Solar Light Responsive Graphitic Carbon Nitride Coupled Porphyrin Photocatalyst that Uses for Solar Fine Chemical Production

• Published in: Photochemistry and photobiology 2023-07, Vol.99 (4), p.1080-1091
• Main Authors: Mishra, Shaifali, Yadav, Rajesh K., Singh, Satyam, Chaubey, Surabhi, Singh, Pooja, Singh, Chandani, Gupta, Sarvesh Kumar, Gupta, Shivani, Tiwary, Dhanesh, Kim, Tae Wu
• Format: Article
• Language: English
• Subjects: Adenine; Carbon; Carbon nitride; Catalysts; Charge transfer; Condensates; Energy bands; Energy charge; Energy harvesting; Energy storage; Fine chemicals; NAD; Nicotinamide; Nicotinamide adenine dinucleotide; Nitrogen dioxide; Organic chemistry; Photocatalysis; Photocatalysts; Porphyrins; Recombination; Solar energy
• ISSN: 0031-8655; 1751-1097
• DOI: 10.1111/php.13735

Photocatalysis is a defendable manner for production of several organic chemicals, energy and its storage from solar energy. For the evolution of metal free, cost‐effective catalyst a 2D composite has been appear as a photocatalyst. Here, we had reported the synthesis of a light harvesting composite as a photocatalyst which was assembled by a poly‐condensation mechanism between graphitic carbon nitride and tetrakis(4‐nitrophenyl) porphyrin and the resulting composite manifest the excellent light harvesting properties, suitable energy band and low charge recombination. The photocatalyst [(NO2)4TPP@g‐C3N4] enables the efficient photocatalytic production of nicotinamide adenine dinucleotide (NADH) from consumed NAD+ also the production of organic chemicals like 4‐methoxybenzylimines from 4‐methoxybenzylamines. The photocatalytic efficiency of the photocatalyst was estimated by the percentage of NADH regeneration and the percentage yield of organic transformations. It shows the tetrakis(4‐nitrophenyl) porphyrin could enhance the charge transfer capacity of graphitic carbon nitride which shows excellent photocatalysis activities and organic transformations. This study reports the synthesis of highly selective light harvesting metal free photocatalyst that uses for energy storage and organic transformation. The graphitic carbon nitride and the 5,10,15,20 (4‐nitrophenyl) Porphyrin are the two monomers which condense to form an azo bond (N=N) in a (NO2)4TPP@g‐C3N4 photocatalyst. The photocatalyst then further helps in the reduction of NADH from a co‐factor NAD+ and transformation of 4‐methoxybenzylamines to imines, that is, oxidative coupling. The composition and structure of the photocatalyst can be justified by SEM, XPS, XRD, FT‐IR and UV spectroscopy. This light harvesting photocatalyst can helps in many industrials applications.