubMed
高影响因子
WATER AIR AND SOIL POLLUTION
·
2024
·Vol. 236
·期 1
·1-15
·
IF 3.8
Li Xiao-fang,Ding Yue,Wang jing,Feng Xiao-qiang
Based on the excellent adsorption, photosensitization and electron transfer ability of biochar, the combination of photocatalyst and biochar is an effective method to improve the overall photocatalytic activity. Hence, a novel efficient CS-biochar/ZnO/TiO 2 photocatalyst with the different content of N-doped porous CS-biochar were constructed and characterized by a variety of testing methods, such as FT-IR, XRD, UV–vis DRS, SEM–EDS, PL, EIS, TPR, LSV. Photocatalytic experiments indicated that all the CS-biochar/ZnO/TiO 2 composites with different CS-biochar content exhibit excellent photocatalytic activity for Rh B degradation. Among them, 63%-CS/ZnO/TiO 2 composite has the best catalytic activity, which 94.5% of Rh B was degraded within 25 min, and the kinetic constant was 0.0993 min −1 , which is about 1.96 and 1.72 times that ZnO (0.0507 min −1 ) and TiO 2 (0.0576 min −1 ), respectively. Moreover, photoelectrochemical experiment results confirmed that CS-biochar/ZnO/TiO 2 greatly enhanced the charge separation process compare with ZnO and TiO 2 . Meanwhile, CS-biochar/ZnO/TiO 2 has excellent stability, and a possible photocatalytic mechanism was put forward.
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高影响因子
FUEL
·
2024
·
IF 6.7
Zhongwei Meng,Zhongqiang Bao,Zhao Chen,Bosong Zeng,Zihan Qin,Jie Tan,Ping Pu
The regeneration characteristics of a diesel particulate filter (DPF) are studied on a regeneration test bench, with a focus on the effects of ash and catalyst, including the effects of ZnO and CeO 2 on the regeneration performance and emission characteristics of the DPF. The results indicate that the addition of ZnO and CeO 2 can easily lead to local high temperatures during the regeneration process of the DPF, with the highest peak temperature appearing in a 1:3 ratio for both ZnO and CeO 2 , leading to a significant increase in CO 2 . Compared with ZnO, CeO 2 can advance the DPF rapid regeneration period by about 300 s. When the ratio of PU: CeO 2 is 1:5, the total particulate matter emitted is reduced to the lowest level, but it will significantly increase the emission of nuclear model particles, especially particles below 23 nm. Under the same mixing ratio, an increase in carbon loading can enhance the oxidation ability of ZnO towards carbon black, but the difference between the number of particles emitted during DPF regeneration and regeneration efficiency will gradually decrease.
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LWT-FOOD SCIENCE AND TECHNOLOGY
·
2024
·
IF 6
Wenting Gao,Bin Mu,Fangfang Yang,Yalong Li,Aiqin Wang
Multifunctional biodegradable packaging films with antibacterial and antioxidant properties are highly desirable for food preservation. In this study, multifunctional bioactive chitosan-based composite films were fabricated for loquat preservation after incorporation of licorice flavonoids/ZnO/attapulgite (LF/ZnO/APT) nanocomposites, which were prepared by anchoring ZnO nanoparticles on the surface of attapulgite followed by mechanochemical-assisted loading of licorice flavonoids. The structure and physicochemical properties of composite films were characterized using Fourier transform infrared spectroscopy, transmission electron microscopy, X-ray powder diffraction, etc., while the effects of the added amount of LF/ZnO/APT nanocomposites on the mechanical, antibacterial and antioxidant performances of composite films were investigated. The results indicated that introduction of LF/ZnO/APT nanocomposites obviously enhanced the mechanical properties and antibacterial ratios against Escherichia coli (97.04 ± 2.08%) and Staphylococcus aureus (98.68 ± 1.10%) of composite films. Moreover, the composite films also exhibited excellent scavenging capacities against 2,2-diphenyl-1-picrylhydrazyl and hydroxyl radicals. Therefore, the as-prepared composite films significantly extended the shelf life of loquats, and it is feasible to be served as promising active food packaging materials based on component synergistic effect of composite films.
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-11
·
IF 15.7
Zhao Jun,Liu Bonan,Xiong Lunqiao,Liu Wenchao,Wang Duanda,Ma Wangjing,Jiang Litong,Yang Jianlong,Wang Ping,Xiao Tiancun,Zhao Sui,Edwards Peter P.,Tang Junwang
7 billion of 9.2 billion tons of plastic produced becomes waste while conventional catalytic plastic recycling methods are vulnerable with degraded performance and intensive energy input. Here, a hybrid Zn/b-ZnO catalyst, together with the specially-designed microwave reaction system, has achieved fast plastic waste upgrading under atmospheric pressure without using H 2 . Bifunctional ZnO acts as a microwave absorber and substrate catalyst, and in-situ formed Zn clusters promote C-C bond cleavage and nearly 100% upcycle landfilled plastic mixtures into lubricant base oil precursors and monomers. Unprecedented turnover number (250 g plastic g −1 catalyst ) of plastic depolymerisation and long-time stability over 50 successive cycles have been demonstrated, together with 8-time higher energy efficiency compared with conventional catalysis, indicating this strategy is an economical approach to efficient upcycling of plastics towards valuable products. Moreover, the catalyst can tolerate high contaminates, even the landfilled plastics can still be converted to lubricant base oil precursors, which has never been reported before.
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PubMed
高影响因子
危险品化学品经营许可证（带存储）