Study of layered double hydroxide (LDH) as potential bifunctional photocatalyst

• Grant number: 22/01314-8
• Support Opportunities: Regular Research Grants
• Start date: August 01, 2022
• End date: January 31, 2025
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Principal Investigator: Danilo Mustafa
• Grantee: Danilo Mustafa
• Host Institution: Instituto de Física (IF). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated researchers: Alysson Ferreira Morais ; Douglas Galante ; Itamar Tomio Neckel ; Ivan Guide Nunes da Silva ; Verônica de Carvalho Teixeira
• Associated scholarship(s): 24/14928-0 - In situ luminescence in rare earth based Layered Double Hydroxides, BP.IC; 24/17433-1 - In situ study os small angle X-ray scattering (SAXS) in nanostructured layered double hydroxides (LHDs)., BP.IC; 24/14963-0 - Rare earth based Layered Double Hydroxides for applications as thermometers, BP.IC

Abstract

Self-assembly of self-supported LDH nanotubes can be achieved by using a soft-templating strategy in combination with the incorporation of 8-fold coordinated Eu3+. Incorporating trivalent rare earth elements into the LDH sheets allows LDH hydroxide layers to curve, enabling self-assembly of the hydroxide sheets onto convex soft-template surfaces. Combining this approach with Pluronic P-123 worm-like micelles used as templates enabled the synthesis of well-defined, multiwalled, hollow, cylindrical LDH nanotubes with a typical central gallery of 20 nm and a specific surface area 5-fold higher (Patent: INPI: BR 10 2018 009266 9) as compared to standard flake-like LDHs. Based on this approach, this proposal aims to prepare HDL nanotubes with suitable compositions to serve as candidates for applications as heterogeneous photocatalysts using sunlight to perform water separation and subsequent CO2 reduction from ambient air. This new material could be used to meet the high demand for new functional materials in areas such as catalysis, separation science, chromatography, storage and gas detection. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

MORAIS, ALYSSON F.; SILVA, IVAN G. N.; FERREIRA, BRUNO J.; TEIXEIRA, ALEXANDRE C.; SREE, SREEPRASANTH P.; TERRASCHKE, HUAYNA; GARCIA, FERNANDO A.; BREYNAERT, ERIC; MUSTAFA, DANILO. Eu³⁺ doped ZnAl layered double hydroxides as calibrationless, fluorescent sensors for carbonate. CHEMICAL COMMUNICATIONS, v. 59, n. 91, p. 5-pg., 2023-10-30. (22/01314-8, 19/25665-1, 15/19210-0, 18/13837-0)

TEOTONIO, ERCULES E. S.; DOUNGMO, GISCARD; STROEH, JONAS; MUSTAFA, DANILO; COSTA, ISRAEL F.; BRITO, HERMI F.; KOTLOV, ALEKSEI; TERRASCHKE, HUAYNA. In Situ and Ex Situ Luminescence Investigation of Rare Earth Layered Double Hydroxides Intercalated with Mellitate Anion. ADVANCED OPTICAL MATERIALS, v. N/A, p. 14-pg., 2024-11-02. (22/01314-8, 22/12709-3, 21/08111-2)

DOUNGMO, G.; MORAIS, A. F.; MUSTAFA, D.; KAMGAING, T.; NJANJA, E.; ETTER, M.; TONLE, I. K.; TERRASCHKE, H.. How do layered double hydroxides evolve? First in situ insights into their synthesis processes. RSC ADVANCES, v. 12, n. 52, p. 10-pg., 2022-11-22. (18/13837-0, 15/19210-0, 22/01314-8)