Recent Advances on Alloyed Quantum Dots for Photocatalytic Hydrogen Evolution: A Mini-Review

Abstract

Hydrogen is becoming a promising eco-friendly energy carrier to replace traditional nonrenewable fossil fuels. In this context, photocatalytic water splitting photosystems are considered a green tactic. Alloyed quantum dots (QDs) are considered as earth abundant, low cost, and environmentally friendly photocatalysts to be utilized effectively in photocatalytic H 2 evolution. H 2 production efficiency greatly depends upon tunable optical and electronic properties associated with chemical composition as well as nanoscale particle sizes of alloyed QDs. Recent efforts toward the fabrication of various alloyed QDs by varying the surface atomic ratio and ligand exchange for photocatalytic hydrogen production has been presented and appraised here. Furthermore, in this review, we presented the microstructure and optical properties of alloyed QDs with their advantages and the construction of efficient cadmium-bound and cadmium-free alloyed QDs toward a photocatalytic hydrogen evolution reaction. At last, the challenges as well as critical issues of alloyed QDs and alloyed QDs-based photocatalysts for H 2 evolution has been proposed, with the hope that this mini-review will give a superior perceptive of different alloyed QDs.

Robust direct Z-scheme exciton transfer dynamics by architecting 3D BiOI MF-supported non-stoichiometric Cu0.75In0.25S NC nanocomposite for co-catalyst-free photocatalytic hydrogen evolution

“…From this perspective, green fuel hydrogen production via solar-light illuminated water-splitting is considered an imperative area of research because of its potential applications in renewable energy generation and environmental clean-up. 1,2 As hydrogen has good specic enthalpy and a benign combustion product, i.e. water, it is proposed as a promising energy source for dropping the vulnerability of fossil fuels and the consequent release of greenhouse gases.…”

Photocatalytic Activity of Supported Metal Nanoparticles and Single Atoms

“…Enhanced performance of photocatalysts relies on elevated light harvesting efficiency, high charge isolation, charge mobility and decreased rate for exciton recombination [31] . Advancements have been made to boost performance of metal‐free photocatalysts based on COFs and g‐C 3 N 4 for energy conversion [32] .…”

CIS QDs nucleated on oxygen vacancy rich BOI microplates: a hybrid photocatalyst with enhanced green energy production via mediator free Z-scheme dynamics

“…Zero-dimensional (0D) quantum dots (QDs) have drawn research attention due to their ultra-small size (>10 nm), extensive absorption in the visible as well as near-infrared (IR) region, high intrinsic dipole moment, high surface to volume ratio, bulky surface binding ability and their foremost property, the quantum confinement effect. 1,2 From this standpoint, QDs have vast applications over a wide range of areas. Of these, photocatalytic water-splitting involving renewable feedstocks such as water and solar light has become one of the most promising, cost-effective, carbon-free energy sources and environmentally-friendly technologies that may provide a solution to the comprehensive issues of the current energy crisis and environmental onslaught.…”