Lattice-oriented contact in Pd/SrTiO3 heterojunction for rapid electron transfer during photocatalytic H2 production

Li, Xinru; Ge, Zhichao; Xue, Fei; Liu, Hui; Lyu, Bin; Liu, Maochang

doi:10.1016/j.materresbull.2019.110722

Cited by 27 publications

(15 citation statements)

References 33 publications

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“…To further boost the photoactivity of Zn x Cd 1−x S photocatalysts, integrating suitable cocatalysts to trap charges carriers and serve as delicate surface reactive sites would be a productive approach. However, as the most common cocatalyst, the application of noble metals (e.g., Pt and Pd) can be confined only to bench scale because of their high cost and scarcity (Gao et al, 2019 ; Li et al, 2020a , b ). Therefore, the exploration and development of alternative noble metal–free but active cocatalysts are highly desired.…”

Section: Introductionmentioning

confidence: 99%

One-Pot Hydrothermal Synthesis of MoS2/Zn0.5Cd0.5S Heterojunction for Enhanced Photocatalytic H2 Production

Xue

et al. 2020

Front. Chem.

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A series of molybdenum disulfide (MoS 2 )/Zn 0. 5Cd 0.5 S heterojunctions have been prepared via a mild one-pot hydrothermal method based on the optimization of composition content of primary photocatalyst. The photocatalysts demonstrated significantly improved visible light–driven photocatalytic activity toward H 2 evolution from water without using any noble metal cocatalyst. Among the as-prepared composites, 0.2% MoS 2 /Zn 0.5 Cd 0.5 S shows the best performance. The highest H 2 evolution rate reaches 21 mmol · g −1 · h −1 , which is four times higher than that of pure Zn 0.5 Cd 0.5 S. The apparent quantum efficiency is about 46.3% at 425 nm. The superiority is attributed to the tight connection between MoS 2 and Zn 0.5 Cd 0.5 S by this facile one-step hydrothermal synthesis. As a result, the formation of the heterostructure introduces built-in electric field at the interface that facilitates vectorial charge transfer. More specifically, photogenerated electrons transfer to MoS 2 to conduct proton reduction, where the holes are retained on the surface of Zn 0.5 Cd 0.5 S to react with the sacrificial reagents. Moreover, the composite presents improved stability without notable activity decay after several cycled tests.

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Section: Introductionmentioning

confidence: 99%

One-Pot Hydrothermal Synthesis of MoS2/Zn0.5Cd0.5S Heterojunction for Enhanced Photocatalytic H2 Production

Xue

et al. 2020

Front. Chem.

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“…(A. Abdel-Latif 2019). It has been reported that pure SrTiO 3 (Huang et al 2014;Xie et al 2018;Gao et al 2018) or ions doped SrTiO 3 (Konta et al 2004;Wu and He 2018a;Li et al 2020) can show effective photocatalysis of organic pollutants under UV or Visible light irradiation.…”

Section: Introductionmentioning

confidence: 99%

“…A good photosensitizer might exhibit high optical absorption at a large range of wavelengths, especially in the visible region, and a sufficiently long life of the excited state to react with the semiconductors. In addition, the construction of metal semiconductor composites by the introduction of noble metal nanoparticles is also a promising method (Konta et al 2004;Li et al 2020). For instance, Attout and colleagues created a bimetallic complex Au-Ag, which they grafted on the surface of P25-TiO 2 NPs and then incorporated into rGO sheets, resulting in an increase in visible light absorption and a reduction in the bandgap, which improved charge carrier separation and thus improved photocatalytic activity.…”

Section: Introductionmentioning

confidence: 99%

Interfacial coupling effects on adsorptive and photocatalytic performances for photoresponsive graphene-wrapped SrTiO3@Ag under UV–visible light: experimental and DFT approach

Guediri

Chebli

Bouguettoucha

et al. 2022

Environ Sci Pollut Res

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Understanding the graphene/semiconductor/metal interactions is crucial to design innovative photocatalytic materials with efficient photocatalytic activity for environmental cleanup applications. SrTiO 3 on reduced graphene oxide (rGO) with various graphene contents was successfully synthesized in this study utilizing a simple hydrothermal method, followed by decorating the surface with Ag particles by using the photodeposition process. Under UVvisible light irradiation, the resulting composites were tested for their improved photocatalytic activity to decompose methylene blue (MB). The prepared photocatalysts were characterized by XRD, SEM, EDX, DLS, FT-IR, Raman spectroscopy, and DRS. First-principles density functional theory calculations (DFT) were also carried out by using the generalized gradient approximation (GGA) and PBE functional with the addition of on-site Coulomb correction (GGA + U). The obtained SrTiO 3 /rGO@Ag composites showed great improvement in the photocatalytic performances over pristine SrTiO 3 . For the degradation reaction of MB,SrTiO 3 /rGO 20% @Ag 4% composites yielded the best photocatalytic activity with efficacy reach 94 %, which was also shown that it could be recycled up to four times with nearly unchanged photocatalytic activity.

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“…Up to this moment, ATiO 3 compounds have been employed for photocatalytic hydrogen production [28][29][30], degradation of toxic aqueous pollutants [30][31][32][33][34][35][36][37], gas sensing [38,39], microwave applications [40], water purification [41], and photovoltaic applications [42][43][44]. In TiO 2 and TiO 2 -related materials the photocatalytic degradation of gaseous pollutants like toluene [45][46][47], nitric oxides NO x [48][49][50], and 2-propanol [51] has been studied.…”

Section: Introductionmentioning

confidence: 99%

Metal Titanate (ATiO3, A: Ni, Co, Mg, Zn) Nanorods for Toluene Photooxidation under LED Illumination

et al. 2021

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The increasing air pollution taking place in virtue of human activity has a novel impact in our health. Heterogeneous photocatalysis is a promising way of degrading volatile organic compounds (VOCs) that makes the quest of new and improved photocatalysts of great importance. Herein, perovskite-related materials ATiO3 with A = Mg, Ni, Co, Zn were synthesized through an ethylene glycol-mediated root, with ethylene glycol being used as a solvent and ligand. Characterization techniques such as X-ray diffraction (XRD), scanning electron microscopy, and energy dispersive X-ray spectroscopy (SEM/EDX), transmission electron microscopy (TEM), UV-vis spectroscopy, Raman spectroscopy, Fourier transform infrared (FT-IR), and photoluminescence spectroscopy (PL) were used in order to confirm the structure, the nanorod morphology, their absorption in UV-vis, and the separation efficiency of photogenerated charge carriers. The highest photoactivity was observed for ZnTiO3 in which 62% of toluene was decomposed after 60 min under LED illumination (54 mW/cm2).

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Lattice-oriented contact in Pd/SrTiO3 heterojunction for rapid electron transfer during photocatalytic H2 production

Cited by 27 publications

References 33 publications

One-Pot Hydrothermal Synthesis of MoS2/Zn0.5Cd0.5S Heterojunction for Enhanced Photocatalytic H2 Production

One-Pot Hydrothermal Synthesis of MoS2/Zn0.5Cd0.5S Heterojunction for Enhanced Photocatalytic H2 Production

Interfacial coupling effects on adsorptive and photocatalytic performances for photoresponsive graphene-wrapped SrTiO3@Ag under UV–visible light: experimental and DFT approach

Metal Titanate (ATiO3, A: Ni, Co, Mg, Zn) Nanorods for Toluene Photooxidation under LED Illumination

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