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

Yu-Han Li ¹Bang-Fu Chen ²Sónia A.C.Carabineiro ³You-Yu Duan ⁴Ping Tan ²Wing-Kei Ho ⁵Fan Dong²

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作者信息

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;Nanchang Institute of Technology,Nanchang 33044,China
2. 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
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
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Abstract

Natural minerals,abundant and easily obtained through simple physical processing,offer a cost-effective and environmentally friendly solution for dyeing wastew-ater disposal and air pollution treatment.This study investigates the photocatalytic removal of NO using natural different types of dyes,loaded on natural sand,under vis-ible 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 spec-troscopy(FTIR)and thermogravimetric(TG)analyses confirm the presence of SiO2,CaCO3,Al2O3 and iron oxides as the main components of the sand.Furthermore,studying RhB-loaded individual components reveals that CaCO3 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 CaCO3 to RhB,facilitating the adsorption and activation of molecular NO and O2.This work not only promotes the utilization of natural mineral resources but also enriches the fields of environmental photochemistry and semiconductor photocatalysis.

Key words

Sand/dyes/Rhodamine B/Photo-oxidation of NO/Visible light illumination

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基金项目

国家自然科学基金(52370109)

国家自然科学基金(51808080)

国家自然科学基金(21707036)

中国博士后科学基金(2022M710830)

Venture and Innovation Support Program for Chongqing Overseas Returnees(cx2022005)

Natural Science Foundation Project of CQ CSTC(CSTB2022NSCQ-MSX1267)

Chongqing Natural Science Postdoctoral Fund(cstc2019jcyjbsh0 107)

Research Project of Chongqing Education Commission Foundation(KJQN201800826)

Research Project of Chongqing Education Commission Foundation(KJQN202000818)

Research Project of Chongqing Education Commission Foundation(KJQN202200830&KJQN201800840)

Science and Technology Research Program of Chongqing Municipal Education Commission of China(KJZD-K202100801)

Postdoctoral Program Funded by Chongqing,Chongqing University Innovation Research Group project(CXQT21023)

High Level Talent Scientific Research Startup Project of Chongqing Technology and Business University(1956044)

FCT/MCTES(Funda??o para a Ciência e Tecnologia and Ministério da Ciência,Tecnologia e Ensino Superior)(UIDB/50006/2020)

FCT/MCTES(Funda??o para a Ciência e Tecnologia and Ministério da Ciência,Tecnologia e Ensino Superior)(UIDP/50006/2020)

Scientific Employment Stimulus—Institutional Call(CEECINST/00102/2018)

出版年

2024

稀有金属(英文版)

中国有色金属学会

稀有金属(英文版)

CSTPCDCSCDEI

影响因子：0.801

ISSN：1001-0521

参考文献量58

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