Title:	Reproducibility in Artificial Photosynthesis: A Case Study on SnO2/Cu Photocatalysts.
Authors:	IGA, G. D. GABRIEL FILHO, J. B. TORRES, J. A. VIEIRA, J. L. RIBEIRO, C.
Affiliation:	FEDERAL UNIVERSITY OF SÃO CARLOS (UFSCAR); FEDERAL UNIVERSITY OF SÃO CARLOS (UFSCAR); FEDERAL UNIVERSITY OF SÃO CARLOS (UFSCAR); CAUE RIBEIRO DE OLIVEIRA, CNPDIA.
Date Issued:	2025
Citation:	ChemCatChem, v. 0, e00618, 2025.
Pages:	10 p.
Description:	This study examines how synthesis routes and storage conditions affect the reliability of photocatalytic data for SnO2/Cu catalysts. Our findings show that nanoparticle stability and photocatalytic performance are significantly influenced by adsorbed ethanol from synthesis—a factor often overlooked in softchemistry methods. Ethanol adsorbates show strong stability, resisting standard removal techniques, and directly affecting photocatalytic results. Over two weeks, these adsorbates persisted under controlled storage, particularly in samples with higher copper content, highlighting strong copper-ethanol interactions. Post-reaction analysis also revealed copper phase transitions during photocatalytic CO2 reduction (CO2RR). In uncontrolled storage, Cu0 oxidizes to CuO; however, photocatalysis promotes a shift to Cu2O, driven by ethanol oxidation. Furthermore, leached copper reduction on SnO2 in water suggests a potential light-induced synthesis route for Cu-based wide band gap semiconductors and supports Cu redox cycling on the catalyst. These results confirm that adsorbed ethanol acts as an electron donor, actively participating in the photocatalytic process. This study emphasizes the importance of accounting for synthesis-derived adsorbates to ensure accurate and reliable phot
Keywords:	Anthropogenic CO2 Heterostructure formation
DOI:	doi.org/10.1002/cctc.202500618
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CNPDIA)