MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
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2022
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IF 4.644
Libo Yu,Zhen Li
It is well known that the microstructure of photoanode materials has direct influence on light harvesting and charges recombination in dye sensitized solar cells (DSSC). However, design of photoanode materials for efficient light harvesting and electron transport is still in challenge. Therefore, we developed a hierarchical microstructure of multi shelled ZnO hollow microspheres (MS ZnO HMS) decorated TiO 2 nanotree (NT) for DSSCs application with aim to take advantages of enhanced light scattering and enlarged specific area offered by MS ZnO HMS and reduced charges recombination provide by TiO 2 NT. The morphology, microstructure and crystalline of ZnO HMS and TiO 2 NT have been characterized by SEM, TEM and XRD , confirming the successful building of MS ZnO HMS decorated TiO 2 NT. I–V tests show that significant enhancement of short-circuit current density (J sc ) can be achieved by controlling shell numbers of MS ZnO HMS and combining MS ZnO HMS with TiO 2 NT. As a result, the triple shelled ZnO HMS (TS ZnO HMS) decorated TiO 2 NT (TS ZnO HMS/TiO 2 NT) improve the power conversion efficiency (PCE) to 7.40%, which is 138% and 40% higher than DSSCs based on TiO 2 NT (3.11%) and TS ZnO HMS (5.27%). IPCE , OCVD and EIS measurements indicate that the combination of TS ZnO HMS with TiO 2 NT contribute to the improvement of light harvesting efficiency and prolonging of electron lifetime .
研究领域:
材料科学
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光伏技术
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纳米技术
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能源材料
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高影响因子
JOURNAL OF MATERIALS SCIENCE
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2026
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IF 3.9
Feng Min,Bai Zhongchen,Chen Qixin,Peng Xishun,Li Xinghua,Zhang Zhengping
In this study, we selected CsPbBr 3 quantum dots (QDs) as a modification layer of CsPbBr 3 /Carbon interface to facilitate their charge transfer for enhancing the photoelectronic conversion efficiency of ZnO/CsPbBr 3 /carbon solar cell. The results demonstrated that CsPbBr 3 QDs layer simultaneously improved film morphology, composition, and optoelectronic properties. This was achieved by filling pinholes, enlarging grain size, suppressing secondary phases, tuning elemental stoichiometry, enhancing electron transport, and reducing non-radiative recombination. The optimized device achieved an increase in PCE from 5.46% to 7.27%. This method and structure of solar cell we proposed in this paper provides a novel strategy for improving high-performance and high-stability PSCs.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2026
·Vol. 37
·期 7
·517
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IF 3.2
Zhu Guosong,Li Xiaoyuan,Pan Wenqian,Zhou Wei,Luo Heng,Hu Yue,Fan Xiaomeng,Li Yang
As electromagnetic environments become more complex, the design of novel electromagnetic wave absorbers (EWMs) that combine low-frequency absorption with multi-frequency response remains a significant challenge. Experimental validation demonstrates that controlling the crystallinity and morphology of the ZnO coating layer through process temperature can significantly influence the electromagnetic properties of YCo composite materials. Nevertheless, the establishment and description of the intricate relationship between process temperature and electromagnetic response remains a formidable challenge. In order to address this issue, a data-driven modeling and inverse design framework (SSA-GRNN-PSO) integrating sparrow search algorithm (SSA), generalized regression neural network (GRNN), and particle swarm optimization (PSO) is proposed based on limited experimental data. This framework facilitates precise prediction of the complex electromagnetic parameters of ZnO@YCo composites at varying processing temperatures. When combined with a multilayer structural design concept, it achieves multi-band inverse design. The final composite material, with a thickness of 19.1 mm, exhibited strong multi-band absorption characteristics, with a bandwidth of 7.452 GHz, and a reflection loss of − 25.47 dB in the 2–18 GHz range. Moreover, an optimized design with a thickness of 5.4 mm was achieved, which features a bandwidth of 7.416 GHz and a reflection loss of − 15.72 dB.
