TY - JOUR
T1 - Native defects in silver orthophosphate and their effects on photocatalytic activity under visible light irradiation
AU - Sulaeman, Uyi
AU - Hermawan, Dadan
AU - Andreas, Roy
AU - Abdullah, Ahmad Zuhairi
AU - Yin, Shu
N1 - Funding Information:
This research was financially supported by Directorate of Research and Community Services , Directorate General of Development and Research Enhancement , Ministry of Research, Technology and Higher Education of the Republic of Indonesia in the Scheme of Competency Grant, Contract Number: 068/SP2H/LT/DRPM/IV/2017.
Publisher Copyright:
© 2017 Elsevier B.V.
PY - 2018/1/15
Y1 - 2018/1/15
N2 - Native defects in silver orthophosphate could be generated by simple co-precipitation method under ethanol-aqueous solution using AgNO 3 and Na 2 HPO 4 .12H 2 O. AgNO 3 ethanol-aqueous solution with the ethanol contents of 0%, 25%, 50%, 75%, 90% and 100% was reacted with Na 2 HPO 4 aqueous solution. The produced catalysts were characterized using XRD, DRS, FE-SEM, BET specific surface area and XPS. The increase of ethanol content in the synthesis process decreased the Ag/P atomic ratio of Ag 3 PO 4 . The native defects of silver vacancy might be generated on the surface of Ag 3 PO 4 . The activity of Ag 3 PO 4 for Rhodamine B degradation dramatically increased by 5.8 times higher compared to that of the pristine Ag 3 PO 4 . The defect states of Ag vacancies enhanced the separation of electron-hole pairs, leading to the improvement of photocatalytic activity.
AB - Native defects in silver orthophosphate could be generated by simple co-precipitation method under ethanol-aqueous solution using AgNO 3 and Na 2 HPO 4 .12H 2 O. AgNO 3 ethanol-aqueous solution with the ethanol contents of 0%, 25%, 50%, 75%, 90% and 100% was reacted with Na 2 HPO 4 aqueous solution. The produced catalysts were characterized using XRD, DRS, FE-SEM, BET specific surface area and XPS. The increase of ethanol content in the synthesis process decreased the Ag/P atomic ratio of Ag 3 PO 4 . The native defects of silver vacancy might be generated on the surface of Ag 3 PO 4 . The activity of Ag 3 PO 4 for Rhodamine B degradation dramatically increased by 5.8 times higher compared to that of the pristine Ag 3 PO 4 . The defect states of Ag vacancies enhanced the separation of electron-hole pairs, leading to the improvement of photocatalytic activity.
KW - Co-precipitation
KW - Defect
KW - Photocatalyst
KW - Silver orthophosphate
KW - Silver vacancy
UR - http://www.scopus.com/inward/record.url?scp=85030783288&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85030783288&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2017.09.188
DO - 10.1016/j.apsusc.2017.09.188
M3 - Article
AN - SCOPUS:85030783288
SN - 0169-4332
VL - 428
SP - 1029
EP - 1035
JO - Applied Surface Science
JF - Applied Surface Science
ER -