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A Polypyridyl‐Based Layered Complex as Dual‐Functional Co‐catalyst for Photo‐Driven Organic Dyes Degradation and Water Splitting
Author(s) -
Li Lei,
Huang Lu,
Liu ZhengYu,
Zhao XiaoJun,
Yang EnCui
Publication year - 2019
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201900007
Subject(s) - water splitting , photocatalysis , rhodamine b , catalysis , photochemistry , methyl orange , chemistry , degradation (telecommunications) , hydrogen production , photocatalytic water splitting , redox , photosensitizer , pyridine , band gap , materials science , inorganic chemistry , organic chemistry , telecommunications , optoelectronics , computer science
With the ever‐increasing concerns on environmental pollution and energy crisis, it is of great urgency to develop high‐performance photocatalyst to eliminate organic pollutants from wastewater and produce hydrogen via water splitting. Herein, a polypyridyl‐based mixed covalent Cu I/II complex with triangular {Cu 3 } and rhombic {Cu 2 Cl 4 } subunits alternately extended by mixed SCN – and Cl – heterobridges [Cu 4 (DNP)(SCN)Cl 4 ] n ( 1 ) [DNP = 2,6‐bis(1,8‐naphthyridine‐2‐yl)pyridine] was solvothermally synthesized and employed as a dual‐functional co‐photocatalyst. Resulting from a narrowed band‐gap of 1.07 eV with suitable redox potential and unsaturated Cu I/II sites, the complex together with H 2 O 2 can effectively degrade Rhodamine B and methyl orange up to 87.4 and 88.2 %, respectively. Meanwhile, the complex mixed with H 2 PtCl 6 can also accelerate the photocatalytic water splitting in the absence of a photosensitizer with the hydrogen production rate of 27.5 μmol · g –1 · h –1 . These interesting findings may provide informative hints for the design of the multiple responsive photocatalysts.