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Journal of Materials Chemistry A
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2015
·Vol. 3
·期 43
·21569-21577
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IF 7.443
Zhaoqiang Li,Longwei Yin
A sandwich-like structure with reduced graphene oxide (RGO) wrapped MOF-derived ZnCo2O4–ZnO–C polyhedrons on nickel foam as an anode for high performance lithium ion batteries (LIBs) is for the first time reported via simply growing MOFs on Ni foam, and wrapping graphene oxide nanosheets on MOFs, and then annealing under a N2 atmosphere. It should be noted that the MOF-derived porous products are composed of carbon-coated spinel ZnCo2O4–ZnO nanoparticle polyhedrons. When tested as anodes for LIBs, the unique RGO/ZnCo2O4–ZnO–C/Ni sandwich-structured LIB anodes exhibit superior coulombic efficiency, excellent cycling stability and rate capability. The in situ formed carbon layers outside the ZnCo2O4–ZnO act as not only a conductive substrate but also a buffer layer for volume changes. The open pores in ZnCo2O4–ZnO–C polyhedrons provide sufficient electrolyte as well as serve as cushion space to further alleviate volume changes. The RGO nanosheets act as a flexible protector to firmly fix polyhedrons on the Ni foam, as well as a conductive substrate to wire up all the polyhedrons. The interconnected carbon layers and two high conductive substrates (RGO and Ni foam) together form an unhindered highway for charge transfer during discharge/charge processes, promising good electrochemical performance.
研究领域:
材料科学
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电化学
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纳米材料
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能源存储
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功能材料
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固态化学
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电极工程
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高影响因子
APPLIED SURFACE SCIENCE
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2023
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IF 6.7
Qiqi Wu,Wentao Zhang,Chen Qu,Fei Yuan,Yi Huang,Xianfei Chen,Ruoxi Zhang
The stainless steel wire mesh supported Co 2+ -doped ZnO with lauric acid modification (LA/Co 2+ -ZnO@SSM) was prepared through hydrothermal method for dual-functional oil/water separation performance and high photocatalytic activity. By changing the immersing time of LA, the surface polarity of the LA/Co 2+ -ZnO@SSM composite membrane could be efficiently adjusted from hydrophilic to hydrophobic. The superhydrophobicity of LA/Co 2+ -ZnO@SSM was achieved after LA immersing 120 min, and the WAC value reached as 156.6 ± 3.0°. In different oil/water mixture systems, the LA/Co 2+ -ZnO@SSM composite membrane exhibited excellent oil/water separation ability and separation throughput, and the separation efficiency still remained above 90 % after 10-cycle separation. Meanwhile, the LA/Co 2+ -ZnO@SSM composite also maintained an excellent photocatalytic activity, and the photocatalytic efficiency for methylene blue degradation reached 90 %. Even in the solution of complex organics and oil, the photocatalytic degradation efficiency was still above 75 %. In addition, LA/Co 2+ -ZnO@SSM composite membrane also showed a low adhesion, good flexibility and anti-pressure ability. All results indicated that the dual-functional LA/Co 2+ -ZnO@SSM composite membrane with visible light-driven photocatalysis and oil/water separation performance could be used for practical complex wastewater as a novel purification strategy.
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FOOD CHEMISTRY
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2023
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IF 8.8
Yue Yuan,Huafeng Tian,Ruru Huang,Hongtao Liu,Hua Wu,Gaiping Guo,Junsong Xiao
To extend the shelf life of sweet cherries ( Prunus avium L . ) and considering the environmental problems caused by traditional packaging materials, novel Zein/Gelatin-proanthocyanidins-zinc oxide nanoparticles (ZE/GE-PC-ZnO) and Zein/Gelatin-gallic acid-zinc oxide nanoparticles (ZE/GE-GA-ZnO) protein-based composite nanofiber films were prepared by electrospinning. According to the results, ZE/GE-PC-ZnO and ZE/GE-GA-ZnO films' contact angles were higher than those of Zein/Gelatin film by 28.91% and 21.27%, and their antioxidant activities were 5 and 9 times higher, respectively. Moreover, ZE/GE-PC-ZnO film showed good inhibitory activity against B. cinerea . On the eleventh day of the cherry packaging test, compared to unwrapped cherries, the losses of weight and firmness of wrapped fruit were reduced by more than 20% and 60%, respectively. Respiration time was delayed by 5 days, and the peak of ethylene release was decreased by nearly half. In conclusion, these two nanofiber films were viable packaging materials that fulfilled global strategies for green development.
