Green Synthesis and Photogenerated Charge Carriers Transfer in SnO2 QDs Decorated rGO Nanosheets for Highly Efficient Visible Light Photocatalysis

Effects of annealing temperature on the structure, morphology, and photocatalytic properties of SnO2/rGO nanocomposites

“…Among semiconducting oxides, SnO 2 is of great interest as it is an n-type semiconductor with an eco-friendly, largely non-hazardous nature as well as excellent properties [1,[6][7][8][9][10][11][12][13][14]. Additionally, SnO 2 has better oxidizing ability toward environmental pollutants than TiO 2 due to its more positive valence band [6,11,15].…”

“…Graphene is a single layer of two-dimensional carbon atoms with a honeycomb structure [4,10,12,[15][16][17]. Furthermore, it is widely regarded as a promising candidate for applications such as storage devices, photocatalysts, optoelectronic devices, chemical sensors, and supercapacitors because of its excellent electrical, mechanical, and thermoelectric properties [1,2,9,16,[18][19][20][21][22][23][24].…”

“…In addition, graphene has significant optical absorption in the visible light range. Studies on SnO 2 /reduced graphene oxide (rGO) photocatalysts have shown that the photocatalytic activity is significantly increased by fast charge transfer, which promotes electron-hole pair separation and limits fast recombination [6,12,15,22]. In addition, SnO 2 /rGO exhibits good photocatalytic activity under visible light [1,25].…”

“…Further, SnO 2 nanoparticles are more dispersible and rGO sheets are better separated in SnO 2 /rGO [1,2]. It is well known that the photocatalytic performance of SnO 2 /rGO depends on factors such as visible light absorption, charge separation, morphology, dispersion of SnO 2 nanoparticles, GO concentration, and details related to the synthesis method [1,4,12,15]. Among these factors, the effect of annealing temperatures on the photocatalytic properties of SnO 2 /rGO has not yet been studied.…”

Preparation of rGO/AgCl QDs and its enhanced photoelectrocatalytic performance for the degradation of Tetracycline

“…Tian et al had synthetized N, S‐GQDs/rGO/TiO 2 NT ternary composites and reported its enhanced photocatalytic activity. Gomathi et al had prepared SnO 2 QDs decorated rGO nanosheets for highly efficient visible light photocatalysis. These results indicated that the coupling of QDs and graphene have good potentials for applications in the field of photocatalysis.…”