COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
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IF 4.9
Fangbin Wang,Jing Qi,Liang Zhu
Bacterial infection and contamination is a tough problem that generates numerous hazardous factors in areas ranging from human health, clinical to industrial manufacture. Here, an Ag/MoS 2 nanozyme-modified ZnO nanopillar surface was designed and assembled. This nanopillar surface can achieve remarkable antibacterial effects against Gram-positive Staphylococcus aureus and Gram-negative Escherichia coli . The obtained nanozyme-modified nanopillar surface demonstrated mechanical antibacterial property with a killing rate of 69.6% and 70.4% to Staphylococcus aureus and Escherichia coli , respectively. Moreover, the surface disables bacteria under H 2 O 2 efficiently, reaching a lethality rate of 89.7% and 98.4% in 30 min, respectively. The superiorities of fast and high lethality rate are owed to a synergistic antibacterial functions consisted of mechanical rupture, enormous ROS generation and silver ions release. Meanwhile, the nanozyme-modified nanopillar surface also shows the surface superhydrophobic property with an antibacterial adhesion rate of over 99.9%. Therefore, the scheme pdresented in this study can provide a potential perspective to solve bacterial infection and contamination in the fields of daily life, clinical and industrial manufacture.
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高影响因子
APPLIED SURFACE SCIENCE
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2011
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IF 1.795
Mengjia Yuan,Shengtian Wang,Xiaohong Wang,Lingling Zhao,Tianhong Hao
A new macroporous ZnO/MoO 3 /SiO 2 hybrid was synthesized by a method involving sol–gel technology and biomimetic synthesis. It was characterized by Elemental analysis, Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), X-ray photoelectron spectrum (XPS) and scanning electron microscopy (SEM). Chemical degradation of 0.3 g/L Safranin T (ST) by air oxidation over macroporous ZnO/MoO 3 /SiO 2 hybrid was studied. It was found that the decolorization efficiency and the chemical oxygen demand (COD) removal of ST reached above 95.3% and 93.2%, respectively, within 25 min at room temperature and atmospheric pressure. And the organic pollutant was mineralized to simple inorganic species such as HCO 3 − , Cl − and NO 3 − , while the total organic carbon (TOC) decreased 95.4%. The structure and morphology of the catalyst were still stable after six cycling runs and the leaching test showed negligible leaching effect.
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高影响因子
Journal of Materiomics
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2024
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IF 8.4
Di Wu,Yingxin He,Chi Lin,Bing Li,Jiangping Ma,Lujie Ruan,Yajie Feng,Chaogang Ban,Junjie Ding,Xiaoxing Wang,Danmei Yu,Li-Yong Gan,Xiaoyuan Zhou
Piezo-catalysis, which leverages mechanical energy to drive chemical reactions, is emerging as a promising method for sustainable energy production. While the enhancement of piezo-catalytic performance through metal-support interactions is well-documented, the critical influence of the synthesis atmosphere during metal-loaded piezo-catalyst preparation has been a notable gap in the field. To this end, we systematically investigate how different atmospheric conditions during the synthesis of catalysts—without gas flow or with Ar, N 2 and O 2 —affect metal dispersion, oxidation states, piezo-carrier dynamics, and electronic structure, and subsequently shape the metal-support interactions and piezo-catalytic activity. ZnO/Au, with Au deposited on ZnO, is selected as the model system, and hydrogen evolution reaction is used as the probe reaction. Our results demonstrate that an oxygen-enriched atmosphere significantly enhances the metal-support interactions, achieving an ultrahigh net hydrogen yield of 16.5 mmol·g –1 ·h –1 on ZnO/Au, a 3.58-fold increase over pristine ZnO. Specifically, the performance improvements substantially surpass those synthesized under other atmospheric conditions. Conversely, exposure to CO 2 transforms the ZnO support into ZnCO 3 , adversely affecting its catalytic activity. These findings reveal the crucial impact of synthesis conditions on piezo-catalyst performance and thereby open new avenues for optimizing catalyst systems for enhanced sustainability.
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高影响因子
CERAMICS INTERNATIONAL
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2017
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IF 2.986
Yunxiang Chen,Xianzhe Zeng,Yijie Zhou,Rong Li,Heliang Yao,Xun Cao,Ping Jin
Cesium-doped tungsten bronze Cs x WO 3 (CWO) is a promising candidate for near-infrared (NIR) shielding materials on windows of buildings and automobiles. However, the NIR shielding ability of CWO easily deteriorates in hot humid and alkaline environments, which hinders further applications of CWO. In this paper, we firstly reported a novel core-shell structure of CWO@ZnO, which exhibited high NIR shielding performance with excellent stability. In hot humid environment, CWO@ZnO nanoparticles kept their outstanding NIR shielding ability after 150 days while uncoated CWO nanoparticles showed an evident deterioration in just 1 day. Moreover, the CWO@ZnO core-shell structure also exhibits excellent stability in alkaline environment. The good protection of the uniform, continuous and compact ZnO shells played an important role on enhancing the stabilities of CWO nanoparticles. This study provides a novel route for promoting the practical applications of CWO NIR shielding materials.
