Article
Polymer Science
Ai-Ling Yan, Chia-Wei Chang, Tsung-Hung Tsai, Meng-Ru Huang, Kuan-Ting Lin, Vamsi Krishna Karapala, Jhih-Hao Ho, Wei-You Dai, Jiun-Tai Chen
Summary: The template wetting method is commonly used for preparing one-dimensional polymer nanostructures, which has wide applications. In this study, patterned and anti-patterned azopolymer (PAzo) nanoarrays are fabricated via the light-induced nanowetting method. By converting trans-PAzo to cis-PAzo using UV lights, the PAzo polymers can undergo reversible solid-liquid transitions. Patterned PAzo nanoarrays can be generated by covering PAzo films with photomasks and anodic aluminum oxide (AAO) templates, followed by shining UV lights. Anti-patterned PAzo nanoarrays are generated by selectively removing cis-PAzo films through solvents after covering PAzo films with photomasks and illuminating UV lights.
JOURNAL OF POLYMER SCIENCE
(2023)
Article
Chemistry, Physical
Yuhong Cui, Zihao Liu, Xuexiang Li, Jianquan Ren, Yabin Wang, Qiuyu Zhang, Baoliang Zhang
Summary: Reasonable control of the composition and structure of porous nanomaterials is essential for improving its electromagnetic wave absorption performance. The heterogeneous trimetal Co@ZnO/Ni@NC nanocage prepared in this study shows excellent absorption performance with an effective absorption bandwidth of 12.6 GHz. The synergistic effect of the three metal components and the hollow structure optimization contribute to enhancing the absorbing performance of the nanocage.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Chang Wan Kang, Dong-Min Lee, Jina Park, Sohee Bang, Sang-Woo Kim, Seung Uk Son
Summary: This study focused on the preparation of core-shell nanospheres by coating piezoelectric ZnO nanorod aggregates with triboelectric microporous organic polymer (MOP) for enhanced energy harvesting performance. The resulting piezo-triboelectric nanogenerators (PTENGs) showed high peak-to-peak voltages and power densities, as well as excellent durability, making them efficient power sources.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Jinsong Sun, Jinxing Cao, Xiaohong Jiang
Summary: In this study, Bi-doped ZnO nanoarray was successfully prepared to enhance the photoelectrochemical performance of ZnO as a photoanode. Analysis showed that when the doping concentration was 5%, the fluorescence intensity was the lowest, corresponding to the lowest carrier recombination rate and the best photoelectric catalytic effect.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Dongna Zou, Ruxangul Jamal, Tursun Abdiryim, Lielie Liu, Haile Liu, Nana Fan
Summary: The ZnO-NRs/poly(EDOT-Pyridine-EDOT) core/shell heterostructure nanoarrays were prepared by electrochemical polymerization and formed a p-n heterojunction UV photodetector. The results showed that the ZnO-NRs/poly(BPE) heterojunction effectively improved the response performance, with the highest photoresponsivity under 5 V bias voltage.
Article
Chemistry, Physical
Jia Hui Chen, Yvonne Shuen Lann Choo, Wei Ting Gao, Xue Lang Gao, Zhi Hong Cai, Jia Jun Wang, Qiu Gen Zhang, Ai Mei Zhu, Qing Lin Liu
Summary: In this study, Troger's base microporous anion exchange membranes (AEMs) with hyperbranched structure were prepared by superacid catalysis. The introduction of hyperbranched structure improved the water uptake and OH- transport of the AEMs, leading to enhanced performance in alkaline fuel cells.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Energy & Fuels
Guozhuo Wang, Yoshio Utaka, Shixue Wang
Summary: This study aimed to improve the cold start characteristics of PEFCs by applying patterned wettability to its MPL and GDL. Experimental results showed that the dual H-MPL and H-GDL exhibited the best performance for liquid exclusion and quick water movement in a membrane electrode assembly.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Engineering, Electrical & Electronic
Pinhua Zhang, Wenhao Di, Kaifeng Xue, Guangliang Cui
Summary: Cu2O/ZnO heterostructure ordered nanoarrays were prepared for H2S detection in biological samples, showing good sensitivity and selectivity. The sensor, with good portability, is a promising candidate for high-performance sensors in disease diagnosis and environmental assessment.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Physics, Applied
Houshan Mei, Xianghong Liu, Yixin Song, Bing Teng, Degao Zhong, Jun Zhang
Summary: Piezo-electrocatalytic semiconductors with the piezoelectric effect and catalytic properties have great potential in various applications. In this study, a flexible piezo-electrocatalytic sensor based on ZnO nanoarrays is developed for ultrasensitive detection of hydrogen peroxide. The in situ growth of ZnO nanoarrays on flexible gold interdigital electrodes effectively combines electrical excitation and external strain-induced piezoelectric polarization to enhance catalytic reactions. The sensor exhibits unexpectedly high sensitivity and can utilize external mechanical energy to improve chemical and biologic detection.
