Nanoscale Horizons
·
2018
·Vol. 4
·期 2
·452-456
·
IF 9.391
Yong Zhang,Wenxin Xu,Xiaojie Xu,Wei Yang,Siyuan Li,Jiaxin Chen,Xiaosheng Fang
It has always been a challenge to prepare self-powered ultraviolet photodetectors (UV PDs) utilizing a green, facile and low-cost method. Here, we provide such an approach for fabricating self-powered photodetectors based on Te nanowire/TiO2 nanoparticle (NP) and Te nanowire/ZnO nanoparticle (NP) heterojunctions. It is noteworthy that such devices were prepared via simply brushing non-toxic solution-processed Te nanowires and commercial TiO2 and ZnO nanoparticles onto paper. The as-obtained UV PDs can work under zero bias due to photovoltaic effects from the Te/TiO2 and Te/ZnO heterojunctions. This study not only presents high-performance UV PDs, but also provides a general and effective method for developing environmentally-friendly and energy-efficient optoelectronic devices for practical applications. The concept of employing daily-use brushes and recyclable paper provides a facile way to fabricate green low-cost PDs.
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SENSORS AND ACTUATORS B-CHEMICAL
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2022
·
IF 9.221
Li Chen,Liu-Xin Cai,Jing Geng,Chen-Chen Liu,Yue Wang,Zheng Guo
One-dimensional (1D) semiconductor composite nanofibers (NFs) with large specific surface areas , high length-to-diameter ratios, and abundant interfacial active sites have received widespread attention. In this work, a rationally designed 1D composite NFs architecture for detecting acetone is synthesized via a two-step process based on electrospinning followed by a thermal oxidation method. Utilizing the polyoxometalate (POM) as a molecular platform with high negative charges to combine transition metal ions precursors, highly dispersed ZnMoO 4 can be in situ grown on the ZnO. By adjusting the content of POM (H 3 PMo 12 O 40 , denoted as PMo 12 ) in the precursor solution , we can obtain a series of ZnMoO 4 decorated ZnO NFs (ZnMoO 4 -ZnO NFs). Compared with the pristine ZnO NFs, the ZnMoO 4 -ZnO NFs sensor exhibited excellent sensing characteristics over a wide range of acetone concentrations (50 ppb-50 ppm), such as high sensitivity , relatively low detection concentration, and high selectivity . The primary mechanism for the improved acetone gas sensing properties of the ZnMoO 4 -ZnO NFs could be ascribed to the available charge transfer and unique structure within ZnMoO 4 -ZnO NFs.
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RADIATION PHYSICS AND CHEMISTRY
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2026
·
IF 3.5
A.G. Darwish,Abdullah Alsulami
Lithium sodium silicate glasses containing ZnO with nominal composition (25-x) Li 2 O- xZnO-10Na 2 O-65 SiO 2 (mol%) (Where x = 0, 5, 10, 15, 20 and 25 mol%) were effectively synthesized using the melt quenching method. The impact of ZnO/Li 2 O replacement on the glass structure, physico-mechanical and radiation shielding performance was evaluated. Results from various physical properties, such as molar volume Vm and oxygen packing density (OPD), are consistent with a progressive change in the glass network as Li 2 O is replaced by ZnO. These trends suggest a reduction in network cohesion, though this interpretation is based on calculated physical parameters. FTIR results are consistent with ZnO incorporation into the silicate network. Zn–O bonds have lower dissociation energy than Si–O bonds, and the calculated mechanical moduli decrease with increasing ZnO content, consistent with the expanding molar volume and declining atomic packing density observed across the series. Peak deconvolution of the FTIR spectra reveals a shift in the low-frequency band from 515 cm −1 in ASZ0 to 473 cm −1 in ASZ25, consistent with increasing Zn–O vibrational contributions with ZnO content. All shielding parameters were theoretically calculated and evaluated using Phy-X/PSD software in the energy range between 0.015 and 15 MeV, and the results indicate that adding ZnO at the expense of Li 2 O leads to an improvement in the calculated shielding efficiency of the prepared glasses. The calculated photon-shielding parameters indicate that adding ZnO at the expense of Li 2 O improves the attenuation performance of the prepared glasses across the studied energy range. Experimental validation through direct gamma-ray transmission measurements is recommended in future work.
