Vertically aligned ZnO/In2S3 core/shell heterostructures with enhanced photoelectrochemical properties

Photoconversion efficiency of In2S3/ZnO core-shell heterostructures nanorod arrays deposited via controlled SILAR cycles

“…These two broad peaks centered at 28.15 and 32.61 corresponded to the (109) and (0012) diffraction planes of the tetragonal crystal structure of β-In 2 S 3 (tallied with the JCPDS card number 00-025-0390). These results agreed well with other reported findings [17,33,34]. The formation of the tetragonal In 2 S 3 can be ascribed to the stability of this phase at room temperature [38].…”

“…The thermodynamic water splitting potential slandered the reversible redox potential of H 2 O electrolysis in accordance with the standard H electrodes (NHE) is 1.23 V. respectively. These observations were in good agreement with other reports [17,33]. After placing the In 2 S 3 coating over the ZNRAs, the presence of the predominant (002) XRD peak clearly showed that ZNRAs could grow with their c-axis orientation normal to the ITO surface.…”

“…Different types of the MOSCs (like TiO 2 , ZnO, and WO 3 ) are frequently employed as photoelectrodes in the PECs for the water splitting and hydrogen production due to their inexpensiveness, high stability and non-toxicity [14,15,16]. Amongst all the MOSCs, the ZnO nanorods (ZNRs) are preferred as electrode in the PECs for water splitting due to their desirable morphology, wide energy band gap and ease of fabrication [17]. Conversely, the PCE of the pure ZNRs for the photoelectrochemical water splitting applications is limited due to their optical absorption only in the ultraviolet (UV) region.…”

“…The low energy band gap semiconductor like In 2 S 3 became promising due to the possibility of forming the heterojunctions with the ZNRs [32]. To achieve an efficient PEC for water splitting, the electro-deposition [33,34] and successive ionic layer absorption and reaction (SILAR) [17] technique was used to make diverse In 2 S 3 /ZnO NWs. Strothkamper et al [35] used the spray-ions-layer gas reaction method to synthesize various In 2 S 3 /ZnO NRs wherein the main aim was to determine their ability for the carriers' separation and transport.…”

Enhanced catalytic property of metal oxide for an efficient visible-induced photoelectrochemical water splitting

“…where C, e, e, and e o are the specific capacitance, elementary charge value, relative permittivity of the semiconductor (e = 10 for ZnO), and permittivity of vacuum, respectively. K B and T represented Boltzmann constant and absolute temperature, respectively [42]. V fb values correspond to the intercepts that were obtained by extrapolating the M-S curves to the X-axis (potential) as depicted in Table 3.…”