Article
Chemistry, Analytical
Bin Jiang, Wei Tao, Liupeng Zhao, Tianshuang Wang, Xiaomin Liu, Fangmeng Liu, Xu Yan, Yanfeng Sun, Geyu Lu, Peng Sun
Summary: Oxide semiconductors with multi-shell hollow architecture have great potential as sensing materials in high-performance gas sensors. In this study, solid, core-shell, and double-shell zinc oxide (ZnO) microspheres were successfully synthesized using a template-free method. Compared to the other two structures, the gas sensor based on the double-shell structure exhibited the highest response to 100 ppm ethanol at 275 degrees C (-47.4), which was 4.8 times higher than that of the solid structure (-9.8) under the same conditions. Furthermore, the detection limit of the double-shell ZnO microsphere was as low as 1 ppm. The enhancement mechanism of the ethanol gas-sensing performance was systematically discussed.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Applied
Jie Jiang, Guohong Wang, Yanchi Shao, Juan Wang, Shuang Zhou, Yaorong Su
Summary: Constructing a step-scheme heterojunction is an efficient way to optimize the performance of a photocatalytic system, and in this study, a ZnO@ZnS step-scheme photocatalyst was successfully prepared with superior performance and efficient charge carrier separation.
CHINESE JOURNAL OF CATALYSIS
(2022)
Article
Metallurgy & Metallurgical Engineering
Li Tian, Qiang Liu, Jie-ling Wu, Yi-tao Yi
Summary: Hollow-structured Cu0.3Co2.7O4 microspheres were successfully synthesized via a one-pot template-free hydrothermal method, and characterized using various techniques. The formation mechanism was identified as Ostwald ripening in a solid-solution-solid process. Additionally, the Cu0.3Co2.7O4 microspheres exhibited mesoporous structure with two pore sizes, and showed optimal gas responses to ethanol at 190 degrees C.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2021)
Article
Environmental Sciences
Shalini Vishwanathan, Susmita Das
Summary: Hollow spherical MgO-ZnO microstructures were synthesized using glucose-mediated one-pot hydrothermal method, and exhibited highly efficient photocatalytic degradation in the high-energy UV region of natural sunlight.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Jie Li, Luchao Wu, Caiyun Jia, Qiaoshan Chen, Zirong Song, Baohong Guan
Summary: A template-assisted strategy is an effective method to obtain hollow nano/microspheres with uniform shape and size. However, the removal of the template often requires acid, alkali, organic solvent and calcination, causing pollution and high energy consumption. In this study, water-soluble α-calcium sulfate hemihydrate microspheres were used as a template to synthesize ZnO particles with a dense core-shell structure. After simply rinsing the α-calcium sulfate hemihydrate microspheres with water, hollow microspheres of ZnO with enhanced photocatalytic activity were obtained.
MATERIALS CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Multidisciplinary
Lijing Zhou, Zhixuan Han, Guo-Dong Li, Zhen Zhao
Summary: In this study, hierarchical hollow ZnO microspheres were successfully synthesized using a simple template-free solvothermal route, with ethylene glycol playing a crucial role in promoting the growth and aggregation of nanorods. The hollow ZnO microspheres showed efficient degradation of dyes and good stability during photocatalytic cycling.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)
Article
Chemistry, Analytical
Shichao Wang, Xiaohu Wang, Gaoqun Qiao, Xiaoyan Chen, Xinzhen Wang, Hongzhi Cui
Summary: Core-double shell-structured ZnO@In2O3@ZnO microspheres were successfully synthesized by decorating In2O3 and ZnO on the surface of ZnO hollow microspheres, exhibiting excellent gas sensing properties with high response to gases like ethanol, especially at low concentrations. This superior gas sensing performance was attributed to its high specific surface area, abundant surface defects, and radial electronic modulation mechanism.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Multidisciplinary
Maiyong Zhu, Xuan Li, Chengyu Tu, Qiao Luo, Yijing Nie, Jianmei Pan, Songjun Li
Summary: In this study, solid spherical Ni-glycolate/Ni microspheres were successfully synthesized as a self-template to direct the formation of hollow NiS microspheres, exhibiting excellent electrochemical performance in supercapacitors. The source of nickel(ii) was found to have a significant impact on the formation of Ni-glycolate/Ni, and the synthesis of hollow structures was achieved by controlling the acidity of the system.
MATERIALS CHEMISTRY FRONTIERS
(2022)
Article
Engineering, Chemical
Md Shahadat Hossain, Takeshi Furusawa, Masahide Sato
Summary: A simple and cost-effective hydrothermal technique was used to fabricate hollow α-Fe2O3 microspheres, which were characterized by various methods. The microspheres exhibited a shell composed of aggregated α-Fe2O3 nanoparticles with a hollow interior. This material shows potential applications in drug delivery, gas sensing, and lithium storage.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Xiaoqian Ai, Shun Yan, Ligang Ma
Summary: In this study, a hierarchical ZnO microsphere precursor was prepared using a hydrothermal method, and a controllable morphology ZnO catalyst was produced through annealing at different temperatures. The catalyst annealed at 400 degrees C showed the best photocatalytic activity for the degradation of dye molecules, and its structure was confirmed to be a 2D cellular network composed of two-dimensional nanosheets through electron microscopy measurements.
