Photochemical synthesis of size-tailored hexagonal ZnS quantum dots

Abstract

ZnS quantum dots were synthetized at room temperature using a simple photochemical process involving ketyl radicals. Through the simple adjustment of reagent concentration, the method allows the control of nanoparticle size. Transmission electron microscopy confirmed that the nanomaterial adopts the hexagonal structure.

A facile photochemical strategy for the synthesis of high-performance amorphous MoS2 nanoparticles

“…24,25 Photons as a "traceless and green reagent" make the photochemical process greener and more sustainable. 26 For the past few years, photo-redox catalysis has made tremendous progress and widely been used in many aspects such as polycyclic addition and functionalization of organic substrates, 27 noble metal catalysis, [28][29][30] semiconductor synthesis, 31,32 carbon dioxide reduction, 33,34 polymer synthesis [35][36][37] and drug synthesis. [38][39][40][41] As far as we know, there has been no report on the photochemical synthesis of MoS 2 .…”

Synthesis of ZnSe and ZnSe:Cu quantum dots by a room temperature photochemical (UV‐assisted) approach using Na2SeO3 as Se source and investigating optical properties

“…These methods are mostly expensive, time consuming and are not environmentally friendly . The photochemical method is a room temperature method for the synthesis of QDs . Marandi et al reported photochemical synthesis of CdS QDs .…”

Charge Transport Characteristics of Surface‐Complexed Quantum Dot in a Thin Film Transistor

“…Synthesis of Mn +2 ‐Doped ZnS Quantum Dots : Water‐soluble Mn 2+ ‐doped ZnS colloidal Qdots having orange colored (580 nm) emission were synthesized and purified in aqueous medium using a previously reported method . Typically, a mixture of 1 × 10 −3 m solution of manganese acetate tetrahydrate and 5.0 × 10 −3 m solution of zinc acetate dihydrate was continuously stirred in aqueous medium at 80–90 °C.…”