Tug-of-War Driven by the Structure of Carboxylic Acids: Tuning the Size, Morphology, and Photocatalytic Activity of α-Ag2WO4
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Title
Tug-of-War Driven by the Structure of Carboxylic Acids: Tuning the Size, Morphology, and Photocatalytic Activity of α-Ag2WO4Author (s)
Date
2022-09-23Publisher
MDPIISSN
2079-4991Bibliographic citation
Ribeiro, L.K.; Gouveia, A.F.; Silva, F.d.C.M.; Noleto, L.F.G.; Assis, M.; Batista, A.M.; Cavalcante, L.S.; Guillamón, E.; Rosa, I.L.V.; Longo, E.; et al. Tug-of-War Driven by the Structure of Carboxylic Acids: Tuning the Size, Morphology, and Photocatalytic Activity of α-Ag2WO4. Nanomaterials 2022, 12, 3316. https:// doi.org/10.3390/nano12193316Type
info:eu-repo/semantics/articleVersion
info:eu-repo/semantics/publishedVersionSubject
Abstract
Size and morphology control during the synthesis of materials requires a molecular-level
understanding of how the addition of surface ligands regulates nucleation and growth. In this
work, this control is achieved ... [+]
Size and morphology control during the synthesis of materials requires a molecular-level
understanding of how the addition of surface ligands regulates nucleation and growth. In this
work, this control is achieved by using three carboxylic acids (tartaric, benzoic, and citric) during
sonochemical syntheses. The presence of carboxylic acids affects the kinetics of the nucleation
process, alters the growth rate, and governs the size and morphology. Samples synthesized with
citric acid revealed excellent photocatalytic activity for the degradation process of Rhodamine B,
and recyclability experiments demonstrate that it retains 91% of its photocatalytic activity after
four recycles. Scavenger experiments indicate that both the hydroxyl radical and the hole are key
species for the success of the transformation. A reaction pathway is proposed that involves a series
of dissolution−hydration–dehydration and precipitation processes, mediated by the complexation
of Ag+
. We believe these studies contribute to a fundamental understanding of the crystallization
process and provide guidance as to how carboxylic acids can influence the synthesis of materials
with controlled size and morphology, which is promising for multiple other scientific fields, such as
sensor and catalysis fields. [-]
Is part of
Nanomaterials, Vol. 12, Issue 19 (October-1 2022)Funder Name
FAPESP (Fundação de Amparo à Pesquisa do Estado de São Paulo) | CAPES (Coordenação de Aperfeiçoamento de Pessoal de Nível Superior) | Universitat Jaume I | Ministerio de Ciencia, Innovación y Universidades (España) | Margarita Salas | Conselho Nacional de Desenvolvimento Cientifico e Tecnológico
Project code
2013/07296-2 | 88887.353710/2019-00 | UJI-B2019-30 | POSDOC/2019/30 | PGC2018094417-B-I00 | MGS/2021/21, UP2021- 021 | 305757/2018-0 | 312733/2021-6
Project title or grant
Química teórica y computacional: desde la caracterización de los nuevos poliformos (estructura, estabilidad relativa, propiedades eléctricas y ópticas, transiciones de fase inducidas por presión) hasta la reactividad química (correlación entre la mecánica cuántica, la distribución electrónica y los mecanismos de reacción) | New semiconductor: the effect of electron irradiation | Rational approaches toward the design of the materials by combining theory and experiment (APDEMAT_THEOEXP) | Nanocomposites based on inorganic nanomaterials. Developments of new catalysts ans biomaterials
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