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APPLIED SURFACE SCIENCE
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2026
·
IF 6.6
Qi Liu,Ming-Dan Yao,Zi-Long Yang,Fu-Gui Yang,Zhe Feng,Ji Cai-Rang,Yu-Long Xie
ZIF-8-derived ZnO/CoFe 2 O 4 removes 99.12% ciprofloxacin in 6 min under visible light. • Type II band alignment drives directional electron transfer, suppressing carrier recombination. • Dual-channel PMS activation via photoelectron reduction and Co/Fe redox cycling. • Over 99% efficiency retained after five cycles in actual surface water and groundwater. Fluoroquinolone antibiotics in aquatic environments threaten ecosystems and human health by spreading antimicrobial resistance. This study synthesized a magnetically recoverable ZnO/CoFe 2 O 4 heterojunction using ZIF-8-derived porous ZnO as substrate via solvothermal method. The optimized composite achieved 99.12% ciprofloxacin removal within 6 min under visible light with peroxymonosulfate. XPS evidence supports Type II heterojunction formation with directional electron transfer with directional electron transfer from ZnO to CoFe 2 O 4 . A dual-channel PMS activation mechanism is proposed involving direct PMS reduction by photogenerated electrons and SO 4 ⁻ generation through Co 2 ⁺/Co 3 ⁺ and Fe 2 ⁺/Fe 3 ⁺ redox cycles. EPR identified 1 O 2 and SO 4 ⁻ as dominant reactive species. The catalyst maintained excellent stability with over 99% efficiency after five cycles. LC-MS revealed piperazine ring cleavage, decarboxylation and defluorination pathways leading to deep oxidative degradation. This work provides an efficient strategy for antibiotic wastewater treatment using magnetically separable photocatalysts with synergistic photo-oxidation and persulfate activation capabilities. Download: Download high-res image (205KB) Download: Download full-size image
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ACS Sensors
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2026
·
IF 10.9
Yang Zeng,Xiaowei Li,Haipeng Dong,Chaohan Han,Yunpeng Yin,Xinyu Wu,Xinghua Li,Changlu Shao,Yichun Liu
The construction of a p–n semiconductor heterostructure has been recognized as an effective strategy to achieve high-performance gas sensing. However, the opposite resistance change (signal transducer function) behaviors of p-type and n-type sensing materials in response to the same target gas significantly limit the overall transducer function within the p–n heterostructure. In this study, we designed p-NiO/n-ZnO Janus hollow nanofibers that feature an ordered built-in electric field, enabling directed charge separation and confinement of the conduction path to the ZnO outer layer. The design of the Janus architecture effectively mitigates the conflicting electrical responses of p-NiO and n-ZnO to acetone gas. Therefore, the sensors exhibit a response that is threefold higher than mixed NiO/ZnO nanofibers and sevenfold higher than pristine ZnO nanofibers, illustrating the pronounced transducer enhancement enabled by the Janus configuration. Furthermore, by precisely controlling the ZnO shell thickness, we demonstrate a Debye-length-regulated gas-sensing amplification mechanism. This work establishes a general strategy for nanoscale heterostructure engineering, paving the way for the development of high-performance MOS gas sensors with superior signal transducer function.
