CeO2 Nanostructures Enriched with Oxygen Vacancies for Photocatalytic CO2 Reduction

Hezam, Abdo1; Namratha, Keerthiraj2; Drmosh, Q.A.3; Ponnamma, Deepalekshmi4; Wang, Jingwei5; Prasad, Suchitra6; Ahamed, Momin7; Cheng, Chun5; Byrappa, Kullaiah8

2020

10.1021/acsanm.9b01833

ACS Applied Nano Materials   影响因子和分区

25740970

Synthesizing nanomaterials at the expense of solar energy and the associated energy generation have utmost significance as far as environmental sustainability is concerned. Here, sunlight-assisted combustion synthesis of a nanoscale metal oxide (CeO2) is reported. The sunlight, as a clean renewable energy source, is used for the first time to initiate the exothermic combustion reaction and to introduce oxygen vacancies into the CeO2. The current synthesis setup controls the environmental problems of gas evolution, usually associated with the conventional method, and thus maintains the green pathway. Additionally, for comparison, CeO2 nanoparticles are also synthesized using the conventional solution combustion method (CeO2-CSC). It is found that the CeO2 synthesized using sunlight-assisted combustion (CeO2-SAC) possesses a smaller particle size, a higher concentration of oxygen vacancies, and a narrower band gap than the CeO2-CSC. Therefore, CeO2-SAC demonstrates higher photocatalytic performance in converting CO2 to CH3OH (0.702 μmol h^-1 g^-1) than the CeO2-CSC (0.397 μmol h^-1 g^-1), thus pointing toward environmentally benign photocatalytic CO2 reduction.
Copyright © 2019 American Chemical Society.

DFT calculations green sustainable synthesis oxygen vacancies mesoporous CeO2 selective CO2 photoreduction

SCI ; EI

英语

其他

Department of Sport and Recreation, Government of Western Australia[] ; Council of Scientific and Industrial Research, India[] ; University Grants Commission[] ; King Fahd University of Petroleum and Minerals[2015TQ01C543] ; King Fahd University of Petroleum and Minerals[] ; [F.19-1/2013]

Science & Technology - Other Topics ; Materials Science

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:000510073600015

American Chemical Society

20200508115429

Carbon dioxide ; Cerium oxide ; Combustion synthesis ; Energy gap ; Metals ; Particle size ; Solar energy ; Sustainable development ; Synthesis (chemical)

Solar Energy and Phenomena:657.1 ; Chemical Reactions:802.2 ; Chemical Operations:802.3 ; Inorganic Compounds:804.2 ; Crystalline Solids:933.1

Web of Science

1.Center for Materials Science and Technology, University of Mysore, Vijana Bhavana, Manasagangothiri Mysuru; 570006, India
2.DOS in Earth Science, University of Mysore, Manasagangothiri Mysuru; 570006, India
3.Center of Research Excellence in Nanotechnology, King Fahd University of Petroleum and Minerals, Dhahran; 31261, Saudi Arabia
4.Center for Advanced Materials, Qatar University, P.O box 2713, Doha, Qatar
5.Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen; 518055, China
6.Theoretical Sciences Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bangalore; 560064, India
7.Nanomaterials and Catalysis Laboratory, Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bangalore; 560064, India
8.Adichunchanagiri University, N.H.75, B. G. Nagara, Mandya District, 571448, India

Hezam, Abdo,Namratha, Keerthiraj,Drmosh, Q.A.,et al. CeO2 Nanostructures Enriched with Oxygen Vacancies for Photocatalytic CO2 Reduction[J]. ACS Applied Nano Materials,2020,3(1):138-148.

Hezam, Abdo.,Namratha, Keerthiraj.,Drmosh, Q.A..,Ponnamma, Deepalekshmi.,Wang, Jingwei.,...&Byrappa, Kullaiah.(2020).CeO2 Nanostructures Enriched with Oxygen Vacancies for Photocatalytic CO2 Reduction.ACS Applied Nano Materials,3(1),138-148.

Hezam, Abdo,et al."CeO2 Nanostructures Enriched with Oxygen Vacancies for Photocatalytic CO2 Reduction".ACS Applied Nano Materials 3.1(2020):138-148.