Porous NiTiO₃/TiO₂nanostructures for photocatatalytic hydrogen evolution

Abstract

Porous NiTiO3/TiO2 heterostructures prepared from the annealing in air of TiO2 : Ni nanoneedle bundles displayed excellent photocatalytic activity toward hydrogen generation.

Synthesis of Highly Active Heterostructured Al2TiO5/TiO2 Photocatalyst in a Neutral Medium

“…The bandgap energy of the 33ATO/Ti, ATO, and TiO 2 (w) was calculated by the Tauc plot and exhibited the values of 3.06, 3.42 [22], and 3.14 eV [16], respectively. A similar conclusion was reported by Xing et al, and the introduction of NiTiO 3 enhanced the photocatalytic properties of TiO 2 as the surface area, light absorption, and charge separation [13]. These researches have confirmed that the particle size has an important effect on the catalyst properties.…”

“…The results elucidated that SrTiO 3 -TiO 2 boosted the separation efficiency of the photogenerated charge carriers [14]. Also, the porous NiTiO 3 /TiO 2 catalyst, synthesized by a hydrothermal route, exhibited excellent performance such as high surface area, high light absorption, and efficient charge separation for photocatalytic hydrogen generation [13]. Huang et al found that NiTiO 3 was an effective cocatalyst, which improved the photocatalytic activity of TiO 2 on the heterostructural NiTiO 3 /TiO 2 nanotubes [15].…”

“…The heterogeneous catalysts exhibited advantages like high performance, easy recovery, and cost-effectiveness [11]. One of the recent heterogeneous photocatalysts was materials from the hybridization of titanium oxide with perovskites to enhance the photocatalytic properties [12,13]. Wu et al demonstrated that the photoelectrochemical performance of the TiO 2 /SrTiO 3 catalyst was enhanced thanks to the charge separation and hole transportation [12].…”

Understanding Surface Recombination Processes Using Intensity‐Modulated Photovoltage Spectroscopy on Hematite Photoanodes for Solar Water Splitting

“…However, given the limitation of current battery technology, methods to store sunlight for long duration and at large scale are still needed. Instead, solar energy can be directly converted into chemical fuels, for instance hydrogen from water splitting or carbon‐based products from carbon dioxide reduction, using a semiconductor/electrolyte junction in a photoelectrochemical cell . Indeed, photoelectrochemical (PEC) hydrogen production has garnered growing attention ever since the first demonstration of photocatalytic water splitting on TiO 2 surface .…”

A Direct Z-Scheme for the Photocatalytic Hydrogen Production from a Water Ethanol Mixture on CoTiO3/TiO2 Heterostructures

“…The UV–visible light source contained two LEDs emitting at 372 ± 5 nm and two LEDs emitting visible light (correlated color temperature, 6099 K; color rendering index, 74; Figure S21). In this system, light irradiation at the sample position was 11.2 ± 0.5 mW·cm –2 for UV light and 0.017 ± 0. , 005 mW·cm –2 for visible light. ,, …”