Aerosol‐Assisted Molten Salt Synthesis of NaInS₂ Nanoplates for Use as a New Photoanode Material

Abstract

NaInS(2) , a H(2) -evolving photocatalyst, is synthesized as single-crystalline hexagonal plates by coupling a molten salt synthesis with ultrasonic spray pyrolysis (USP) for the first time. USP NaInS(2) films are used as a new photoanode material and have an initial photocurrent of ≈37 μA/cm(2) upon illumination and activities 25 times greater than films made from a standard non-aerosol NaInS(2) sample.

Amorphous Molybdenum Sulfide/Carbon Nanotubes Hybrid Nanospheres Prepared by Ultrasonic Spray Pyrolysis for Electrocatalytic Hydrogen Evolution

“…The overall yield can be as high as ≈85%. More importantly, this process can be operated in a continuous manner, and can be easily scaled up for mass production …”

“…Here, we demonstrate a novel ultrasonic spray pyrolysis (USP) approach to synthesize hybrid nanospheres consisted of amorphous MoS x and carbon nanotubes (hereafter referred to as the MoS x /CNTs) as efficient and durable electrocatalysts for HER. USP is a very convenient approach to prepare hybrid functional materials with tunable compositions . The short pyrolysis time is especially suitable for the synthesis of amorphous materials via thermal decomposition of appropriate precursors.…”

Towards Shape Control of Metal Oxide Nanocrystals in Confined Molten Media

“…This review provides a qualitative description of the design principles involved in AMSS on the basis of crystal growth theory and conventional molten salt synthesis. A number of systems were highlighted to illustrate the application of AMSS towards shape‐defined metal oxides in hopes to expand this technique towards more complex compositions, including metal sulfides, oxynitrides, and nitrides . Traditionally, spray syntheses have been a premier route to fine powders of compositionally complex materials; however, structural control of crystallites has not been explored widely.…”

Sonochemical catalysis as a unique strategy for the fabrication of nano-/micro-structured inorganics

“…[126] By tuning the precursor concentrations and furnace temperatures, the microsphere morphology could be controlled, for instance, the synthesis yielded amorphous MnO 2 microspheres at 150 °C but a crystalline α-MnO 2 at 500 °C. In the study of Skrabalak et al, [127] ultrasonic spray pyrolysis coupling with a molten salt synthesis successfully produced single-crystalline hexagonal NaInS 2 nanoplates with an average diameter of 572 ± 175 nm and a width of 51 ± 16 nm, and the photoanode films fabricated by NaInS 2 nanoplates provided nearly 25 times greater photocurrent upon illumination than the films made with traditional NaInS 2 . Later in order to develop a facile and general synthetic strategy toward the particles with size, shape and compositional control, they described a simple reactor for ultrasonic spray synthesis, [128] where the particle formation occurred within spatially and temporally confined droplets.…”