Enhancing visible-light-driven NO oxidation through molecular‐level insights of dye-loaded sea sands  

作　　者：Yu-Han Li Bang-Fu Chen Sónia A.C.Carabineiro You-Yu Duan Ping Tan Wing-Kei Ho Fan Dong 

机构地区：[1]Engineering Research Center for Waste Oil Recovery Technology and Equipment,Ministry of Education,Chongqing Key Laboratory of Catalysis and New Environmental Materials,Chongqing Technology and Business University,Chongqing,400067,China [2]Nanchang Institute of Technology,Nanchang,33044,China [3]LAQV-REQUIMTE,Department of Chemistry,NOVA School of Science and Technology,Universidade NOVA de Lisboa,2829-516,Caparica,Portugal [4]College of Physics and Center of Quantum Materials and Devices,Chongqing University,Chongqing,401331,China [5]Department of Science and Environmental Studies,The Education University of Hong Kong,Hong Kong,999077,China

出　　处：《Rare Metals》2024年第2期543-554,共12页稀有金属（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Nos.52370109,51808080 and 21707036);China Postdoctoral Science Foundation(No.2022M710830);the Venture and Innovation Support Program for Chongqing Overseas Returnees(No.cx2022005);the Natural Scienceof CQ CSTC(No.CSTB2022NSCQMSX1267);Chongqing Natural Science Postdoctoral Fund(No.cstc2019jcyj-bsh0107);the Research Project of Chongqing Education Commission Foundation(Nos.KJQN201800826,KJQN202000818 and KJQN202200830&KJQN201800840);the Science and Technology Research Program of Chongqing Municipal Education Commission of China(No.KJZD-K202100801);the Post-doctoral Program Funded by Chongqing,Chongqing University Innovation Research Group project(No.CXQT21023);the High Level Talent Scientific Research Startup Project of Chongqing Technology and Business University(No.1956044);support from FCT/MCTES(Fundacao para a Ciência e Tecnologia and Ministério da Ciência,Tecnologia e Ensino Superior)(Nos.UIDB/50006/2020 and UIDP/50006/2020);for the Scientific Employment Stimulus-Institutional Call(No.CEECINST/00102/2018)。

摘　　要：Natural minerals,abundant and easily obtained through simple physical processing,offer a cost-effective and environmentally friendly solution for dyeing wastewater disposal and air pollution treatment.This study investigates the photocatalytic removal of NO using natural different types of dyes,loaded on natural sand,under visible light illumination.By examining various coating concentrations of dyes and sand weights,we discovered that sand loaded with Rhodamine B(RhB)exhibits high activity for the photo-oxidation of NO.A combination results of X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS),Fourier transform infrared spectroscopy(FTIR)and thermogravimetric(TG)analyses confirm the presence of SiO_(2),CaCO_(3),Al_(2)O_(3)and iron oxides as the main components of the sand.Furthermore,studying RhB-loaded individual components reveals that CaCO_(3)plays a crucial role in enhancing the NO removal rate.Experimental results and theoretical calculations demonstrate the establishment of a directional charge transfer channel from CaCO_(3)to RhB,facilitating the adsorption and activation of molecular NO and O_(2).This work not only promotes the utilization of natural mineral resources but also enriches the fields of environmental photochemistry and semiconductor photocatalysis.

关 键 词：SAND DYES Rhodamine B Photo-oxidation of NO Visible light illumination 

分 类 号：X701[环境科学与工程—环境工程] X703[理学—物理化学] O643.36[理学—化学] O644.1