CRYSTAL GROWTH & DESIGN
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2026
·
IF 3.4
Yongqiang Liu,Jin Li
The integration of materials can generate synergistic effects, forming the core concept of a new generation of multifunctional applications. In particular, the integration of the ZnO structure with the zeolite imidazolate framework-8 (ZIF-8) has been shown to enhance gas selectivity, which is mainly achieved through the molecular sieving effect of the specific-sized porous structure of ZIF-8. In this work, a room-temperature ammonia (NH3) gas sensor based on ZnO/ZIF-8 composites was fabricated via a combination of hydrothermal synthesis, templating, and drop-casting methods. By tuning the concentration of 2-methylimidazole, the ZIF-8 content was optimized, and the ZnO/ZIF-8–2 sensor exhibited robust NH3 sensing performance at room temperature. The sensor exhibited outstanding sensitivity toward NH3 (150.16@100 ppm), approximately 16 times that of pure ZnO sensor, with a rapid response/recovery time (14.5 s/1.6 s). Furthermore, the sensor showed remarkable selectivity, repeatability, and humidity resistance. This improvement is attributed to the increased content of oxygen vacancies and adsorbed oxygen species, high carrier density, the unique lychee-like morphology and large specific surface area, and the synergistic effect of the ZnO/ZIF-8 heterojunction. This study provides a promising strategy for the efficient detection of NH3 at room temperature using ZIF-8-based hybrid materials.
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高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 5.6
Shenglin Kang,Xuetong Zhao,Qi Wang,Jianglin Wang,Yuchen Li,Jing Guo,Hongwen Liu,Jindong Yang,Jimou He,Yu Gan,Lijun Yang,Ruijin Liao
Developing ZnO-based varistor ceramics with high breakdown field and large nonlinear coefficient remains a great challenge. To address this issue, a thermal-assisted cold sintering process was employed to densify ZnO-based varistor ceramics at 300 °C and enhance their electrical properties through an annealing process at 900 °C. The pivotal roles of Dy 2 O 3 in tailoring the microstructure and electrical properties have been systematically studied. It is found that doping of Dy 2 O 3 suppresses ZnO grain growth, reducing the average grain size from 3.23 μm to 2.21 μm. Simultaneously, it introduces deep-level defects and increases interface state density, significantly elevating the Schottky barrier height from 1.74 eV to 3.15 eV. Specifically, the ZnO-based varistor ceramic with 0.5mol% Dy 2 O 3 presents a high breakdown field of 990 V/mm, with a large nonlinear coefficient of 109, and an ultralow leakage current density of 0.07 μA/cm 2 . This work provides an energy-efficient route for developing high-performance ZnO-based varistor ceramics.
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高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Xiangfeng Meng,Wei Liu,Min Zhang,Teng Wang,Conghui Hao,Zhixin Zhang,Sijia Li,Xinyue Du,Junwei An
Rational construction of In 2 O 3 /ZnO n-n heterojunction hollow hexagonal structure nanotubes via MOF template strategy. • In 2 O 3 /ZnO sensor exhibits an ultrafast response of 1 s to TEA at a low operating temperature of 90 °C. • Compared with the pristine In 2 O 3 sensor, the In 2 O 3 /ZnO composite exhibits a 3.08-fold higher response toward TEA, with a limit of detection of 1 ppm. • The superior gas-sensing performance originates from the unique porous hollow structure of In 2 O 3 /ZnO and the n-n heterojunction constructed at the interface, which provides a promising strategy for the rapid low-temperature detection of TEA. Metal-organic frameworks (MOFs) have designed frame structures and excellent catalytic properties, which can effectively address practical application challenges of triethylamine (TEA) gas sensors. In this study, a hollow porous nanotube composite of In 2 O 3 /ZnO was synthesized using a solvothermal method with MOFs serving as sacrificial templates, and it was then utilized for low-temperature rapid detection of TEA. This composite material, characterized by a unique porous hollow structure and n-n heterojunction, boasts a high specific surface area and numerous active sites, resulting in outstanding gas sensitivity performance at lower operating temperatures. At the optimal operating temperature of 90 °C, the In 2 O 3 /ZnO-2 sensor exhibits a rapid response (1 s) to 200 ppm