APPLIED PHYSICS LETTERS
(2023)
Article
Physics, Fluids & Plasmas
Fanbo Sun, Nicholas E. Brunk, Vikram Jadhao
Summary: Deformable nanoparticles can spontaneously reconfigure in response to environmental cues, offering opportunities for designing reconfigurable materials. By solving for the low-energy shapes of charge-patterned deformable NPs, different shape transitions are observed in response to changes in surface charge coverage and ionic strength. These findings have implications for the design of responsive nanocontainers and reconfigurable materials.
Article
Chemistry, Multidisciplinary
Yingzheng Yin, Jie Ding, Yue Cao, Shaozhi Li, Qingbo Ma, Jinyang Li, Xiaoling Xu, David Hui, Zuowan Zhou
Summary: It is necessary to develop a safe and efficient technique for disinfection of drinking water to prevent waterborne pathogens of infectious diseases. In this study, ZnO nanoarray electrodes with different sizes were investigated for low-voltage and high-efficiency electroporation disinfection. The results showed that ZnO nano-pyramid with small tip width and proper length achieved over 99.9% disinfection efficiency against Escherichia coli under 1V and a flow rate of 10 mL/min (contact time of 1.2 s). The suitable size of the nanoarray for electroporation disinfection was optimized by establishing the correlation between four kinds of ZnO nanoarrays and their efficiency, which can guide the preparation of next-generation electroporation-disinfecting electrodes.
NANOTECHNOLOGY REVIEWS
(2023)
Article
Electrochemistry
Chenzhong Yao, Huimin Ren, Bohui Wei, Chunxi Yang, Li Ma
Summary: WO3@ZnO core-shell nanoarrays with a Z-scheme heterojunction structure were fabricated by combining electrodeposition and dropping process and used as photoanodes for the production of hydrogen peroxide (H2O2). The WO3@ZnO nanoarray photoanode exhibited a significantly higher photocurrent density (1.57 mA·cm(-2)) compared to the pure ZnO nanoarray photoanode. Under AM 1.5 G (100 mW·cm(-2)) conditions, the WO3@ZnO photoanode achieved a high photoconversion efficiency of 0.53% and Faradic efficiency of 33% for H2O2 production. This work provides an effective approach for the application of Z-scheme heterojunction in the photoelectrochemical synthesis of H2O2.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Cunyi Zhao, Yang Si, Shenghan Zhu, Kevin Bradley, Ameer Y. Taha, Tingrui Pan, Gang Sun
Summary: The heterogeneous structures of polyacrylonitrile nanofibrous membranes significantly affect the diffusion behavior of large molecules, with protein diffusion behavior being predictable only when the membrane pore size is at least 1000 times higher than the protein size.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
Geping He, Ben Zhang, Huijun HuangFu, Cunshe Zhang, Di Wang, Yuxiang Bai, Yuanmei Mi, Donghao Zheng
Summary: In this study, CeO2/ZnO nanoarray electrodes were successfully synthesized using two different methods, and the electrochemical performances of C/Z NSA were found to be twice as large as C/Z NRA due to its larger contact area.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Multidisciplinary
Houshan Mei, Jiayue Xie, Zishuo Li, Chengming Lou, Guanglu Lei, Xianghong Liu, Jun Zhang
Summary: Metal oxide nanostructures, especially ZnO@ZIF-8 core-shell nanoarrays, show significantly enhanced electrochemical performance in H2O2 detection, with wider linear range, higher sensitivity, and lower detection limit.
