Developing SrTiO3/TiO2 heterostructure nanotube array for photocatalytic fuel cells with improved efficiency and elucidating the effects of organic substrates

Enhanced Photoelectrochemical Property of TiO2 Nanotube Array Photoanode Deposited with Al,Cr-Codoped SrTiO3 Nanocubes

“…Figure a shows the equivalent circuit employed for fitting the PEIS data. Here, R 1 represents the internal resistance and R 2 corresponds to the photoanode/electrolyte charge transfer resistance . Constant phase element (CPE) is a circuit element used to represent the capacitive semicircular strain.…”

Nanostructural evolution of hydrothermally grown SrTiO3 perovskite and its implementation in gaseous phase detection of ethanol

“…Strontium titanate (SrTiO 3 ) exhibits an ideal model perovskite structure with outstanding physical properties [1][2][3][4] which includes large exciton binding energy [5], physicochemical stability [3], non-toxicity [6], suitable energy-band structure [2,3], the combination of electronic and ionic conductivity [4,6], along with rich dielectric [5,7], photoelectric [6,7] and catalytic properties [8]. To adopt the specific application, the physical properties of SrTiO 3 can easily be modified by controlling the oxygen stoichiometry [3,9,10].…”

“…Hydrothermal SrTiO 3 is usually prepared by reacting TiO 2 powder (rutile or anatase or amorphous titania) with a soluble Sr salt (SrCl 2 , Sr(NO 3 ) 2, Sr(OH) 2 ) [16][17][18][19][20][21]. The controlled morphology is achieved by modulating the temperature, reaction time, nature and concentration of the precursor and by changing the mineralizers or surfactants [1,7,10,16,21]. Dong et al synthesized SrTiO 3 polyhedral submicron nanocrystals using alcohols like ethanol, 1,4butanediol, ethylene glycol, 1,2-propanediol, etc with different acidities as surfactants.…”

“…The functionality and reactivity of nanomaterials are highly dependent on their different dimensions. A wide variety of morphologies of SrTiO 3 like nanocubes, nanoparticles, nanosphere, nanofiber, nanotubes, etc are developed by hydrothermal treatment and employed in various applications such as solid oxide fuel cells, multiferroic materials, water splitting, catalysts, medical devices, and photonic devices [6,7,[18][19][20][21]. Ha et al reported morphology-controlled SrTiO 3 /TiO 2 nanocube, nanoparticle, nanosphere, and nanofiber like heterostructures, by facile hydrothermal process and examined for photocatalytic performance.…”

Light-driven lignocellulosic biomass conversion for production of energy and chemicals

“… V oc = 1.02 V, P max = 0.4 mW/cm 2 under 100 mW/cm 2 irradiation. ( He et al., 2018b ) glycerol A: CdS-ZnS/TiO 2 on FTO C: Pd/C on Carbon Paper as self-breathing cathode 0.2 mol/L NaOH, 10% glycerol by volume Single chamber V oc = 0.95 V, P max = 2.58 mW/cm 2 at AM1.5G ( Li et al., 2015b ) glycerol A: NiPi-hematite on FTO C: Pt wires 0.1 mol/L phosphate buffer and 0.1 mol/L glycerol Dual chambers with Nafion membrane V oc = 0.48 V J sc = 1 mA/cm 2 P max = 2.58 mW/cm 2 , at AM1.5G ( Chong et al., 2017 ) formic acid A: SrTiO 3 /TiO 2 /Ti mesh C: Pt mesh 0.2 mol/L KCl, 0.2 mol/L formic acid Dual chambers with Nafion membrane P max = 0.055 mW/cm 2 at AM1.5G ( Lv et al., 2022 ) acetic acid A: CdS/TiO 2 on FTO C: Pt/C on Carbon Paper as self-breathing cathode 1 mol/L Na 2 SO 4 , 0.05 mol/L acetic acid Single chamber P max = 3.98 mW/cm 2 at AM1.5G ( Wang et al., 2014a ) acetic acid A: ZnFe 2 O 4 /TiO 2 on FTO C: Pt/C on Carbon Paper as self-breathing cathode 1 mol/L Na 2 SO 4 , 0.02 mol/L acetic acid Single chamber V oc = 0.52 V J sc = 0.046 mA/cm 2 P max = 0.0081 mW/cm 2 at AM1.5G ( Xie et al., 2017 ) phenol A: CdS/TiO 2 on Ti foils C: Pt-black/Pt 0.1 mol/L Na 2 SO 4 , 0.05 mol/L phenol Single chamber V oc = 1.73V J sc = 1.33 mA/cm ...…”