Effect of trisodium citrate on the formation and structural, optical and photocatalytic properties of Sr-doped ZnO
© 2020 Elsevier B.V. Sr-doped ZnO powders were precipitated from a citrate-modified zinc precursor solution. The phase formation, morphology and optical properties of the powders were studied using X-ray diffractometry (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM)...
Saved in:
Main Authors: | , , , |
---|---|
Format: | Journal |
Published: |
2020
|
Subjects: | |
Online Access: | https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85082929647&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/70553 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Institution: | Chiang Mai University |
id |
th-cmuir.6653943832-70553 |
---|---|
record_format |
dspace |
spelling |
th-cmuir.6653943832-705532020-10-14T08:38:13Z Effect of trisodium citrate on the formation and structural, optical and photocatalytic properties of Sr-doped ZnO Sumetha Suwanboon Wararat Somraksa Pongsaton Amornpitoksuk Chamnan Randorn Engineering Materials Science © 2020 Elsevier B.V. Sr-doped ZnO powders were precipitated from a citrate-modified zinc precursor solution. The phase formation, morphology and optical properties of the powders were studied using X-ray diffractometry (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), diffuse reflectance spectroscopy (DRS) and photoluminescence spectrometry, respectively. The photocatalytic degradation of an aqueous methylene blue (MB) solution over the synthesized powders was investigated by UV-vis spectrophotometry. Citrate ions played an important role in controlling the morphology of the synthesized ZnO powders and the formation of the Sr-doped ZnO phase. ZnO powders doped with 0–15 mol% Sr formed completely at the highest mole ratio of trisodium citrate dihydrate to zinc nitrate tetrahydrate (R = 5). At R = 5, when the Sr ion concentration was increased from 0 to 15 mol%, crystallite size of ZnO decreased from 38.63 to 31.61 nm and the optical band gap decreased from 3.157 to 3.129 eV. The photocatalytic degradation of an aqueous MB solution under UV irradiation over the Sr-doped ZnO powders increased as a function of irradiation time and Sr ion concentration in the range of 0–10 mol%. The highest photocatalytic activity over 10 mol% Sr-doped ZnO powder was about 98% and the photocatalytic activity of the powder remained higher than 87% for five cycles of reuse. 2020-10-14T08:33:34Z 2020-10-14T08:33:34Z 2020-08-15 Journal 09258388 2-s2.0-85082929647 10.1016/j.jallcom.2020.154963 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85082929647&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/70553 |
institution |
Chiang Mai University |
building |
Chiang Mai University Library |
continent |
Asia |
country |
Thailand Thailand |
content_provider |
Chiang Mai University Library |
collection |
CMU Intellectual Repository |
topic |
Engineering Materials Science |
spellingShingle |
Engineering Materials Science Sumetha Suwanboon Wararat Somraksa Pongsaton Amornpitoksuk Chamnan Randorn Effect of trisodium citrate on the formation and structural, optical and photocatalytic properties of Sr-doped ZnO |
description |
© 2020 Elsevier B.V. Sr-doped ZnO powders were precipitated from a citrate-modified zinc precursor solution. The phase formation, morphology and optical properties of the powders were studied using X-ray diffractometry (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), diffuse reflectance spectroscopy (DRS) and photoluminescence spectrometry, respectively. The photocatalytic degradation of an aqueous methylene blue (MB) solution over the synthesized powders was investigated by UV-vis spectrophotometry. Citrate ions played an important role in controlling the morphology of the synthesized ZnO powders and the formation of the Sr-doped ZnO phase. ZnO powders doped with 0–15 mol% Sr formed completely at the highest mole ratio of trisodium citrate dihydrate to zinc nitrate tetrahydrate (R = 5). At R = 5, when the Sr ion concentration was increased from 0 to 15 mol%, crystallite size of ZnO decreased from 38.63 to 31.61 nm and the optical band gap decreased from 3.157 to 3.129 eV. The photocatalytic degradation of an aqueous MB solution under UV irradiation over the Sr-doped ZnO powders increased as a function of irradiation time and Sr ion concentration in the range of 0–10 mol%. The highest photocatalytic activity over 10 mol% Sr-doped ZnO powder was about 98% and the photocatalytic activity of the powder remained higher than 87% for five cycles of reuse. |
format |
Journal |
author |
Sumetha Suwanboon Wararat Somraksa Pongsaton Amornpitoksuk Chamnan Randorn |
author_facet |
Sumetha Suwanboon Wararat Somraksa Pongsaton Amornpitoksuk Chamnan Randorn |
author_sort |
Sumetha Suwanboon |
title |
Effect of trisodium citrate on the formation and structural, optical and photocatalytic properties of Sr-doped ZnO |
title_short |
Effect of trisodium citrate on the formation and structural, optical and photocatalytic properties of Sr-doped ZnO |
title_full |
Effect of trisodium citrate on the formation and structural, optical and photocatalytic properties of Sr-doped ZnO |
title_fullStr |
Effect of trisodium citrate on the formation and structural, optical and photocatalytic properties of Sr-doped ZnO |
title_full_unstemmed |
Effect of trisodium citrate on the formation and structural, optical and photocatalytic properties of Sr-doped ZnO |
title_sort |
effect of trisodium citrate on the formation and structural, optical and photocatalytic properties of sr-doped zno |
publishDate |
2020 |
url |
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85082929647&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/70553 |
_version_ |
1681752923639382016 |