TEA, and its response value of 34.3 is 3.08 times that of the original In 2 O 3 sensor. In addition, this sensor also exhibits excellent selectivity, reproducibility, and moisture resistance. This experiment provides an effective solution for the rapid detection of TEA at low temperatures. The In 2 O 3 /ZnO sensor exhibits a response value of 34.3 toward 200 ppm TEA at a low operating temperature of 90 °C, with a response time as low as 1 s, as well as excellent selectivity, repeatability and long-term stability. The enhanced depletion layer induced by the n-n heterojunction and the unique hollow hexagonal structure are considered to be the key factors responsible for the improved gas-sensing performance of the composite. Download: Download high-res image (112KB) Download: Download full-size image
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Materials Chemistry Frontiers
·
2026
·
IF 8.1
Xiao Long Cao,Zhong Li,Kai Yu Yao,Fei Yue Wu,Bo Xin Hu,Tao Tang,Yin Fen Cheng,Yi Liang,Jing Hao Zhuang,Xin Yi Hu,Qi Zhang,Nianzhong Ma,Yao Yang Liu,Qing Wen Song,Qian Wang,Dazhi Chen,Jian Zhen Ou
Solid–liquid interface reactions offer a promising route for synthesizing two-dimensional (2D) metal oxides. Here, we demonstrate the in situ formation of Zn-nanoparticle-decorated 2D ZnO sheets through the simple sonication treatment of solid Zn metal in a pure aqueous environment. In this synthetic system, dissolved oxygen in water enables the mild surface oxidation of a solid Zn substrate, while the intrinsic lattice mismatch between metallic Zn and ZnO generates interfacial tensile strain, which ultimately promotes the exfoliation of ultrathin 2D ZnO nanosheets. Residual parent Zn that is incompletely oxidized during the reaction can grow in situ and firmly anchor to the surface of ZnO nanosheets, thereby achieving the natural construction of Zn/ZnO metal–semiconductor heterostructures. The resulting Zn/ZnO heterostructure forms Mott–Schottky contacts at the metal–semiconductor interface, leading to a built-in electric field that facilitates the efficient separation of photogenerated electron–hole pairs. Leveraging their optical absorption in the blue-to-ultraviolet range, the heterostructure exhibits remarkable room-temperature NO2 sensing under purple-light illumination. A response magnitude of up to 705.3% is achieved toward 10 ppm NO2, along with reversible and dynamic responses across a range of concentrations. Additionally, the sensor exhibits excellent repeatability, high selectivity, and a low detection limit of 50 ppb. This study demonstrates the potential of solid–liquid interfacial engineering for constructing metal–semiconductor heterostructures and advancing light-assisted high-performance gas sensing technologies.
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ChemistrySelect
·
2026
·Vol. 11
·期 19
·e73451
·
IF 2.3
Jingwei Jia,Sutian Duan,Peng Liu,Shunzhen Feng,Qin Xu
In this paper, zinc oxide (ZnO) nanotubes were synthesized via an anodic oxidation method, and ZnO/carbon nanotube (CNT) composites (ZnCNTs) were further fabricated through a hydrothermal method. The ZnCNT composites exhibited enhanced photodegradation efficiency for Rhodamine B (RhB) under simulated sunlight irradiation, with ZnCNT-5.7 (5.7 wt% CNTs) achieving 98.4% RhB degradation within 7.5 min. The apparent reaction rate constant ( k = 0.433 min− 1 ) was 4.84- and 3.46-folds higher than those of pristine ZnO and ZnCNT-1 (1 wt% CNTs), respectively. This superior photocatalytic performance originated from extended visible light absorption and improved charge carrier separation efficiency, which facilitated the utilization of photogenerated electrons (e − ) and holes (h + ). Radical trapping experiments confirmed that superoxide radicals (·O 2 − ) and hydroxyl radicals (·OH) were the dominant active species responsible for RhB degradation. This work provides a feasible strategy for designing efficient photocatalysts for dye-contaminated water treatment. Graphical ZnO/carbon nanotube (ZnCNT) composites demonstrate exceptional photocatalytic efficiency for rapid Rhodamine B degradation under simulated sunlight. The incorporated carbon nanotubes significantly enhance charge carrier separation and visible light absorption. This synergistic interaction promotes the generation of reactive oxygen species, enabling ultrafast dye removal and offering a promising strategy for environmental water purification.