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PubMed
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2023
·Vol. 30
·期 15
·43702-43713
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IF 5.8
Guo Jin,Sun Yihua,Luo Qiuzi,Zhang Jiangyu,Fang Liang
Innovative solar-driven heterostructure photocatalysts are promising for removing the organic contaminants in the water environment. In this work, a sequence of well-defined Z-scheme Ti-Ga co-doped ZnO/g-C 3 N 4 (TGZ/CN) heterostructure photocatalysts were developed via a simple sol–gel method and the single-phase dispersion method in order to realize the cooperative improvement from the Ti/Ga co-doping and construction of heterostructure. The synthesized samples were analyzed by a variety of characterization techniques, and the photocatalytic activity was assessed by photodegradation of methylene blue (MB) under visible light irradiation. Compared to the ZnO and g-C 3 N 4 , the TGZ/CN composite demonstrated higher photocatalytic performance for the degradation of MB indicating an efficient photocatalytic degradation rate of 95.4% in 105 min under visible light. Moreover, the TGZ/CN photocatalyst exhibited excellent stability after five cycles of MB photodegradation. Furthermore, the as-prepared composites’ possible photocatalytic mechanism was discussed in detail. The improved photocatalytic performance primarily resulted from the effectively reduced band gap of ZnO after Ti/Ga co-doping and the facilitated separation of photoexcited e − /h + pairs caused by the construction of Z-scheme heterojunction. This work offers novel insights in developing hybrids with highly efficient photocatalytic activity towards future environmental applications. Graphical abstract
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PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2022
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IF 9.221
Bingsheng Du,Fanfan Yan,Xiaohui Lin,Chengyao Liang,Xuezheng Guo,Yiling Tan,Hao Zhen,Chengjiu Zhao,Yijie Shi,Evans Kibet,Yong He,Xi Yang
Two-dimensional metal-organic framework nanosheets , as a new member of the two-dimensional family, are attracting increasing research interest in various fields. Herein, a uniform two-dimensional Zn-BTC MOF nanosheet with a thickness of 14 ± 2 nm was synthesized through a simple, efficient, and scalable sonication-assisted bottom-up strategy. The ZnO nanoparticles were used as the Zn source, which can be corroded by H 3 BTC to form Zn-BTC MOFs under sonication conditions. The morphologies of Zn-BTC MOFs can be modulated from nanosheets to nanorods by changing the content of H 3 BTC. The crystal growth process is dominated by the thermodynamics of sonication and the stoichiometric ratio of the generated Zn 2+ and H 3 BTC, and the crystal growth mechanism was elaborated by the oriented attachment. Consequently, a chemiresistive gas sensor based on Zn-BTC nanosheet derivatives was fabricated to detect ppb-level acetone . Notably, the experimental detection limit of concentration could reach as low as 100 ppb of acetone due to the functional surface, and the dynamic response linearity reached 99 %. Our work explored a new method of synthesizing two-dimensional Zn-BTC MOF, and the fabricated gas sensing device demonstrated promising potential in gas sensing fields.
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高影响因子
JOURNAL OF LUMINESCENCE
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2022
·
IF 4.171
Boxu Xu,Chao Song,Jie Song,Rui Huang,Zhenxu Lin,Yi Zhang,Shaomin Lin,Jun Song
In this study, a series of well-crystallized Yb 3+ /Er 3+ /Tm 3+ -tridoped Y 2 O 3 –ZnO ceramic phosphors were prepared using sol–gel synthesis, and the phosphor structures were studied using X-ray diffraction, scanning electron microscopy, and thermogravimetric analysis . The phosphors had excellent physical stability and porous structure. All phosphors generated blue, green, and red emission bands attributed to Tm: 1 G 4 → 3 H 6 , Er: 2 H 11/2 ( 4 S 3/2 )→ 4 I 15/2 , and Er: 4 F 9/2 → 4 I 15/2 radiative transitions , respectively. The emissions were intensified twice by tuning the Tm 3+ ratio in the host matrix Y 2 O 3 and ZnO parts. The color coordinates were adjusted by tuning both the Tm 3+ concentration and the excitation laser pump power to shift the color coordinates and only enhance the brightness, respectively. Meanwhile, heating phosphors can also linearly adjust the color coordinates of the luminescence. Therefore, it can also be used as a fluorescence thermometer in the field of temperature sensor . The study findings will broaden the phosphor practical application potential.
