Journal of Nano Research
·
2024
·
IF 0.8
Yong Li,Ya Liang Chen,Yan Qun Shao
Photocatalysis properties enhanced by metal and organic polymer has been received more interest because of their ability to directly or indirectly degrade pollutants. The effect of PDA (polydopamine) and Ag nanoparticles on the different phases of ZnO to degrade organic dyes under visible and UV-vis light was investigated. ZnO@PDA, ZnO-Ag, and ZnO-Ag@PDA nanoparticles were synthesized. It’s shown that Ag particles with sizes of less than 20 nm were deposited evenly on the ZnO. There were a few changes in the structure of ZnO@PDA or ZnO-Ag @PDA. When the ZnO was coated by PDA, the photocatalytic activity could be enhanced. The photocatalytic activity under UV-vis and visible light of the ZnO@PDA were effectively improved. The degradation rate of ZnO-Ag@PDA was 97.9% under UV-vis light for 20 mins, which was 16.1% higher than that of ZnO. The photocatalytic activity of ZnO-Ag@PDA reached the maximum after polymerizing for 2 hours. The photocatalytic efficiency of ZnO-Ag@PDA-2h under UV-vis for 30 minutes can reach higher than 99.01%. The photocatalytic performance decreased rapidly with the increasing cycles. When the number of cycles was 5, the degradation rate was 65.84%. Afterward, the degradation rate changed small and became stable.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2017
·Vol. 19
·期 8
·5806-5812
·
IF 4.123
Jinpeng Lv,Yuan Liu
The simultaneous introduction of shallow acceptors and elimination of donor compensation is the key issue toward achieving p-type ZnO. Herein, through accurate control of the Li dopant configuration and systematic spectroscopy characterization, we obtain direct evidence that Li doping creates isolated VZn in ZnO with a luminescence peak around 414 nm (∼3.0 eV), and at the same time, removes donors. Interestingly, the same defect emission is also created by simple H2O2 treatment and appeared in a ZnO single crystal with abundant metal vacancies, unambiguously demonstrating its shallow acceptor characteristic.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Functional Materials Letters
·
2023
·
IF 1.3
Pu Qin,Chengyan Zhu,Malik Ashtar,Ming Li,Yuan Liu,Mingming Chen,Dawei Cao,Ying Yang
ZnO is one of the most popular materials in UV photodetectors, but its low switching and long attenuation time seriously hinder its practical application. In this work, the performance of PZT/ZnO planar photodetectors is optimized by using the ferroelectric polarization of PZT thin films. The results show that the residual polarization field of PZT affects the electron arrangement in ZnO film, making ZnO in a depleted state, reducing the dark current of resulted photodetectors, and influencing the carrier life. By inhibiting recombination, the photocurrent is increased, and the switching ratio of the ZnO photodetector is increased by 5 times, and more importantly, the optical responsivity increases by 7 times to 1.015 A/W. This work provides a simple and feasible method for ferroelectric polarization to control the performance of two-dimensional material photodetectors.
研究领域:
材料科学
·
光学工程
✓ 已验证
DOI
高影响因子
APPLIED CLAY SCIENCE
·
2023
·
IF 5.6
Haiyan Wu,Yuhang Meng,Menghan Yu,Huaming Yang
The overuse or abuse of antibacterial drugs has led to serious health problems. At present, among various antimicrobial materials (natural, organic, inorganic, etc.), inorganic antimicrobial materials, especially ZnO, have received widespread attention. However, an important factor that influences the function of nanoparticles is agglomeration. The agglomeration-sensitive nature of ZnO compromises its antibacterial properties . Here, talc is used as a substrate to control the size and dispersion of ZnO, forming composite minerals with excellent antibacterial properties against both Escherichia coli and Staphylococcus aureus . According to transmission electron microscopy , ZnO/talc is easily adhered to bacterial cells, whereas atomic force microscopy reveals that antibacterial effects are caused by non-covalent interactions between ZnO/talc and bacterial membranes. The comprehensive investigation of antibacterial performance and interfacial interaction is conducive to our understanding of the antibacterial mechanism of inorganic compounds , and also provides new perspectives on the biological effects of inorganic nanomaterials .
