Water Stable Zr-Benzenedicarboxylate Metal-Organic Frameworks as Photocatalysts for Hydrogen Generation

• Type: Article in International Scientific Journal
• Date: 2010

Authors

Claudia Gomes Silva (Author) FEUP; Ignacio Luz (Author) Other; Francesc X L I Llabres i Xamena (Author) Other; Avelino Corma (Author) Other; Hermenegildo Garcia (Author) Other

Journal

Title: Chemistry - A European Journal

Vol. 16

Pages: 11133-11138

ISSN: 0947-6539

Publisher: Wiley-Blackwell

Indexing

ISI Web of Knowledge - 392 Citations

ISI Web of Science

Scopus - 525 Citations

COMPENDEX

Scientific classification

FOS: Natural sciences > Chemical sciences

Other information

Authenticus ID: P-008-NPN

DOI: 10.1002/chem.200903526

Abstract (EN): The Zr-containing metal-organic frameworks (MOFs) formed by terephthalate (UiO-66) and 2-amino-terephthalate ligands [UiO-66(NH2)] are two notably water-resistant MOFs that exhibit photocatalytic activity for hydrogen generation in methanol or water/methanol upon irradiation at wavelength longer than 300 nm. The apparent quantum yield for H-2 generation using monochromatic light at 370 nm in water/methanol 3:1 was of 3.5% for UiO-66(NH2). Laser-flash photolysis has allowed detecting for UiO-66 and UiO-66(NH2) the photochemical generation of a long lived charge separated state whose decay is not complete 300 mu s after the laser flash. Our finding and particularly the influence of the amino group producing a bathochromic shift in the optical spectrum without altering the photochemistry shows promises for the development of more efficient MOFs for water splitting.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6