Functionalized Graphene Oxide with Bismuth and Titanium Oxide Nanoparticles for Efficiently Removing Formaldehyde from the Air by Photocatalytic Degradation-Adsorption Process

作     者：Mohsen Mohammadi Asl Hamid Shirkhanloo Nabiollah Mansouri Seyed Ali Reza Haji Seyed Mirzahosseini Farideh Atabi 

作者机构：Department of Environmental EngineeringFaculty of Natural Resource and EnvironmentScience and Research BranchIslamic Azad UniversityTehran 14778-93855Iran Research Institute of Petroleum Industry(RIPI)West BoulevardOlympic VillageTehran 14857-33111Iran 

出 版 物：《Journal of Analysis and Testing》 (分析检测（英文）)

年 卷 期：2023年第7卷第4期

页      面：444-458页

核心收录：

学科分类：081704[工学-应用化学] 081705[工学-工业催化] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 070602[理学-大气物理学与大气环境] 0706[理学-大气科学] 0703[理学-化学] 

基　　金：the Science and Research Branch,Islamic Azad University the Research Institute of Petroleum Industry(RIPI)for supporting this work 

主　　题：Formaldehyde removal Air Functionalized graphene oxide UV radiation Photocatalytic degradation-adsorption process 

摘      要：Formaldehyde(HCHO)is formed through the oxidation of volatile organic compounds(VOCs)and can cause human *** oxide and titanium oxide nanoparticles-functionalized nanographene oxide(Bi_(2)O_(3)/TiO_(2)@NGO)were used to rapidly remove the HCHO from the air by a photocatalytic degradation-adsorption process(PC-DAP).The formaldehyde vapor in pure air was generated in a dynamic system within a chamber,and flowed over Bi_(2)O_(3)/TiO_(2)@NGO adsorbent inside a fixed-bed quartz reactor(FBQR)under UV irradiation at optimized conditions(250C).At atmospheric pressure,the flow rate and gas hourly space velocity(GHSV)were adjusted to 300 mL/min and 100-450 L/h,*** radicals of HCHO and nanographene oxide(NGO)were generated through the UV-photochemical process,enhancing the chemical adsorption through the radicals’*** the other hand,the semi-degradation process by catalytic oxidation process converted some HCHO into raw materials of CO_(2)and H_(2)O,while the unconverted HCHO was physically absorbed by ***,the HCHO concentration in the outlet system was measured by gas chromatography with a flame ionization detector(GC-FID)after derivatizing formaldehyde with 2,4-dinitrophenylhydrazine(DNPH)and ***,efficient removal of HCHO from the air,the removal efficiency of more than 95%,was achieved through physical/chemical adsorption and the *** mean removal efficiencies for HCHO with Bi_(2)O_(3)-TiO_(2)@NGO,TiO_(2)@NGO,Bi_(2)O_(3)@NGO,and NGO were 98.7%,73.6%,61.8%,and 11.4%,respectively(n=10,RSD5%).The methodology was validated by spiking different concentrations of standard HCHO into pure air.