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AuthorZhou, Xinran
AuthorZhu, Yongheng
AuthorLuo, Wei
AuthorRen, Yuan
AuthorXu, Pengcheng
AuthorElzatahry, Ahmed A.
AuthorCheng, Xiaowei
AuthorAlghamdi, Abdulaziz
AuthorDeng, Yonghui
AuthorZhao, Dongyuan
Available date2021-09-08T06:49:46Z
Publication Date2016
Publication NameJournal of Materials Chemistry A
AbstractSemiconductor zinc oxides with a high surface area and porosity offer great potential for their widespread applications, particularly in the areas of optoelectronic devices and solid-state gas sensors owing to their size-dependent physical and chemical properties. Herein, ordered mesoporous ZnO with uniform large mesopores and a crystalline framework is successfully synthesized through a citric acid assisted soft-template strategy using lab-made amphiphilic diblock copolymer poly(ethylene oxide)-b-polystyrene (PEO-b-PS) as a structure directing agent. A gradient calcination treatment is employed to transform the as-made zinc complex/template composites into hierarchically mesoporous crystalline zinc oxides via decomposition of copolymer templates and the intermediate of zinc carbonate, while preserving the highly ordered mesostructure. Owing to its well-connected bimodal mesopores, high surface area and crystalline ZnO framework, the obtained mesoporous ZnO exhibits excellent ethanol sensing performance with a fast response (6 s) and recovery (7 s), and high sensitivity and selectivity. The Royal Society of Chemistry 2016.
PublisherRoyal Society of Chemistry
SubjectChemical sensors
Crystalline materials
Gas detectors
Gas sensing electrodes
Mesoporous materials
Optoelectronic devices
Polyethylene oxides
Semiconductor devices
Solid-state sensors
Amphiphilic diblock copolymers
Calcination treatment
Ordered mesoporous
Ordered mesostructure
Physical and chemical properties
Soft-template synthesis
Solid state gas sensors
Structure directing agents
Zinc oxide
TitleChelation-assisted soft-template synthesis of ordered mesoporous zinc oxides for low concentration gas sensing
Issue Number39
Volume Number4

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