Effect of medium solvents on crystalline degree and specific surface area of Cu<SUB align="right">3BiS<SUB align="right">3 nanoparticles synthesised by biomolecule-assisted hydrothermal and solvothermal methods

Mechanochemically Synthesized Chalcogenide Cu3BiS3 Nanocrystals in an Environmentally Friendly Manner for Solar Cell Applications

“…The measured values are in accordance with those reported for other mechanochemically prepared ternary sulfides [33,42]. Contrary to our mechanochemical synthesis, it is possible to obtain Cu 3 BiS 3 with a higher specific surface area around 17 m 2 g −1 when applying the biomolecule-assisted hydrothermal and solvothermal method [19].…”

“…The measured spectrum in the range from 200 nm to 800 nm, displayed in Figure 6, shows a broad absorption peak with increasing absorbance from 250 nm and a maximum at approximately 670 nm. The determined optical bandgap, 1.52 eV, calculated by the utilization of the Tauc equation (Equation ( 2)) and displayed by the Tauc plot in the inset of Figure 6 is in good accordance with previous reports [4,18,19,43,44]. Yan et al [18] and Chakraborty et al [44] used a hot-injection method to synthesize wittichenite nanocrystals with optical bandgaps of 1.56 eV and 1.5 eV, respectively.…”

“…Wittichenite Cu 3 BiS 3 nanocrystals, which exhibit a clear photoresponse in I-V measurement, were prepared by the hot-injection method by Yan et al [18]. Cu 3 BiS 3 nanoparticles synthesized by hydrothermal and solvothermal methods using L-cysteine biomolecules and a complexing agent were studied by Aup-Ngoen et al [19]. Wittichenite Cu 3 BiS 3 semiconductor thin films deposited on glass slides via a spray pyrolysis approach were investigated by Liu et al [20].…”

A Cu3BiS3 based photocathode for solar water splitting for hydrogen evolution

“…It was discovered that the reducibility of ethylenediamine contributed to the formation of more crystalline and larger nanoparticles. 55 In a further development, in 2018, Manimozhi et al employed the solvothermal method, utilizing the structure-oriented agent polyethylene glycol (PEG) as a soft template to synthesize three-dimensional flower-like Cu 3 BiS 3 nanostructures. Their investigation delved into the effects of CH 4 N 2 S concentration on the morphology, structure, and optical properties of Cu 3 BiS 3 , revealing that the optical band gap of Cu 3 BiS 3 nanoparticles varied from 1.66 eV to 1.97 eV, depending on the CH 4 N 2 S concentration.…”

“…Fig. 8 SEM images of Cu 3 BiS 3 nanocrystals synthesised in (a) de-ionised water and (b) ethylenediamine at 200 1C for 24 h 55. …”