Plasma synthesis of various polymorphs of tungsten trioxide nanoparticles using gliding electric discharge in humid air:characterization and photocatalytic properties

作     者：Romaric L SEUTCHA Georges KAMGANG-YOUBI Elie ACAYANKA Valeria VERMILE François DEVRED Eric M GAIGNEAUX Samuel LAMINSI Romaric L SEUTCHA;Georges KAMGANG-YOUBI;Elie ACAYANKA;Valeria VERMILE;François DEVRED;Eric M GAIGNEAUX;Samuel LAMINSI

作者机构：Inorganic Chemistry DepartmentFaculty of SciencesUniversity of Yaounde INgoa-Ekelle 812YaoundéCameroon Institute of Condensed Matter and Nanosciences(IMCN)Molecular ChemistryMaterials and CatalysisUniversitéCatholique de LouvainPlace Louis Pasteur 11348 Louvain-la-NeuveBelgium 

出 版 物：《Plasma Science and Technology》 (等离子体科学和技术（英文版）)

年 卷 期：2023年第25卷第12期

页      面：72-82页

核心收录：

学科分类：081705[工学-工业催化] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0817[工学-化学工程与技术] 080501[工学-材料物理与化学] 070204[理学-等离子体物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：The authors owe many thanks to A. Mbouopda-Poupi (UAE University  United Arab Emirates) for performing SEM characterizations 

主　　题：plasma glidarc tungsten trioxide plasma-synthesis nanoparticles photocatalyst 

摘      要：A gliding electric arc(glidarc)discharge generates a low-temperature plasma at atmospheric *** the discharge occurs in humid air as the feed gas,the chemistry of a glidarc plasma consists of in situ formation of HO°and NO°as the primary chemical *** trioxide(WO_(3))nanoparticles were successfully prepared by exposure of a liquid precursor to glidarc *** WO_(3)samples were calcined at three different temperatures(300℃,500℃and 800℃),resulting in different pure polymorphs:γ-WO_(3)(at 300℃),β-WO_(3)(at 500℃)andα-WO_(3)(at 800℃)according to x-ray diffraction *** identification of WO_(3)compounds was also confirmed by attenuated total reflection Fourier transform infrared spectroscopy *** in the calcination temperature of WO_(3)induced a decrease in its specific surface area according to Brunauer–Emmett–Teller nitrogen physisorption *** UV-visible results showed that the absorption bands of plasma-WO_(3)samples were more intense than those of WO_(3)samples obtained by a precipitation route,a classical method used for ***,this parameter can improve the photocatalytic properties of WO_(3)under visible *** photodegradation(in sunlight conditions)of gentian violet,chosen as a model pollutant,confirmed the photocatalytic properties of plasma-WO_(3)*** novel synthesis method has great potential to improve the efficiency of advanced tungsten trioxide-based functional material preparation,as well as in pollution-reducing and energy-saving tungsten extractive metallurgy.