Article
Engineering, Electrical & Electronic
Azadeh Haghighatzadeh, Babak Mazinani, Masood Ostad, Mohammadreza Shokouhimehr, Joydeep Dutta
Summary: Hollow ZnO microspheres were successfully synthesized via a facile hydrothermal approach, with controlled morphology at different temperatures; increasing hydrothermal growth temperature led to enhanced absorbance and emission, along with improved crystalline qualities.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Multidisciplinary
Guozhen Zhu, Qihao Yang, Zhen Yang, Renchao Che
Summary: Porous hollow Co3O4 microspheres wrapped with graphene oxide were synthesized by a step solvothermal method and subsequent heat treatment. This design greatly increased the specific surface area and achieved sufficient contact between the microspheres and electrolyte, resulting in a high charge specific capacity of 888.59 mA h g-1. The porous and hollow structure provided stress relief during charging/discharging, leading to excellent cycling stability and a specific capacity of 465.75 mA h g-1 at the 1000th cycle. Furthermore, the tight package of graphene oxide greatly improved the conductivity of Co3O4 microspheres, enabling superior rate performance of 280.99 mA h g-1 at 10 C.
Article
Nanoscience & Nanotechnology
Licheng Zhou, Zhixiang Hu, Hua-Yao Li, Jingyao Liu, Yi Zeng, Jingsong Wang, Yifu Huang, Ling Miao, Guangzu Zhang, Yongan Huang, Jianjun Jiang, Shenglin Jiang, Huan Liu
Summary: The template-free method proposed in this study for constructing tin oxide (SnO2) porous hollow microspheres (PHMs) relies on the competition between solvent evaporation rate and phase separation dynamics of colloidal SnO2 quantum wires. The resulting SnO2 PHMs exhibit desirable structural stability and can be directly deposited onto device substrates for the fabrication of semiconductor gas sensors, simplifying the process and enhancing gas-sensing capabilities.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Applied
Guanqing Sun, Lin Cheng, Mengyue Tong, Linlin Chen, Jing Luo, Ren Liu
Summary: In this paper, the use of hollow microspheres prepared from Pickering emulsion droplets in the thermal cured epoxy resin formulations is reported. The addition of hollow microspheres reduces the shrinkage stress of the resin, with polydisperse hollow microspheres being more effective in reducing shrinkage stress. The well-dispersed hollow microspheres in the resin matrices do not undermine the basic mechanical properties of the coating.
PROGRESS IN ORGANIC COATINGS
(2023)
Article
Chemistry, Inorganic & Nuclear
Md Shahadat Hossain, Takeshi Furusawa, Masahide Sato
Summary: ZnO hollow microspheres were successfully prepared using a sucrose-derived carbon template-assisted hydrothermal method. The microspheres showed a shell composed of aggregated ZnO nanoparticles and a hollow interior after decomposition of the sucrose-derived carbon core. Both ZnO hollow microspheres and ZnO nanoparticles exhibited excellent photocatalytic activity for rhodamine blue degradation under UV light, with the hollow microspheres showing 10% higher efficiency due to their nanoporous structure, higher surface area, and easy formation of ·OH radicals.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Applied
Heena, Komal Sharma, Kamlesh Kumar, Bhargab Das, Raj Kumar
Summary: In this study, holographic films were prepared using an automatic film applicator, and their performance was compared with films prepared by other methods. The results showed that holographic films prepared with the automatic film applicator had higher diffraction efficiency and more uniform thickness, making them suitable for holographic applications.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Athira S. Vijayan, Antony Joseph, Abey Joseph, T. S. Abhijith, Baiju G. Nair, V. Sajith
Summary: Novel polydopamine functionalized ceria-zirconia nanoparticles filled water-borne epoxy nanocomposite coatings were developed to prevent microbial-induced corrosion of mild steel. The coatings exhibited exceptional anti-biofouling and anti-biocorrosion properties due to the synergistic effect of PDA functionalization and zirconium incorporation, providing significant enhancement in charge transfer resistance and coating resistance.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Yudan Yi, Qingyong Sun, Qijun Li, Bi Shi, Ya-nan Wang
Summary: Producing metal-free leather is an effective approach to eliminate Cr pollution and achieve sustainable development of the leather industry. However, current metal-free tanning technologies have limitations in terms of water sorption and charge properties. By using cationic amphiphilic acrylic copolymers (PSD) as retanning agents, the properties of metal-free leather can be significantly improved, including enhanced hydrophobicity, better dye absorption, and excellent filling effect.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Yunqing Xia, Lifen Tong, Xiaofang Feng, Hubing Xiang, Yi He, Xiaobo Liu
Summary: By incorporating functionalized nanofillers, such as polydopamine-modified graphitic carbon nitride and cerium oxide, into epoxy coatings, their corrosion resistance can be improved and their protective period can be extended.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Weineng Lu, Guanhao Ma, Jinqing Qu