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PubMed
高影响因子
ChemistrySelect
·
2026
·Vol. 11
·期 11
·e07120
·
IF 2.3
Zhou Huang,Baijun Ma,Ke He,Feng Xie,Ming Zhou
To develop active packaging for extending the shelf life of perishable fruits like strawberries, this study fabricated a multifunctional nanocomposite film. The film was based on a linear low-density polyethylene/cyclic olefin copolymer (LLDPE/COC) blend to provide a high barrier matrix, into which zinc oxide nanoparticles (ZnO NPs) modified with the silane coupling agent KH-570 were incorporated to impart antibacterial functionality. The modified ZnO NPs showed improved dispersion within the polymer matrix as confirmed by SEM analysis. The resulting blown films exhibited enhanced comprehensive properties. Notably, the optimal film (LLDPE/COC/ZnO-1) achieved a tensile strength of 34.75 MPa and an elongation at break of 1189.03%. Compared to the pristine blend film, the nanocomposite film demonstrated a reduction of 7.35% in water vapor transmission rate (WVTR) and 2.5% in oxygen transmission rate (OTR). Critically, the film demonstrated strong antibacterial activity, showing inhibition rates of approximately 90.69% against Escherichia coli and 92.16% against Staphylococcus aureus . In practical strawberry preservation tests, the nanocomposite packaging effectively slowed down decay, weight loss, and softening, extending the shelf life by 3 days compared to conventional polyethylene packaging. This work presents a promising strategy for designing high-performance, multifunctional food packaging materials. Graphical KH-570 modified nano-ZnO was incorporated into an LLDPE/COC blend via blow molding. The optimal nanocomposite film (1 wt% ZnO) exhibited enhanced mechanical strength, barrier properties, UV-shielding, and antibacterial activity, successfully extending strawberry shelf life by 3 days. This work provides a promising strategy for multifunctional active food packaging.
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Micro and Nanostructures
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2026
·
IF 3.1
Sanling Fu,Aosha Wang,Chongfeng Jiang,Lele Wang,Fu Zhang
To solve the problems of low sensitivity, high detection limit, high operating temperature, and poor stability of metal oxide semiconductor ethanol sensors, Nd-modified ZnO composites were synthesized via a simple hydrothermal method by leveraging the unique advantages of rare earth elements in electronic structure and catalytic activity. The introduction of Nd species into the porous nanolayered structure of ZnO induced lattice distortion and generated an Nd 2 O 3 -ZnO heterojunction. This modification increased the oxygen vacancy defects in the material, promoted reactions between adsorbed oxygen species and ethanol, and thereby effectively enhanced the gas-sensing performance of the sensor. The results indicated that the 2% Nd-ZnO sensor achieved a lower operating temperature (375 °C), a high response (147 toward 100 ppm ethanol, 3.3 times that of pure ZnO), and an ultralow theoretical detection limit (80 ppb), together with excellent selectivity, repeatability, and long-term stability. These results demonstrate a heterojunction-defect co-engineering strategy enabled by rare-earth modification, providing an effective and practical pathway for designing high-performance ZnO-based ethanol gas sensors.
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ACS Sensors
·
2026
·
IF 10.9
Meng Mei,Yi Zheng,Kaixin Cheng,Bo Yao,Liao Wang,Juan Wu,Xinxin Xing,Yude Wang
Triethylamine (TEA) serves as a key indicator of fish spoilage, and its accurate detection is essential for assessing fish freshness. However, existing TEA gas sensors often suffer from low sensitivity, sluggish response/recovery kinetics, and high operating temperatures. To address these limitations, this study, for the first time, integrates polyoxometalate-based metal-organic frameworks (POMOF) with ZnO via heterojunction engineering to construct a POMOF-ZnO heterojunction gas sensor. At an operating temperature of 140 °C, the sensor exhibits outstanding performance toward 10 ppm TEA, including a high response value (64.54), fast response/recovery times (49/108 s), excellent selectivity, and good long-term stability over 32 days. Material characterization reveals that the heterojunction formed between POMOF and ZnO significantly increases the number of active sites on the material surface. Furthermore, combining density functional theory (DFT) calculations, current-voltage (I-V) measurements, and in-situ Fourier transform infrared (FTIR) analysis, the underlying gas-sensing mechanism is systematically and comprehensively discussed. The practical applicability of the sensor is demonstrated by its successful detection of TEA released from crucian carp during room-temperature storage, highlighting its potential for rapid assessment of fish freshness. This work presents a novel approach for designing high-performance gas sensors based on POMOF-ZnO heterojunctions for fish freshness evaluation.
