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Published on: May 21, 2019
Supramolecular porphyrin as an improved photocatalyst for chloroform decomposition
J M S Lopes1,2, A A Batista3, P T Araujo4
1Department of Physics, Federal University of Roraima Boa Vista RR Brazil lopesjefferson01@yahoo.com.br.
Abstract:
In this work, the outlying decoration of the free-base meso-(4-tetra) pyridyl porphyrin (H2TPyP) with the RuCl(dppb)(5,5'-Me-bipy) ruthenium complex (here named Supra-H2TPyP) is observed as an improved molecular photocatalyst for dye-mediated chloroform (CHCl3) decomposition via one-photon absorption operating in the visible spectral range (532 nm and 645 nm). Supra-H2TPyP offers a better option for CHCl3 photodecomposition when compared to the same process mediated by pristine H2TPyP, which requires either excited-state- or UV absorption. The chloroform photodecomposition rates for Supra-H2TPyP as well as its excitation mechanisms are explored as a function of distinct laser irradiation conditions.
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