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Molecular Catalysis
·
2026
·
IF 4.3
Zirui Zhang,Xujie Hao,Yunfei Xu,Bing Wang,Yinghui Sun,Tong Xu,Jie Bai
Controllable construction of hollow tubular structures and the mechanism of photo-thermal synergistic catalysis. • The incorporation of Zn facilitates the directional transfer of photoexcited electrons to Pd, tailoring its electronic structure. • Exceptional catalytic performance (TOF = 4234h −1 ) and atomic utilization efficiency achieved under ultralow palladium loading. Photothermal synergy offers a promising pathway to overcome the limitations of high energy demands and stringent reaction conditions associated with conventional Suzuki-Miyaura coupling reaction. Herein, a hollow tubular palladium oxide-zinc oxide/lanthanum oxide nano photothermal catalyst (PdO-ZnO/La 2 O 3 ) was successfully synthesized via electrospinning combined with high-temperature pyrolysis. The as-prepared material exhibited outstanding photothermal catalytic activity in the Suzuki-Miyaura coupling reaction, achieving a 98% yield of biphenyl within 30 min under mild conditions and delivering a turnover frequency (TOF) as high as 4234.1 h -1 . The superior catalytic activity is attributed to the transfer of photogenerated electrons from Zinc species to palladium species under visible light irradiation, facilitating the formation of electron-rich palladium active sites. This synergistic effect significantly enhances the reaction rate of the Suzuki-Miyaura coupling. This catalyst achieves high catalytic activity with only 0.5 wt% Pd loading, outperforming prior reported systems by maintaining excellent performance while drastically lowering Pd consumption and enhancing precious metal utilization efficiency. Furthermore, the catalyst retained over 92% of its performance after five reaction cycles, demonstrating robust recyclability and sustained catalytic performance. This study provides new insights for the development of high-performance and low-energy photothermal catalysts and facilitates the practical application of Suzuki-Miyaura reactions in green synthesis. Download: Download high-res image (166KB) Download: Download full-size image
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SENSORS
·
2026
·Vol. 26
·期 9
·2725
·
IF 4
Jun Zhou,Qian Qiao,Sijie Chen,Xuan Yu,Xiaoming Yu,Cao Li,Jian Zheng,Cunxi Zhang,Rui Wang
Self-powered photodetectors have attracted widespread attention in Internet of Things applications due to their low power consumption and high sensitivity. In this study, plasmonic self-powered poly(3-hexylthiophene)/zinc oxide (P3HT/ZnO) heterojunction photodetectors incorporating silver triangular nanoplates (AgTNPs) were fabricated using sol–gel and spin-coating techniques. The experimental results demonstrate that the incorporation of AgTNP nanostructures significantly enhances the photoelectric conversion efficiency of the plasmonic P3HT/AgTNPs/ZnO photodetectors across both the ultraviolet and visible spectral regions. The responsivity enhancement ratio of the plasmonic devices reached its maximum under illumination at a wavelength of 525 nm. Compared with the reference P3HT/ZnO device, the responsivity values of the P3HT/AgTNPs-1/ZnO and P3HT/AgTNPs-2/ZnO devices increased by factors of 3.24 and 4.21, respectively. The optimal P3HT/AgTNPs-2/ZnO device exhibited responsivity values of 9.49, 10.80, and 10.47 mA/W under irradiation at wavelengths of 440 nm, 460 nm, and 525 nm, respectively. The mechanism of performance enhancement induced by the plasmonic AgTNPs is also discussed. This work demonstrates that embedding triangular plasmonic metal nanoplates within semiconductor heterojunctions constitutes an effective strategy for performance enhancement, providing new insights for the rational design of high-performance optoelectronic devices.