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COLLOIDS AND SURFACES B-BIOINTERFACES
·
2026
·
IF 5.9
Yanzhu Guo,Ze Lalai A Di Li,Qian Chen,Yuxin Wang,Jing Zhang,Wenjuan Liu,Xuebin B Yang,Fuxiang Song,Bin Liu
Dual surface functionalization of ZnO NPs with QPEI and TA fabricates two novel dental resin nanofillers. • 2 wt% functionalized ZnO NPs endow dental resins with balanced physicochemical and biological performances. • QPEI-modified ZnO NPs confer excellent antibacterial ability against Streptococcus mutans to composites. • TA-functionalized ZnO NPs significantly enhances the calcium-phosphate deposition capacity of dental resins. • The multifunctional composites exhibit good cytocompatibility and great potential for secondary caries prevention. To impart antibacterial activity and calcium-phosphate deposition capability to dental resin composites (DRCs) and thereby reduce the risk of secondary caries, zinc oxide nanoparticles (ZnO NPs) were surface-functionalized with quaternized polyethyleneimine (QPEI) and tannic acid (TA), yielding two functional nanofillers, termed ZQ and ZT, respectively. The modified nanoparticles were incorporated into DRCs, and their physicochemical properties, cytocompatibility, antibacterial performance, and calcium-phosphate deposition behavior were systematically evaluated. The results demonstrated that composites containing 2 wt% functionalized nanoparticles (DZQ2 and DZT2) achieved the most balanced overall performance. Both materials satisfied the ISO 4049 curing-depth requirement and exhibited enhanced mechanical properties, favorable hydrolytic stability, and good cytocompatibility, with cell viabilities exceeding 80%. Functional evaluation revealed distinct biological effects associated with the two surface modification strategies. DZQ2 exhibited strong antibacterial activity against Streptococcus mutans (88.14 ± 1.70%), whereas DZT2 promoted greater calcium-phosphate deposition, showing a higher Ca/P ratio (1.08) than DZQ2 (0.83) after 28 days of immersion in artificial saliva. Overall, surface functionalization of ZnO nanoparticles provides an effective strategy for tailoring the biological performance of dental resin composites. The developed materials combine favorable physicochemical properties, antibacterial activity, and calcium-phosphate deposition capability, demonstrating potential as multifunctional restorative materials for reducing the risk of secondary caries. Download: Download high-res image (240KB) Download: Download full-size image
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
·
IF 6.7
Zhiqiang Tang,Yusi Wang,Yirui Xu,Kangwu Zheng,Weixiang Sun,Tongtong Xuan,Wei Li,Haoran Zhang,Bingfu Lei,Xuejie Zhang
By adjusting the ZnO content to modulate the glass network structure, self-crystallization of the CsPbBr 3 QDs in borosilicate glass was induced. • The prepared CsPbBr 3 QDs@glass exhibits an IQE and EQE of 39.8% and 29.6% upon 455 nm excitation, respectively. • The prepared CsPbBr 3 QDs@glass demonstrates favorable thermostability and water‑resistant performance. CsPbBr 3 perovskite quantum dots (QDs) are ideal candidate materials for next generation wide color gamut displays, yet their practical application has been hindered by inherent instability. This study achieves in-situ self-crystallization of highly stable and efficient CsPbBr 3 QDs in borosilicate glass (CsPbBr 3 QDs@glass) using ZnO as a glass intermediate oxide. Spectroscopic analyses (FT-IR, Raman, and XPS) reveal that Zn 2+ ions disrupt rigid Si-O-Si and B-O-B bonds to form weaker Zn-O-Si linkages, driving a [BO 4 ] to [BO 3 ] coordination transition. This depolymerization process creates a looser glass network enriched with non-bridging oxygen (NBO), significantly reducing steric hindrance and providing sufficient space for CsPbBr 3 QDs growth. The doping concentration was optimized to 12 mol% ZnO to balance the trade-off luminescence performance between network relaxation and concentration quenching. The optimized sample exhibits an internal quantum efficiency (IQE) as high as 39.8% upon 455 nm excitation. Notably, the CsPbBr 3 QDs@glass retains 52.1% of its initial intensity at 373 K and exhibits negligible attenuation upon cooling. Furthermore, it preserves approximately 97.0% of its luminescence performance even after 10 days of water immersion. Finally, a white LED backlight strip fabricated with the composite exhibits a wide color gamut reaching 124.2% NTSC and 89.4% Rec. 2020 coverage. Assembled into a display screen prototype, the device produces significantly more saturated, vivid green tones than mainstream commercial displays.