研究领域:
材料科学
·
微生物学
✓ 已验证
产品关联
DOI
高影响因子
Coatings
·
2022
·Vol. 12
·期 6
·855
·
IF 3.236
Yu Yang,Guoqing Wang,Longlin Lei,Yangkai Xiong,Zhiqiang Fang,Lei Huang,Jinbo Liu,Daxiong Hu,Jianhe Liao
The accumulation of marine biological growth has irreversible negative effects on shipping and coastal fisheries. In this paper, a new antibacterial nanofiller—triazole fluoroaromatic hydrocarbon−modified nano−zinc oxide (ZnO−APTES−TRF)—was prepared by a Cu(I)−catalyzed azide–alkyne click chemical reaction. The modification of nano−ZnO with triazole ring fluoroaromatic hydrocarbons were testified by FT−IR, XPS, and EDS. The grafting rate of ZnO−APTES−TRF can reach 32.38%, which was verified by the TGA test. The ZnO−APTES−TRF was mixed with zinc acrylate resin to produce a low surface energy antifouling coating with a surface water contact angle of 106°. The bactericidal rate of ZnO−APTES−TRF againstEscherichia coli,Staphylococcus aureus, andPseudoalteromonassp. can reach more than 98% due to the synergistic effect of triazole and fluorine. The 120−day marine experiment shows that the low surface energy antifouling coating of ZnO−APTES−TRF/ZA is expected to be widely used in the field of marine antifouling.Keywords:antifouling;marine;ZnO;triazole;modification;hydrophobic
研究领域:
材料科学
·
海洋生物学
✓ 已验证
DOI
高影响因子
Small
·
2025
·
IF 12.1
Guangrong Qian,Renyuan Deng,Xiangmei Liu,Yi Wang,Jin Huang,Congyang Mao,Chaofeng Wang,Hanpeng Liu,Zhaoyang Li,Shengli Zhu,Hui Jiang,Zhenduo Cui,Yufeng Zheng,Shuilin Wu
The transmission of pathogenic bacteria via the contaminated surfaces of interactive touchscreens is an important route of infection. It is therefore imperative to develop a functional film with antibacterial properties to prevent cross-infection. In this paper, a bilayer thin-film structure composed of iron-doped and copper-doped zinc oxide (Fe-ZnO/Cu-ZnO) is synthesized through a spin coating technique based on sol-gel. The synergistic effects of metal ion doping, combined with the influence of the internal electric potential, during the photocatalytic reaction process, promote the separation and migration of photogenerated carriers. As a result, it notably boosts the photocatalytic properties. The nanofilm is demonstrated to achieve a rapid bactericidal effect (surpassing 90%) under sunlight irradiation. Furthermore, it is shown to completely kill bacteria after 20 min of illumination and to maintain excellent antibacterial performance (surpassing 90%) for a period of 30 days. Concurrently, the thin film displays both exceptional light transmittance (surpassing 90%) and noteworthy benefits, including environmental sustainability, cost-effectiveness, and the capacity for safe disinfection. The thin film exhibits considerable potential for implementation on surfaces subject to high-frequency public contact. It boasts extensive application prospects and serves as a foundational reference for the design of photocatalytic antibacterial thin films.
研究领域:
材料科学
·
纳米技术
·
光催化
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环境科学
·
表面工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2021
·Vol. 9
·期 31
·16889-16897
·
IF 12.732
Wei Pan,Yunfei Han,Zhenguo Wang,Chao Gong,Jingbo Guo,Jian Lin,Qun Luo,Shangfeng Yang,Chang-Qi Ma
Flexible organic solar cells (OSCs) will be a promising energy harvest approach for portable and wearable electronics. However, the efficiency of flexible OSCs, particularly the efficiency of flexible devices with an area larger than 1 cm2, is still limited due to the lack of good flexible electrodes and the inhomogeneity of the large-area films. In this work, higher sensitivity of the performance to the interface contact for large-area devices (1 and 4 cm2) than small area devices (0.09 cm2) was found in flexible OSCs with different areas. To address this issue, a bilayer electron transporting layer (ETL) combining a lower sol–gel ZnO and an upper ZnO nanoparticle layer was developed for silver nanowire (AgNW) electrode involving large-area flexible OSCs. The use of the lower sol–gel ZnO layer effectively filled the network voids and modified the surface energy of the AgNWs, which enabled the homogeneous coverage of the upper ZnO nanoparticle layer and enhanced carrier collection. Due to the more homogeneous films and improved interface charge collection, the use of the sol–gel ZnO and ZnO NP bilayer ETL has lowered the performance decrease during upscaling. A record efficiency of 14.29% and 13.08% for the 1 and 4 cm2 flexible OSCs was achieved.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2020
·
IF 6.182
Yinli Duan,Jing Ma,Jianan Dai,Liangsheng Qiang,Juanqin Xue
Very efficient and low-cost photocatalysts containing Indium hydroxide (In(OH) 3 ) anchored on zinc oxide (ZnO) with various morphologies (e.g., hexagonal, pyramids, elliptic, etc.) were synthesized using a hydrothermal approach. The strong interaction between In(OH) 3 and ZnO was investigated using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), N 2 adsorption-desorption, UV–vis diffuse reflectance spectroscopy (UV–vis DRS), and X-ray photoelectron spectroscopy (XPS). In(OH) 3 particles grew directly on the ZnO surface and strongly interacted with it, which contributed to the excellent photocatalytic performance of ZnO. A possible formation mechanism of the In(OH) 3 /ZnO nanostructures was proposed. Experiments on photodegradation of methylene blue (MB) showed that the photocatalytic activity of the In(OH) 3 /ZnO nanocomposites correlated with the material morphology. The highest MB removal efficiency by the In(OH) 3 /ZnO hybrid photocatalysts was 90.5% after 120 min exposure to the visible light. The significant improvement of photocatalytic activity of In(OH) 3 /ZnO hybrid can be attributed to their special structural features, which allowed for an extended spectral response as well as for enhanced separation of photogenerated charge carriers. The design principles of this hybrid material apply to other metal-oxide systems to widen variety of advanced material systems with multifunctional properties useful for sensing and other advanced applications.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2016
·
IF 4.758
Yang Li,Mingfei Jiao,Mujie Yang
ZnO nanoparticles or nanosheets have been in-situ grown on the substrate via a facile green approach featured with the hydrothermal treatment of electrospun nanofibers comprising polyvinyl alcohol and zinc acetate. The nanohybrids of ZnO with polypyrrole (PPy) were fabricated by the vapor phase polymerization of pyrrole on the surface of as-prepared nanostructured ZnO. The resulting nanohybrids were characterized by Fourier transform infrared spectroscopy, X-ray diffraction pattern, field emission scanning electron microscopy and high-resolution transmission electron microscopy and Brunauer–Emmett–Teller surface area measurements. Moreover, the electrical responses of the nanohybrids to NH 3 have been examined at room temperature. It was found that the nanohybrids revealed much higher response magnitude than either of the constituent component. Additionally, the morphology of ZnO affected the response magnitude of PPy/ZnO nanohybrids. The hybrids of ZnO nanosheets with PPy showed wide sensing range (0.5–200 ppm), very high response magnitude (relative resistance change of ∼20% towards 0.5 ppm of NH 3 ), good repeatability and selectivity. Attempts have been made to explore the gas sensing mechanism of the PPy/ZnO nanohybrids.
