Synthesis, crystal structure and optical properties of a naphthylbisimide-Ni complex: a framework on TiO sub(2) for visible light H sub(2) production

A novel ligand N,N'-di-(3-(pyridin-2-yl)- 1H-pyrazole-5-carbohydrazide) naphthalene 1,4,5,8-tetracarboxylic acid bisimide (PPNB) and its nickel (ii) complex (Ni-PPNB) were synthesized and systematically characterized. Both the molecules show higher sensitization activity on the TiO sub(2) semic...

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Bibliographic Details
Published in:Dalton transactions : an international journal of inorganic chemistry 2014-10, Vol.43 (42), p.15704-15707
Main Authors: Bala, Sukhen, Mondal, Indranil, Goswami, Arijit, Pal, Ujjwal, Mondal, Raju
Format: Article
Language:English
Subjects:
Crystal structure
Ligands
Nickel
Optical properties
Photocatalysis
Photocatalysts
Synthesis (chemistry)
Titanium dioxide
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Summary:A novel ligand N,N'-di-(3-(pyridin-2-yl)- 1H-pyrazole-5-carbohydrazide) naphthalene 1,4,5,8-tetracarboxylic acid bisimide (PPNB) and its nickel (ii) complex (Ni-PPNB) were synthesized and systematically characterized. Both the molecules show higher sensitization activity on the TiO sub(2) semiconducting system. These composites have interesting photophysical properties as they enable photocatalytic hydrogen production from water with a sacrificial electron donor (SED) using visible light, while neither component alone is able to do so. The photocatalysts have shown long term stability and a maximum turnover number (TON) of 7866 based on Ni-PPNB was obtained after 6 h of irradiation at a catalyst concentration of 2.5 10 super(-5) mol g super(-1).
ISSN:1477-9226
1477-9234
DOI:10.1039/c4dt02006e