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高影响因子
SOLID STATE SCIENCES
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2022
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IF 3.752
Jyunhong Shen,Antong Shi,Mengfan Wu,Hongyu Zhang,Zhuwu Jiang
For the advanced treatment of micropollutants from wastewater, this study synthesized a ternary Ag/ZnO/ZnAl‒LDH composite photocatalyst with performance optimization based on the Taguchi approach. The optimal synthesis parameters were statistically determined as the Ag doping amount of 5 wt%, Zn 2+ and Al 3+ with a molar ratio of 3:1, Ag/ZnO and ZnAl‒LDH with composite ratio of 3:2, and PEG-200 dosage of 25 mL. The optimally synthesized Ag/ZnO/ZnAl‒LDH achieved the efficient degradation of bisphenol A (BPA) under visible light irradiation, and the reaction rate constant was about 4.8-, 2.2- and 12.0-fold higher than that of ZnO, Ag/ZnO and ZnAl‒LDH, respectively. As proved by various characterizations, the enhanced photocatalytic performance of Ag/ZnO/ZnAl‒LDH can be attributed to the improvements of optoelectronic properties, such as the widened visible light responsivity and facilitated charge transfer, thus resulting in a significant increase of hydroxyl radicals (·OH) formation. Fluorescence measurements and radical quenching experiments indicated that ·OH mainly contribute to the degradation of BPA, and the oxidation of H 2 O by holes was the dominant formation pathway. According to the above results, this study summarized and proposed the enhanced photocatalytic mechanism of Ag/ZnO/ZnAl‒LDH for ·OH production and BPA removal.
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CHEMICAL ENGINEERING JOURNAL
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2022
·
IF 16.744
Ziyang Zhou,Sepideh Pourhashem,Zhengquan Wang,Jizhou Duan,Ruiyong Zhang,Baorong Hou
In this research, the amino-silane functionalized ZnO quantum dots (F-ZnO QDs), graphene oxide (F-GO), and their nanohybrids (F-GO@ZnO QDs) are used as effective nanofillers to improve the anti-corrosion and anti-fouling properties of waterborne epoxy coatings. The synthesized nanomaterials before and after silane functionalization are characterized by X-ray diffraction, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and transmission electron microscopy. Then, the nanocomposite waterborne epoxy coatings loaded with 0.1 wt% F-ZnO QDs, F-GO, and F-GO@ZnO QDs are prepared through solution mixing method. The effects of different nanofillers on the surface roughness, water contact angle, pull-off adhesion strength, fracture surface, and corrosion resistance of the nanocomposite coatings are considered. The results reveal that the uniformly dispersed F-GO@ZnO QDs in the fracture surface of the coating could provide the highest barrier and corrosion resistance on the steel substrates. Meanwhile, the nanocomposite coatings have higher water contact angle and higher adhesion strength to the substrates. The anti-bacterial and anti-fouling properties of the nanocomposite coatings have also been confirmed. The multifunctional performance of the epoxy/F-GO@ZnO QDs is assigned to the synergy effect between the GO, ZnO QDs, and amino-silane; exhibiting the importance of the nanohybrids to combine the advantages of different nanomaterials in one coating system.
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高影响因子
JOURNAL OF LUMINESCENCE
·
2021
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IF 3.599
Cen Zhang,Xiaonan Zhu,Fei Gao,Liu Yang,Weizhen Liu
The development of wavelength adjustable electrically driven panchromatic display light-emitting devices (LEDs), a future direction for lighting sources, still seems necessary because of great development prospects and practical significance. Herein, perovskite quantum dots (QDs) of CsPbBr 3 and CsPbI 3 with multi-color luminescence feature were employed into n-ZnO/p-GaN nano-heterojunction LEDs. A thin polystyrene cover layer was intentionally inserted between CsPbBr 3 and CsPbI 3 to prevent the undesired halogen anion-exchange reaction. A color-tunable electroluminescence (EL) could be achieved by changing the molar ratio of these two types of perovskite QDs. By further optimizing the molar ratio between CsPbBr 3 and CsPbI 3 , that is, the evolution of the share of red, green and blue-violet luminescence in EL spectra, a stable white light emission was obtained. The current research not only achieves multi-color EL emissions in a three-dimensional nano-architecture, but also proposes an effective and clever strategy for preparing and developing single-chip white LEDs.
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