Keywords: photodetector; ZnO; silver triangular nanoplate; P3HT
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PubMed
高影响因子
Catalysts
·
2026
·Vol. 16
·期 8
·696
·
IF 4.5
Zhenhua Cai,Kexin Zhu,Dongwei Sun,Zhihui Li,Xiangyu Wang,Zihan Li,Hua Jiang,Fuping Zeng
Sulfur hexafluoride (SF6) serves as an essential insulating and arc-extinguishing medium in power facilities, while it is an extremely potent greenhouse gas with an ultra-long atmospheric lifetime. To realize efficient medium-temperature harmless disposal of waste SF6, two-dimensional stable C4N monolayers were adopted as substrates to load ZnO and CuO nanoparticles for composite catalyst fabrication. XRD, TEM, and EDS characterizations confirmed the uniform dispersion of the metal oxides without destroying the C4N two-dimensional skeleton. Comparative experiments proved that an NH3reducing atmosphere significantly accelerates SF6decomposition. The 3:1 CuO-modified catalyst achieved a maximum SF6conversion of 91%, and a CaO additive effectively restrained high-temperature sintering and irreversible HF halogen poisoning, boosting overall catalytic efficiency by approximately 30%. DFT adsorption simulations revealed totally different active centers: hollow sites dominate ZnO-C4N with broad adsorption capacity for SO2, SO2F2, and other fluorinated intermediates, whereas surface O sites of CuO-C4N exhibit exclusive strong chemisorption toward SO2. Combined with macroscopic kinetics and atomic-scale interfacial interaction rules, their distinct stepwise defluorination pathways were illustrated. This study offers solid experimental data and microscopic theoretical guidance for designing advanced C4N-based catalysts for waste SF6abatement.
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高影响因子
LANGMUIR
·
2025
·
IF 3.9
Leyao Bi,Boyan Fu,Jiahui Lin,Junsheng Wen,Jiaxing Fu,Wenyue Tian,Binglin Zou,Chunjie Wang,Yue Wang
Acetylacetone is a highly volatile, flammable, and toxic compound that emits an irritating odor and poses significant threats to human survival and safety. Consequently, rigorous monitoring of acetylacetone concentrations is essential. Herein, we successfully synthesized GO-modified Co-doped ZnO (8-ZOC, 8 wt % Co/Zn) nanoparticles (NPs) with different GO contents (0.01–0.03 g) using a secondary hydrothermal method for the first time, achieving excellent performance in detecting low concentrations of acetylacetone gas. Among all samples, the sensor with a GO content of 0.02 g exhibits the highest response (598.22) to 5 ppm of acetylacetone at 250 °C, with a value 9.28 times higher than the response of 8-ZOC (64.50). Meanwhile, GO/8-ZOC-2 exhibits a rapid response, requiring only 3 s, which is 50% faster than 8-ZOC, and also features a recovery time that is 74 s shorter. Additionally, it presents outstanding selectivity and reproducibility and excellent long-term stability. The enhanced gas sensing performance of GO/8-ZOC-2 results from the combined effect of multiple factors, including the abundant oxygen vacancies created by GO modification, the relatively high specific surface area, and the synergistic effect of the p–n heterostructure. The excellent sensing performance exhibited by GO/8-ZOC materials endows them with significant potential for practical applications in the field of acetylacetone gas sensors.