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高影响因子
CARBON
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2017
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IF 6.337
Changqing Song,Xiaowei Yin,Meikang Han,Xinliang Li,Zexin Hou,Litong Zhang,Laifei Cheng
Flexible and high-performance electromagnetic absorbing materials of three-dimensional (3D) hierarchical reduced graphene oxide (RGO) foams decorated with in-situ grown ZnO nanowires (ZnO nws ) were realized by a direct freeze-drying and hydrothermal process. The unique structure not only effectively reduces agglomeration of RGO and the density of composites, but also makes great contributions to impedance match, dielectric loss and inner scattering, achieving enhanced microwave absorption performance . When RGO foam is 0.8 mg/mL, the ZnO nws /RGO foam/PDMS composite with 3.3 wt% absorber loading attains a minimum reflection loss value of −27.8 dB at 9.57 GHz with a thickness of 4.8 mm, and a wide effective absorption bandwidth of 4.2 GHz covering the whole X band (8.2–12.4 GHz). The fundamental microwave absorption mechanism of the composites is discussed. These results demonstrate a promising method to fabricate an economical, lightweight, broadband and highly efficient microwave absorption material .
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高影响因子
Journal of Coatings Technology and Research
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2024
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IF 2.3
Cui Congcong,Chen Di,Mao Linhan,Xiao Yanwen,Huang Qiaoyu,Chen Zhaoxia,Qi Xiaoyun,Zhang Yuhong
The frequent occurrence of oil spills in recent years has led to serious contamination of water resources, and materials with superhydrophobic surface properties have attracted much attention for crude oil recovery and water contamination remediation. However, the fragile robustness of superhydrophobic materials greatly hinders their practical applications. Herein, we prepared the robust, photocatalytic superhydrophobic material of SH-ZnO-PDMS@fabric by a simple two-step immersion method. Zinc oxide nanoparticles (ZnO NPs) provided the rough surface structure, and fluorine-free dodecyltrimethoxysilane (DTMS) provided the low surface energy. Polydimethylsiloxane (PDMS) was introduced as a binder to strengthen the force between the nanoparticles and the fabric. The cotton fabric showed excellent superhydrophobicity with a water contact angle (WCA) range of 146.9–156.6°. The methylene blue (MB) in water was basically degraded after 12 h of exposure to UV lamp, manifesting that the cotton fabric had excellent photocatalytic property. The cotton fabric also showed excellent self-cleaning and antifouling properties. Importantly, SH-ZnO-PDMS@fabric maintained superhydrophobic properties after mechanical abrasion, ultrasonic washing, UV irradiation, and acid/alkali immersion. The prepared superhydrophobic materials can be repeatedly used to separate various oil–water mixtures due to their superhydrophobic and recyclable properties. This versatile, efficient, and simple strategy has good application prospects in water pollution remediation and oily wastewater treatment.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Shenyu Lan,Chuan Yu,Yawen Peng,Xiaonan Hu,Wei Yan,Xiang Cui,Mingshan Zhu,Chunyang Zhai
Piezo-modulated interface engineering is an effective method for tuning the charge transfer process to enhance piezocatalytic dynamics. In this study, SrTiO 3 /ZnO heterojunctions were successfully synthesized via hydrothermal methods to degrade carbamazepine in water. The optimal SrTiO 3 /ZnO-5 % sample exhibited a remarkable 99.9 % degradation efficiency of carbamazepine within 60 min under ultrasonic vibration. The piezocatalytic reaction rate ( k value = 0.0746 min −1 ) was 4.63 times and 10.97 times higher than that of pure SrTiO 3 and pure ZnO, respectively. Reactive species scavenger tests, electron paramagnetic resonance techniques, and bands gap analysis revealed that the enhanced activity can be attributed to the construction of an interfacial electric field in SrTiO 3 /ZnO heterojunctions and the modification of an internal piezoelectric polarized field. This allowed charge redistribution and transport across the SrTiO 3 /ZnO heterojunction interface, and facilitated the generation of hydroxyl radicals (HO • ) through simultaneous hole oxidation and electron reduction. This study provides a comprehensive mechanistic understanding about piezoelectric heterojunctions in the catalytic redox reactions, and offers valuable insights for designing more effective piezoelectric heterojunctions for the degradation of pharmaceutical organic pollutants.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Xue Wu,Yulin Liu,Meng Li,Bowen Li,Xiaohui Mao,Qiankun Wang,Xiaoning Tang,Heng Zhang,Lincai Peng,Xin Gao
The escalating demand for clean water and proliferation of microbial contamination in water have challenged ecosystems and human health safety. ZnO NPs are widely used as environmental restoration agents, but their efficacy in water decontamination is hindered by low biological toxicity. In order to enhance its sterilization efficiency, we propose a top-down strategy utilizing the unique maze structure of corn stalk pith (CSP) as a germ trapper for ZnO. The in-situ delignified CSP offers abundant active sites for the adsorption of Zn 2+ , exhibiting the typical behaviors of monolayer, physisorption, endothermicity, spontaneity, and randomness. This adsorption behavior exerts an influence on microscopic morphology of the composite column, consequently resulting in alterations to antibacterial properties. The results show that the hybrid column fabricated under the Zn 2+ initial dosage of 1.00 mol/L at 30 h for 40 °C, possesses such optimal features as stacked grain-shaped ZnO NPs of 669.3 mg/g loading amount with adhesion coefficients of 0.73 ∼ 0.86 for bacterial microparticles. Consequently, the assembled bio-filter can eliminate E. coli and S. aureus as high as 99.7 % and 96.5 % respectively, attributed to CSPP labyrinth structure to enhance pathogen capture from water and facilitate ZnO-mediated inactivation. The collective findings emphasize the viability of agro-waste stalks as bio-filters for water purification.