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International Journal of Self-Propagating High-Temperature Synthesis
·
2026
·Vol. 35
·期 3
·165-172
·
IF 0.6
Kim S.-J.,Kim R.-J.,Sin C.-N.,Rim T.-S.
ZnO-based pigments doped with Co and Mn ions were synthesized via a self-propagating combustion method using Gingko biloba leaves as a bio-derived fuel. Thermogravimetric analysis confirmed an effective combustion interaction between the metal nitrates and the leaf-derived fuel, validating the combustion synthesis process. X-ray diffraction results revealed the formation of single-phase hexagonal wurtzite ZnO for all samples, with successful incorporation of dopant ions without secondary phase formation. The synthesized powders exhibited porous agglomerated morphologies resulting from gas evolution during the combustion process, while FTIR analysis confirmed the formation of Zn–O bonds and the effective removal of organic species after calcination. Optical characterization demonstrated that transition-metal doping significantly modifies the visible and near-infrared reflectance properties of ZnO pigments, producing green Co-doped and black-brown Mn-doped pigments with relatively high NIR solar reflectance. These results indicate that bio-fuel-assisted combustion synthesis provides a simple and effective route for producing functional ZnO-based pigments with tunable optical properties for potential application in thermally functional coating materials.
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JOURNAL OF ELECTRONIC MATERIALS
·
2026
·
IF 2.8
Hou Dusong,Gao Danhong,Liu Hongwei,Deng Hanling,Lu Qianyao,Xiong Fan,Shao Hengwei,Lu Yuanyuan,Wang Mengxin,He Xinjian,Huang Sheng
The advancements in flexible display technology impose stringent demands on the optical properties and environmental stability of perovskite luminescent materials. Addressing the core challenges of poor environmental stability and optical performance degradation in methylammonium lead bromide (MAPbBr 3 ) quantum dots, this study proposes a dual-stability strategy combining “internal crystallization regulation” with “external physical protection.” A ZnO/MAPbBr 3 /PVDF composite film was prepared through synergistic modification with zinc oxide (ZnO) and polyvinylidene fluoride (PVDF), with the optimal ZnO content identified as 40 μL. Under these conditions, the composite film exhibited a green light emission full width at half maximum (FWHM) as low as 19.88 nm and a photoluminescence quantum yield (PLQY) of 76.06%, demonstrating high color purity. After heating at 100°C for 60 min, the PL intensity decayed by only 30%, and after 168 h of immersion in water, it retained 65% of its initial PL intensity, indicating significantly enhanced environmental tolerance. When this film served as the green conversion layer integrated with red CsPbI 3 quantum dot films and GaN blue LEDs to form a white light-emitting diode (WLED), the device achieved a color gamut coverage of 126% of the NTSC standard and 94% of the Rec. 2020 specification. Research indicates that ZnO enhances crystalline integrity by regulating MAPbBr 3 nucleation and growth, while PVDF forms a compact hydrophobic barrier. Their combined effect enhances both the film’s optical performance and environmental stability, enabling WLEDs with ultrawide color gamut that meet the requirements of high-performance flexible display and lighting applications.
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