研究领域:
材料科学
·
传感器技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2013
·
IF 4.675
Zhicai Xing,Qingxin Chu,Xinbang Ren,Chenjiao Ge,Abdullah H. Qusti,Abdullah M. Asiri,Abdulrahman O. Al-Youbi,Xuping Sun
In this communication, for the first time, we demonstrate the electrodeposition of Ni 3 S 2 on ZnO (ZnO@Ni 3 S 2 ) array supported on nickel foam. We further demonstrate the direct use of ZnO@Ni 3 S 2 array as a binder-free electrode material for supercapacitors and this electrode exhibits a very high specific capacitance of 1529 F g −1 at a current density of 2 A g −1 , good rate capability and cycling stability.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2016
·Vol. 24
·期 6
·5179-5188
·
IF 2.76
Sun Jianzhang,Gao Baoyu,Zhao Shuang,Li Ruihua,Yue Qinyan,Wang Yan,Liu Siqi
It is confirmed that nano-ZnO (nZnO) has impact on environment and is considered as heavy metal pollutants. It is a new technology that applies coagulation process to simultaneous removal of the nanoparticles and heavy metals. Environmental chemical behavior of ZnO in water, such as the dispersion, aggregation, sedimentation, and dissolution of releasing metal ions, has been systematically studied in this paper. The result shows that three kinds of nZnO state such as compacted sediment, suspended, and released is separately 36.54 %, 40.61 %, and 22.86 %. Enteromorpha polysaccharide (Ep) was used together with polyaluminum chloride (PAC) in surface water purification. In order to study the mechanism of simultaneous removal of residual nZnO particles and Zn 2+ , coagulation process was further applied in this study. The evolution of flocs size, strength, and recovery ability and fractal structure due to Ep addition was systematically studied in this paper. Results indicated that PAC-Ep was efficient in removing nZnO and Zn 2+ , which leads to more than 95 % particles, 50–60 % natural organic matter (NOM) removed, and 35 % of resolved heavy metal ion adsorbing-chelation. Ep was an efficient coagulant aid in enhancing performance of coagulation and generating flocs with bigger sizes, faster growth rates, and higher recovery abilities. Additionally, the flocs formed by PAC-Ep presented a much looser structure than flocs formed only by PAC.
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研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Coatings
·
2018
·Vol. 9
·期 1
·15
·
IF 2.35
Jingbing Chen,Yunyun Ma,Huiping Lin,Qingzhu Zheng,Xinxiang Zhang,Wenbin Yang,Ran Li
Poor mildew resistance has limited the application of bamboo materials. In this work, ZnO/PMHS coatings were fabricated on bamboo timber surfaces by hydrothermal synthesis method and hydrophobic modification with poly(methylhydrogen)siloxane (PMHS). The surface chemical characteristics and microstructure of the bamboo before and after modification were investigated using Fourier transform infrared spectroscopy, scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffraction, and water contact angle (WCA). The morphology results indicated that ZnO on the surface of bamboo forms flower-like aggregations. The WCA of ZnO/bamboo increased from 65° to 142° after PMHS hydrophobic modification, indicating that the hydrophobicity of bamboo was significantly improved. The original bamboo had poor anti-mildew properties when exposed toTrichoderma viride,Aspergillus niger, andPenicillium citrinum.After depositing ZnO onto the surface of the bamboo, the anti-mildew properties were significantly improved. Furthermore, it was found that after PMHS hydrophobic modification, ZnO/bamboo had excellent anti-mildew properties when exposed to the three mold hyphae, which indicated that PMHS hydrophobic modification had a synergistic effect on the anti-mildew properties of bamboo with a ZnO coating.Keywords:bamboo;anti-mildew;ZnO;poly(methylhydrogen)siloxane;synergistic effect
研究领域:
材料科学
·
生物学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）