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高影响因子
IONICS
·
2016
·Vol. 22
·期 8
·1343-1351
·
IF 2.119
Li Qi-Ling,Xu Wang-Qiong,Bai Hong-Li,Guo Jun-Ming,Su Chang-Wei
ZnO-coated LiMn 2 O 4 cathode materials were prepared by a combustion method using glucose as fuel. The phase structures, size of particles, morphology, and electrochemical performance of pristine and ZnO-coated LiMn 2 O 4 powders are studied in detail by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), galvanostatic charge-discharge test, and X-ray photoelectron spectroscopy (XPS). XRD patterns indicated that surface-modified ZnO have no obvious effect on the bulk structure of the LiMn 2 O 4 . TEM and XPS proved ZnO formation on the surface of the LiMn 2 O 4 particles. Galvanostatic charge/discharge test and rate performance showed that the ZnO coating could improve the capacity and cycling performance of LiMn 2 O 4 . The 2 wt% ZnO-coated LiMn 2 O 4 sample exhibited an initial discharge capacity of 112.8 mAh g −1 with a capacity retention of 84.1 % after 500 cycles at 0.5 C. Besides, a good rate capability at different current densities from 0.5 to 5.0 C can be acquired. CV and EIS measurements showed that the ZnO coating effectively reduced the impacts of polarization and charge transfer resistance upon cycling.
研究领域:
材料科学
·
电化学
·
能源存储
·
无机化学
·
纳米材料
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高影响因子
Materials Today Chemistry
·
2022
·
IF 7.613
Wufan Xuan,Husheng Shan,Dunan Hu,Lei Zhu,Tong Guan,Yulong Zhao,Yinghuai Qiang,Jian Song,Jiao Zhang,Meirong Sui,Xiuquan Gu,Sheng Huang
In this work, we coated perovskite quantum dots (CsPbBr 3 ) with metal oxide (ZnO) by an in-situ oxidation strategy to obtain CsPbBr 3 @ZnO nanocrystals , which effectively improved the moisture stability of the perovskite material. In addition, the ZnO layer can also transfer the interaction with gas molecules to the inner CsPbBr 3 , giving the CsPbBr 3 @ZnO nanocrystals good gas-sensing properties at room temperature . This study considered CsPbBr 3 @ZnO films’ structural, morphological, and gas sensing properties; and simulated breath monitoring tests. Later a sensor based on CsPbBr 3 @ZnO nanocrystals was prepared and used to detect the presence of heptanal (a breath biomarker for lung cancer and COVID-19) in different gases, including air, artificial breath, and real breath. The sensor displayed a fairish sensitivity ( S = 0.36) alongside a brief response/recovery time (36.5 s/5.3 s) towards 200 ppm heptanal prepared with air, and the limit of detection could reach up to 2 ppm in the air and 3 ppm in artificial breath (made up of air, ethanol, isopropanol, 7-tridecanone, and n-tetradecane). Furthermore, the intelligent classification algorithms were used to identified the real breath samples containing heptanal (1–5 ppm) with an 82.5% accuracy rate in simulated breath monitoring tests. Theory calculation results showed that the good response to heptanal was attributed to both the positive adsorption energy (+3 eV) and the increased lattice distortion induced by heptanal. These sensors show great potential to be an effective method for early detection and treatment of lung cancer and COVID-19 for a healthy and prolonged life. We believe that this research will open the door toward more stable and practical perovskite-based sensors.
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高影响因子
BIOSENSORS & BIOELECTRONICS
·
2013
·
IF 5.437
Minggang Zhao,Zhenglong Li,Ziqi Han,Ke Wang,Yu Zhou,Jingyun Huang,Zhizhen Ye
A facial biotemplate-directed synthetic route for fabricating mesoporous multiwall ZnO nanotubes (ZnO-MMNTs) was proposed. Owing to the mesoporous multiwall based matrix, one dimensional (1D) tubes based channels and high isoelectric point (IEP), the prepared ZnO-MMNTs are wonderful platform to immobilize glucose oxidase (GOx) for glucose biosensing. Scale-adaptive cells are constructed to hold enzymes molecules, maintain enzymatic activity and keep stability. The prepared enzymatic electrode (chitosan/GOx/ZnO/Au) exhibits high sensitivity (47.2 μA mM −1 cm −2 ), very fast response (<2 s), quite low K M a p p (1.09 mM), excellent selectivity and stability. Therefore, ZnO-MMNTs are promising material for enzyme assembly and other biological applications .
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