{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Hai Z"],"funding":["NIMHD NIH HHS"],"pagination":["10829-10835"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC4892124"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["1(36)"],"pubmed_abstract":["Au, Cu and bimetallic Au-Cu nanoparticles were synthesized on the surface of commercial TiO<sub>2</sub> compounds (P25) by reduction of the metal precursors with tetrakis (hydroxymethyl) phosphonium chloride (THPC) (0.5 % in weight). The alloyed structure of Au-Cu NPs was confirmed by HAADF-STEM, EDS, HRTEM and XPS techniques. The photocatalytic properties of the modified TiO<sub>2</sub> have been studied for phenol photodegradation in aqueous suspensions under UV-visible irradiation. The modification by the metal nanoparticles induces an increase in the photocatalytic activity. The highest photocatalytic activity is obtained with Au-Cu/TiO<sub>2</sub> (Au/Cu 1:3). Their electronic properties have been studied by time resolved microwave conductivity (TRMC) to follow the charge-carrier dynamics. TRMC measurements show that the TiO<sub>2</sub> modification with Au, Cu and Au-Cu nanoparticles plays a role in charge-carrier separations increasing the activity under UV-light. Indeed, the metal nanoparticles act as a sink for electron, decreasing the charge carrier recombination. The TRMC measurements show also that the bimetallic Au-Cu nanoparticles are more efficient in electron scavenging than the monometallic Au and Cu ones."],"journal":["Journal of materials chemistry. A"],"pubmed_title":["Modification of TiO<sub>2</sub> by Bimetallic Au-Cu Nanoparticles for Wastewater Treatment."],"pmcid":["PMC4892124"],"funding_grant_id":["G12 MD007591"],"pubmed_authors":["Etcheberry A","Uribe DB","Chen J","Remita H","Vigneron J","Beaunier P","Sorgues S","Kolli NE","Colbeau-Justin C","Jose-Yacaman M","Hai Z"],"additional_accession":[]},"is_claimable":false,"name":"Modification of TiO<sub>2</sub> by Bimetallic Au-Cu Nanoparticles for Wastewater Treatment.","description":"Au, Cu and bimetallic Au-Cu nanoparticles were synthesized on the surface of commercial TiO<sub>2</sub> compounds (P25) by reduction of the metal precursors with tetrakis (hydroxymethyl) phosphonium chloride (THPC) (0.5 % in weight). The alloyed structure of Au-Cu NPs was confirmed by HAADF-STEM, EDS, HRTEM and XPS techniques. The photocatalytic properties of the modified TiO<sub>2</sub> have been studied for phenol photodegradation in aqueous suspensions under UV-visible irradiation. The modification by the metal nanoparticles induces an increase in the photocatalytic activity. The highest photocatalytic activity is obtained with Au-Cu/TiO<sub>2</sub> (Au/Cu 1:3). Their electronic properties have been studied by time resolved microwave conductivity (TRMC) to follow the charge-carrier dynamics. TRMC measurements show that the TiO<sub>2</sub> modification with Au, Cu and Au-Cu nanoparticles plays a role in charge-carrier separations increasing the activity under UV-light. Indeed, the metal nanoparticles act as a sink for electron, decreasing the charge carrier recombination. The TRMC measurements show also that the bimetallic Au-Cu nanoparticles are more efficient in electron scavenging than the monometallic Au and Cu ones.","dates":{"release":"2013-01-01T00:00:00Z","publication":"2013 Sep","modification":"2025-04-04T02:42:56.679Z","creation":"2019-03-27T02:15:15Z"},"accession":"S-EPMC4892124","cross_references":{"pubmed":["27274844"],"doi":["10.1039/C3TA11684K","10.1039/c3ta11684k"]}}