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高影响因子
MOLECULES
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2024
·Vol. 29
·期 4
·854
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IF 4.2
Pengfei Chen,Jin Li,Jianing Wang,Lihan Deng
Organic dyes in natural waters jeopardize human health. Whether semiconductor materials can effectively degrade dyes has become a challenge for scientific research. Based on this, this study rationally prepared different nanocomposites to remove organic dyes effectively. Pure SnO2quantum dots, ZnO nanosheets, and SnO2/ZnO (ZS) binary nanocomposites are prepared using the hydrothermal method. Subsequently, SnO2/ZnO@GO (ZSG) ternary composites containing different amounts of GO, i.e., ZSG-5, ZSG-15, and ZSG-25, are synthesized by an ultrasonic water bath method, in which ZS was coupled with GO to form Z-type heterojunctions. The ZSG-15 ternary composites exhibited excellent photocatalytic activity for the degradation of rhodamine B by simulating sunlight. The test results show that the degradation rate of ZSG-15 is about 7.6 times higher than ZnO. The increase in photocatalytic activity is attributed to the synergistic effect of SnO2and GO to improve the separation efficiency of photogenerated carriers in ZnO. Notably, the large specific surface area of GO increases the reactive sites. Compared with binary nanocomposites, ZSG-15 broadens the response range to light while further accelerating the electron transport rate and improving the photoelectric stability.
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PubMed
高影响因子
Journal of Environmental Chemical Engineering
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2025
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IF 7.2
Jiming Wang,Min Ji,Jiaqi Lv,Min Wang
Photo-thermo-chemical dry reforming of methane (PTC-DRM) produces syngas has been a promising strategy to utilize abundant solar energy and alleviate greenhouse effect. Herein, we report an efficient PTC-DRM process on Ni-based catalyst with Zn doping and investigate the effect of Zn on the catalytic performance of catalysts. Zn promoted the generation of active sites on the surface of Ni-Al 2 O 3 , suppressed the accumulation of coke during the reaction process and enhanced the photocatalytic activity of the catalyst. Ni-ZnO-Al 2 O 3 catalyst exhibited highest thermal catalytic performance and the conversion of CH 4 and CO 2 are 50.2% and 58.1% at 650 ℃, respectively. All catalysts exhibited higher reaction rates of CH 4 and CO 2 and higher hydrogen selectivity under light conditions. Light also significantly enhanced the carbon deposition resistance and stability of the catalyst. And possible reaction mechanism of the Ni-ZnO-Al 2 O 3 was proposed during PTC-DRM process.
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高影响因子
Chemical Physics Impact
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2024
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IF 3.8
Mingzhang Liang,Anze Shui,Mei Cai,Hulei Yu
Semiconductor photocatalysis is an efficient technique to degrade the pollutants from wastewater. Herein, the doping of elements and the construction of heterojunctions are used to expand the visible light region and improve the transfer of photogenerated electrons-holes. The La-ZnO/BiOCl (LZB) heterojunction has been synthesized via the hydrothermal method. Furthermore, LZB-0.30 heterojunction is found to possess the optimal photodegradation efficiency of 100 % for RhB solution under the visible light within 45 min. Its degradation rate is ten times faster than that of La-ZnO, owing to positive development of photostimulated charge carriers. In addition, the results demonstrate that LZB-0.30, as an ideal photocatalyst, has great potential applications in the treatment of contaminants, providing a feasible strategy for environmental protection.
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高影响因子
CERAMICS INTERNATIONAL
·
2024
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IF 5.1
Hang Liu,Junlong Liu,Yanchang Liu,Zhihao Qu,Siye Tian,Yuhong Zhang
In this work, the ZnO microsphere is prepared by hydrothermal method and modified with different concentrations of Eu. The morphology of ZnO:Eu sample shows flower-like microspheres with many nanosheets. The gas performance of ZnO:Eu microsphere is investigated for detecting NO 2 . Compared with pure ZnO, the response of ZnO:2 % Eu sensor is increased by 8 times, and the optimal operating temperature of that is decreased to 130 °C. Especially, the gas sensing properties of ZnO:2 % Eu sensor is enhanced under UV excitation. The recovery time of ZnO:Eu sensor is reduced by 1200 s, and the response is increased by 3.6 times under UV excitation. The above results show an increase in sensor response due to doping Eu and UV excitation. At last, the possible gas mechanism of ZnO:Eu is discussed with and without UV excitation. This finding provides important guidance for UV-assisted sensors to enhance NO 2 response.
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高影响因子
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