Enhanced photocatalytic hydrogen energy production of g-C₃ N₄ -WO₃ composites under visible light irradiation

Abstract

Summary Highly efficient hybrid g‐C3N4/WO3 photocatalysts were fabricated by facile hydrothermal method for green hydrogen energy production under visible light irradiation. The nanostructures of WO3 nanoparticles and exfoliated graphitized C3N4 particles were prepared and were characterized by using X‐ray diffraction, scanning electron microscopy, ultraviolet visible spectroscopy, photoluminescence spectroscopy, and Brunauer‐Emmett‐Teller techniques. The average size of the pure WO3 nanostructures and those in the composites was 47 and 86 nm, respectively. The enhanced photocatalytic performance of the prepared nanocomposites was found by increasing content of g‐C3N4 up to 3%; however, further increase in doping content decreases the photocatalytic activity. The enhanced photocatalytic activity was attributed to extended visible light region, lower recombination rate, and high surface area. This in house developed g‐C3N4/WO3 photo catalytic material will be value added addition in the field of green hydrogen energy production.

Graphene‐supported LaFeO 3 for photocatalytic hydrogen energy production

“…10 Interest in photocatalytic hydrogen production in the presence of visible light has increased in recent years and many metal oxide semiconductor photocatalysts have been used in these studies. 11,12 For example; in Dong et al 13 study, ZnS and Cu-ZnS catalysts were used for hydrogen production from Na 2 S and Na 2 SO 3 containing aqueous solution containing an electron donor by photocatalytic oxidation. Chang et al 14 studied over the photocatalytic hydrogen production from NaCl, Na 2 S and Na 2 SO 3 containing aqueous solution as an electron donor in the presence of ZnS-graphene and Ni-doped ZnS-graphene.…”

Advancing energy and water solutions: Unleashing the potential of Nd2S3:Ni9S8 thin film for supercapacitors and sustainable water purification

“…These photocatalysts are excellent heavy metal sensors and have less of an influence on the environment 60 . Additionally, a very effective hybrid g‐C3N4/WO3 photocatalyst was created for the generation of green hydrogen energy 61 . Also, the impact of acids, bases, and surfactants was investigated in different research on the photocatalytic degradation of rhodamine B, a model dye 62 .…”

“…60 Additionally, a very effective hybrid g-C3N4/ WO3 photocatalyst was created for the generation of green hydrogen energy. 61 Also, the impact of acids, bases, and surfactants was investigated in different research on the photocatalytic degradation of rhodamine B, a model dye. 62 Additionally, biogenic photocatalysts have been created by researchers to break down methylene blue.…”

Role of Nanotechnology in Photocatalysis

“…Microbes in water are just thousand nanometer small while ordinary purifiers just lead with bacteria purifiers using nanotechnology are able to deal with virus without using any chemical, high temperature crushes and electricity. Photo-Impetuses and their studies on different fields is indicated in following studies ( Shahzad et al ., 2019 , 2020 ; Sagir et al ., 2014 ; Tahir et al, 2018a , Tahir et al, 2018b , Tahir et al, 2018c , Tahir et al, 2019a , Tahir et al, 2019b , Tahir et al, 2019c , Tahir et al, 2019d , Tahir et al, 2019e , Tahir et al, 2019f , Tahir and Sagir, 2019g , Tahir et al, 2019h , Tahir et al, 2020a , Tahir et al, 2020b , Tahir et al, 2020c , Tahir et al, 2020d ).…”