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PbO2decorated ZnO-TiO2core-shell nanoflower structures by zinc anodising for photo- A nd anodic degradation of Reactive Black-5 dye
Harito C.a, Zaidi S.Z.J.b, Bavykin D.V.b, Martins A.S.b,c, Yuliarto B.d, Walsh F.C.b, De Leon C.P.b
a Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City, Viet Nam
b Energy Technology Research Group, Faculty of Engineering and Physical Sciences, University of Southampton, Southampton, SO171BJ, United Kingdom
c National Institute of Alternative Technologies for Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactive Substances (INCT-DATREM), Institute of Chemistry, Sao Paulo State University, Araraquara, Sao Paulo, 14800-900, Brazil
d Advanced Functional Materials (AFM) Laboratory, Engineering Physics, Institut Teknologi Bandung, Bandung, 40132, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© 2020 Vietnam Academy of Science and Technology.This work shows that metallic zinc can be used as a low-cost substrate or electrode for photocatalyst and electrocatalyst use by anodising in mild bicarbonate solution. Electrochemical anodising was used to produce ZnO nanowires by controlling operational conditions and dip-coating the anodised surface with TiO2 to produce a core-shell coating with photocatalytic properties. The PbO2, which is known as good electrocatalyst, was electrodeposited over the ZnO-TiO2 core-shell structure to alter its surface for electrocatalytic degradation of dye. The electrochemical and photocatalytic behaviours of the coatings were analysed for the removal of RB-5 dye as model pollutant. For the ZnO-TiO2 core-shell, the photocatalytic removal mechanism was driven by the heterojunction photocatalytic effect of photocatalytically active anatase TiO2 and wurtzite ZnO. Photocatalysis was switched to electrocatalytic behaviour after incorporation of PbO2. Although the UV light might be blocked by PbO2, the electrochemical degradation was enhanced due to the creation of •OH free radicals over the PbO2 particles decorating a ZnO-TiO2 core-shell composite coating.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Bicarbonate solution,Core-shell composites,Electrocatalytic degradations,Electrochemical degradation,Operational conditions,Photo-catalytic removal,Photocatalytic effect,Photocatalytic property[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text]core-shell,PbO2,RB-5 dye,TiO2,ZnO nanowires[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1088/2043-6254/abb238[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]