| نویسندگان | مسعود همدانیان-سجاد کریم زاده-وحید جباری-دینو ویلاگران |
|---|
| نشریه | MAT SCI SEMICON PROC |
|---|
| تاریخ انتشار | ۲۰۱۶-۱-۰۱ |
|---|
| نمایه نشریه | ISI ,SCOPUS |
|---|
چکیده مقاله
Charge separationisavitalprocessinordertoachievehighperformanceTiO2-based photocatalysts.In the urrentstudy,toenhancethechargeseparationandsuppressthechargerecombination,novelna-
nocomposites ofmetal(CoandCu)andnonmetal(C,N,S)dopedTiO2 nanophotocatalyst(labeledas
Co@C,N,S-doped TiO2 and Cu@C,N,S-dopedTiO2) weresynthesizedviaphotochemicaldeposition-as-
sisted sol–gel technique.Thecrystallinestructuresandcharacteristicofthepreparedcatalystswere
analyzed byXRD,SEM,TEM,EDAX,PL,andUV–vis DRSspectroscopies.Thephotocatalyticperformance
of thesampleswastestedthroughdecompositionofmethylorange(MO)aqueoussolutionsunderUV
and visiblelightirradiation.ItwasfoundthatphotodepositionofmetalsontoTiO2 slowedchargere-
combination comparedtopureTiO2 in additiontoformationofhigherconcentrationofOHradicalson
the TiO2 photocatalystsurfaceduringlightirradiationcomparedtopureTiO2. Beyondtheoptimum
content of2wt%CuandCo,adeclineinphotocatalyticperformancewasobservedwhichwasascribedto
metal agglomerationandblockageofthephotosensitiveTiO2 surface.