Photoluminescence emission behavior on the reduced band gap of Fe doping in CeO2-SiO2 nanocomposite and photophysical properties

被引：94

作者：

Farrukh, Muhammad Akhyar ^{[1
]}

Butt, Komal Mehmood ^{[2
]}

Chong, Kok-Keong ^{[3
]}

Chang, Wei Sea ^{[4
]}

机构：

[1] Forman Christian Coll, Dept Chem, Ferozepur Rd, Lahore 54600, Pakistan

[2] Govt Coll Univ Lahore, Nanochem Lab, Lahore 54000, Pakistan

[3] Univ Tunku Abdul Rahman, Dept Elect & Elect Engn, Kajang 43000, Selangor, Malaysia

[4] Monash Univ Malaysia, Sch Engn, Bandar Sunwa 47500, Malaysia

来源：

JOURNAL OF SAUDI CHEMICAL SOCIETY | 2019年 / 23卷 / 05期

关键词：

Photoluminescence; Band gap; Doping; Oxygen vacancies; Lattice contraction; Photocatalysis; RICE HUSK ASH; CATALYTIC-PROPERTIES; OPTICAL-PROPERTIES; CEO2; NANOPARTICLES; DEGRADATION; CERIA; NANOCRYSTALS; OXIDATION; SURFACE;

D O I：

10.1016/j.jscs.2018.10.002

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Fe/CeO2-SiO2 nanocomposite was synthesized via hydrothermal method. Bond length of nanocomposite was determined through FTIR analysis, while Raman analysis showed lattice relaxation of CeO2 phase in Fe/CeO2-SiO2. TEM, XRD and DLS-PSA revealed an increase in size of Fe/CeO2-SiO2 as compared to CeO2-SiO2 which was attributed to have more oxygen vacancies in CeO2 after doping of iron. Lattice contraction was also observed in some phases of CeO2 in Fe/CeO2-SiO2 nanocomposite as compared to CeO2-SiO2 nanocomposite. This contraction was used for determination of Fe content incorporated in CeO2 [1 1 1] phase. The band gap values of Fe/CeO2-SiO2 nanocomposite were found reduced after doping of Fe by factors of 0.62 and 0.55 eV, respectively. Photoluminescence study of the materials was carried out to study the different type of transitions occurring after absorption of electromagnetic radiation. Photoluminescence intensity at 2.12 eV was found enhanced after doping of Fe due to increased oxygen vacancy. Photocatalytic activity of the nanocomposites was studied with the degradation of chlorpyrifos pesticide. (C) 2018 King Saud University. Production and hosting by Elsevier B.V.

引用

页码：561 / 575

页数：15

共 64 条

[1] Silica-tin nanotubes prepared from rice husk ash by sol-gel method: Characterization and its photocatalytic activity [J].

Adam, Farook ;

Appaturi, Jimmy Nelson ;

Thankappan, Radhika ;

Nawi, Mohd Asri Mohd .

APPLIED SURFACE SCIENCE, 2010, 257 (03) :811-816

[2] Zwitterionic surfactant assisted synthesis of Fe doped SnO2-SiO2 nanocomposite with enhanced photocatalytic activity under sun light [J].

Afzaal, Amna ;

Farrukh, Muhammad Akhyar .

MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS, 2017, 223 :167-177

[3] A green route to preparation of silica powders with rice husk ash and waste gas [J].

An, Dongmin ;

Guo, Yupeng ;

Zhu, Yanchao ;

Wang, Zichen .

CHEMICAL ENGINEERING JOURNAL, 2010, 162 (02) :509-514

[4]

Arjmandi R., 2016, INT J BIOL MACROMOL, V88, P497

[5] Between the internuclear distances and force constants of molecules and its application to polyatomic molecules [J].

Badger, RM .

JOURNAL OF CHEMICAL PHYSICS, 1935, 3 (11) :710-714

[6]

Bakkiyaraj R., 2016, MATER RES INNOV, V21, P351

[7] Photoluminescence properties of rare earth (Nd, Yb, Sm, Pr)-doped CeO2 pellets prepared by solid-state reaction [J].

Balestrieri, Matteo ;

Colis, Silviu ;

Gallart, Mathieu ;

Schmerber, Guy ;

Ziegler, Marc ;

Gilliot, Pierre ;

Dinia, Aziz .

JOURNAL OF MATERIALS CHEMISTRY C, 2015, 3 (27) :7014-7021

[8] Structure and Morphology of Silver Nanoparticles on the (111) Surface of Cerium Oxide [J].

Benedetti, Francesco ;

Luches, Paola ;

Spadaro, Maria Chiara ;

Gasperi, Gabriele ;

D'Addato, Sergio ;

Valeri, Sergio ;

Boscherini, Federico .

JOURNAL OF PHYSICAL CHEMISTRY C, 2015, 119 (11) :6024-6032

[9] Understanding the Degradation Pathway of the Pesticide, Chlorpyrifos by Noble Metal Nanoparticles [J].

Bootharaju, M. S. ;

Pradeep, T. .

LANGMUIR, 2012, 28 (05) :2671-2679

[10] Computational Investigation of CO Adsorption and Oxidation on Iron-Modified Cerium Oxide [J].

Chen, Hsin-Tsung ;

Chang, Jee-Gong .

JOURNAL OF PHYSICAL CHEMISTRY C, 2011, 115 (30) :14745-14753

← 1 2 3 4 5 6 7 →