Efficient photoselectrochemical hydrogen production utilizing of APbI ₃ (A = Na, Cs, and Li) perovskites nanorods

Abstract

This study investigated the structural, morphological, and optical absorption of three separate perovskites (NaPbI 3 , CsPbI 3 , and LiPbI 3) developed by a lowcost and massive hydrothermal production technique. For all samples, X-ray diffraction (XRD) measurement demonstrated the growth of perovskites in the hexagonal phase along (002) orientation. From the scanning electron microscope (SEM) analyses, the perovskites have mixed morphologies between nano/micro rods and nano/microdiscs. In the visible field, NaPbI 3 demonstrated stronger light absorption than CsPbI 3 and LiPbI 3. The prepared perovskites were tested under visible light as working electrodes for water splitting reactions using Na 2 S 2 O 3 electrolyte. With 2.76% at 405 nm, the NaPbI 3 perovskite photoelectrode in accordance with its optical properties showed the highest incident photon-to-current efficiency (IPCE) among the studied perovskites. Also, the NaPbI 3 perovskite demonstrated higher PEC performance with an H 2 production rate of 38 μmolh −1 cm −2 than many other reported perovskites. The studied perovskites have high stability and reproductivity for the photoelectrochemical H 2 production.

Synthesis, Mesomorphic, and Solar Energy Characterizations of New Non-Symmetrical Schiff Base Systems

“…This behavior is consistent with the previously reported studies (Li et al, 2019). The strong absorption in the Visible/IR region and the extension of the bandgap edges are very important for solar energy applications, especially photoelectrochemical hydrogen generation and solar cells (Abdelmoneim et al, 2021;Mohamed et al, 2021;Shaban et al, 2021). Urbach energy (E U ) refers to the disorder in the material and represents the width of the exponential absorption edge Urbach tail of the valence and conduction bands (El Sayed and Shaban, 2015).…”

Nanoporous TiN/TiO2/Alumina Membrane for Photoelectrochemical Hydrogen Production from Sewage Water

“…The Ea values are 27.22 and 18.84 kJ·mol −1 for electrodes Al/Al 2 O 3 /TiO 2 /TiN and Al/Al 2 O 3 /TiO 2 /TiN/Au, respectively. The Ea values for both electrodes are low when compared to earlier published data for other photocatalysts [ 54 , 55 , 56 , 57 , 58 ]. So, the prepared electrodes are efficient for H 2 and O 2 evolution due to the water-splitting reaction [ 57 ].…”

“…From the Arrhenius equation, Equation (6), the activation energy (Ea) can be calculated depending on the particles collision and the rate of water splitting, in which k, R, and A are the rate, universal gas, and Arrhenius constants, respectively, and T is the absolute temperature [ 53 ]. From the Ea value, the degree of reaction occurrence is determined [ 54 , 55 , 56 ]. …”

Novel sulphonic acid liquid crystal derivatives: experimental, computational and optoelectrical characterizations

“…79 The strong absorption and the extension of the bandgap edges are very important for solar energy applications, especially photoelectrochemical hydrogen generation, and solar cells. [80][81][82] Urbach energy (E U ) refers to the disorder in the material and represents the width of the exponential absorption edge (Urbach tail of the valence and conduction bands). 81 The exponential dependency of E U can be determined according to the following equation: 83…”