Concentrated solar photocatalysis for hydrogen generation from water by titania-containing gold nanoparticles

Choudhary

et al. 2021

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143

Section: Tio 2 -Based Materials For Plasmonic Photocatalysismentioning

confidence: 99%

Recent Advances in Plasmonic Photocatalysis Based on TiO₂ and Noble Metal Nanoparticles for Energy Conversion, Environmental Remediation, and Organic Synthesis

Choudhary

et al. 2021

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248

143

“…The photocatalyst efficiency is affected not only by the nature of the alloying element but also by its concentration. For example, X. Xing et al in [ 63 ] demonstrated the dependence of the yield of hydrogen on the light intensity and the concentration of the dopant. From Figure 6 a, it is clear that the increase of concentrations of each photocatalyst (pure TiO 2 and Au/TiO 2 ) results in increase of the rate of hydrogen production.…”

Section: The Utilization Of Photocatalysts Based On Tio mentioning

confidence: 99%

“… ( a ) Hydrogen evolution of pure TiO 2 nanoparticles and Au/TiO 2 nanoparticles at the same light intensity of 5 kW/m 2 ; ( b ) Hydrogen evolution in 1–9 kW/m 2 light intensities of 1 g/L Au/TiO 2 solutions. Both figures are reprinted from [ 63 ], with permission from Elsevier, 2020. …”

Section: Figurementioning

confidence: 99%

Recent Developments of TiO2-Based Photocatalysis in the Hydrogen Evolution and Photodegradation: A Review

et al. 2020

The growth of industrialization, which is forced to use non-renewable energy sources, leads to an increase in environmental pollution. Therefore, it is necessary not only to reduce the use of fossil fuels to meet energy needs but also to replace it with cleaner fuels. Production of hydrogen by splitting water is considered one of the most promising ways to use solar energy. TiO2 is an amphoteric oxide that occurs naturally in several modifications. This review summarizes recent advances of doped TiO2-based photocatalysts used in hydrogen production and the degradation of organic pollutants in water. An intense scientific and practical interest in these processes is aroused by the fact that they aim to solve global problems of energy conservation and ecology.

“…Photocatalysis may also be used for hydrogen production from water, by using titaniacontaining gold nanoparticles [99], or wastewater pollutant removal, by using TiO 2 -based catalysts [100,101] or metal halide perovskites [102]. In the latter processes, the contemporary targets of hydrogen production and the abatement of harmful pollutants may be reached, with an evident environmental benefit.…”

Section: Photocatalytic Methodsmentioning

confidence: 99%

Main Hydrogen Production Processes: An Overview

et al. 2021

Due to its characteristics, hydrogen is considered the energy carrier of the future. Its use as a fuel generates reduced pollution, as if burned it almost exclusively produces water vapor. Hydrogen can be produced from numerous sources, both of fossil and renewable origin, and with as many production processes, which can use renewable or non-renewable energy sources. To achieve carbon neutrality, the sources must necessarily be renewable, and the production processes themselves must use renewable energy sources. In this review article the main characteristics of the most used hydrogen production methods are summarized, mainly focusing on renewable feedstocks, furthermore a series of relevant articles published in the last year, are reviewed. The production methods are grouped according to the type of energy they use; and at the end of each section the strengths and limitations of the processes are highlighted. The conclusions compare the main characteristics of the production processes studied and contextualize their possible use.