Summary: Four novel bis-chalcone-based carbazole derivative photoinitiators were designed and synthesized in this study. Their maximum absorption wavelengths were determined and found to exhibit high molar extinction coefficients. Furthermore, a three-component photoinitiation system including bis-chalcone/iodonium/amine was successfully used to trigger the rapid and efficient photopolymerization of acrylates. The photoinitiators also showed good photo bleaching and biocompatibility, making them suitable for applications such as 3D printing and deep coating curing.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Xingnan Zhou, Shixian Zhang, Yiheng Song, Hongmei Qin, Chuanxi Xiong, Shan Wang, Quanling Yang, Delong Xie, Rong Fan, Dan Chen
Summary: In this study, eco-friendly 3-amino-1,2,4-triazole (ATA) molecules were used to modify graphene oxide (GO) nanosheets for improving the anti-corrosion performance of water-borne epoxy (WEP) coating. The results show that ATA modification enhances the dispersion of GO in the polymer coating and significantly improves the barrier effect.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Hao Fu, Wei Bing, Xushibojie Liu
Summary: In this study, temperature-sensitive coatings with bacteria-killing and bacteria-releasing functions were prepared on silicone rubber surfaces by UV polymerization and UV photocatalysis. The modified surface exhibited strong and persistent bactericidal effect, inhibiting the formation of bacterial biofilm. Moreover, the smart surface can effectively release bacteria and resist bacterial adhesion through temperature changes. The modified silicone rubber surface showed good biocompatibility without cytotoxicity.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Lee Eyann, Zulkifli Mohamad Ariff, Mohamad Danial Shafiq, Raa Khimi Shuib, Muhamad Sharan Musa
Summary: By investigating the effect of MAA addition on the properties of the WEA core-shell emulsion, film and coating, it was found that MAA can significantly impact the structure and performance of the coatings, and has great potential for applications.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Jinkyu Choi, Kyung Hoon Min, Byeong Seok Kim, Sung-Hyeon Baeck, Sang Eun Shim, Yingjie Qian
Summary: A novel phosphorus-based flame retardant was designed by incorporating aryl groups, which effectively improved the flame retardancy and mechanical properties of polyurethanes.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Saowaluk Taechutrakul, Thananchai Piroonpan, Beata Paulina Rurarz, Slawomir Kadlubowski, Piotr Ulanski, Wanvimol Pasanphan
Summary: This study proposes the use of nanogels to disperse and stabilize water-insoluble organic pigment particles in water-based inks. The nanogels were prepared using electron beam-induced chemical reactions and showed good dispersion and stabilization properties. The use of nanogels in ink formulation improved the ink's hiding power, lightfastness, and resistance properties.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Shan Wan, Huikai Chen, Bokai Liao, Xingpeng Guo
Summary: In this study, 2-amino-5 mercapto-1,3,4-thiadiazole (ATT) was used as an intercalating agent to prepare ATT/BNNS nanofillers via a liquid-phase assisted ultrasound method. TEM results showed that ATT successfully exfoliated BNNS and reduced agglomeration. The WEP ATT/BNNS coating exhibited the best protective performance under saline immersion due to the combined action of ATT inhibitor and BNNS physical barrier.
PROGRESS IN ORGANIC COATINGS
(2024)
Review
Chemistry, Applied
Lijie Yin, Bo Zhang, Ming Tian, Nanying Ning, Wencai Wang
Summary: This paper reviews the recent progress in the synthesis of bio-based waterborne polyurethanes (BWPU) and focuses on its applications in coatings, adhesives, and antimicrobials. BWPU has attracted much attention due to its good physical and chemical properties, no VOCs emissions, exploitation of renewable substances, and structural design-ability.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Yuyang Zhou, Yang Chen, Xinming Cao, Haodong Fu, Yun Li, Yonghui Zhang, Jun Ma, Xin Liu
Summary: This study proposes a strategy to fabricate a high-strength double-layer superhydrophobic actuator, which consists of a metal/glass-based superhydrophobic substrate and a polymer superhydrophobic coating. The coating has high adhesive strength, self-cleaning, anti-ultraviolet irradiation, and anti-stripping properties, along with photothermal and magnetic response capabilities, enabling its application in various fields.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Fengbiao Chen, Fei Gao, Xinru Guo, Yu Chen, Xuelang Gao, Liang Shen
Summary: In this study, various covalent adaptable networks (CANs) were synthesized using multifunctional amines and compared with CANs prepared from primary and secondary amines. The results showed that the performance of CANs is closely related to the crosslinking density, and increasing the content of secondary amines improves the performance but weakens the dynamics.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Chemistry, Applied
Qian Zhang, Mengyi Shen, Xingcai Liu, Hao Fu, Wenbo Yang, Jinyuan Zhao, Jian Wang, Yaping Du, Chunjie Ma
Summary: Rare earth-containing corrosion inhibitors were successfully synthesized and added into epoxy coatings for the anti-corrosion of steel materials. The results showed that the coatings with rare earth elements had better anti-corrosion performance, and this difference in performance could be explained by the inherent properties of rare earth elements.
PROGRESS IN ORGANIC COATINGS
(2024)