Highly-efficient photocatalytic activity of TiO2-AC nanocomposites for hydrogen production from sulphide wastewater

Sankar Sekar; V. Preethi; V. S. Srivishnu; S. Saravanan; Sejoon Lee

doi:10.1016/j.ijhydene.2022.02.019

Highly-efficient photocatalytic activity of TiO₂-AC nanocomposites for hydrogen production from sulphide wastewater

Sankar Sekar, V. Preethi, V. S. Srivishnu, S. Saravanan, Sejoon Lee

Research output: Contribution to journal › Article › peer-review

31 Scopus citations

Abstract

Photocatalytic water splitting is one of the prospective green energy technologies, particularly, for hydrogen production from wastewater under natural sunlight irradiation. Herein, we report experimental data on the synthesis and characteristics of the biomass activated carbon (b-AC)-anchored anatase titanium oxide (a-TiO₂) nanocomposites, which were ultrasonically prepared by using the sol-gel-grown a-TiO₂ spherical nanoparticles and the KOH-activated citron-derived b-AC nanoflakes. The a-TiO₂/b-AC nanocomposites displayed an aggregated morphology with the interconnected spherical nanoparticles, and they showed a high surface area (495 m²/g). When using a-TiO₂/b-AC as a photocatalyst for hydrogen production from sulphide wastewater (0.15 M) under solar irradiation (740 W/m²), the superb hydrogen production efficiency was achieved up to 400 mL/h. The results suggest the a-TiO₂/b-AC nanocomposites to hold an ample potential for photocatalytic hydrogen production from the wastewater.

Original language	English
Pages (from-to)	40275-40285
Number of pages	11
Journal	International Journal of Hydrogen Energy
Volume	47
Issue number	95
DOIs	https://doi.org/10.1016/j.ijhydene.2022.02.019
State	Published - 8 Dec 2022

Keywords

Activated carbon
Hydrogen production
Photocatalysts
Spherical nanoparticles
TiO

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This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.ijhydene.2022.02.019

Cite this

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title = "Highly-efficient photocatalytic activity of TiO2-AC nanocomposites for hydrogen production from sulphide wastewater",

abstract = "Photocatalytic water splitting is one of the prospective green energy technologies, particularly, for hydrogen production from wastewater under natural sunlight irradiation. Herein, we report experimental data on the synthesis and characteristics of the biomass activated carbon (b-AC)-anchored anatase titanium oxide (a-TiO2) nanocomposites, which were ultrasonically prepared by using the sol-gel-grown a-TiO2 spherical nanoparticles and the KOH-activated citron-derived b-AC nanoflakes. The a-TiO2/b-AC nanocomposites displayed an aggregated morphology with the interconnected spherical nanoparticles, and they showed a high surface area (495 m2/g). When using a-TiO2/b-AC as a photocatalyst for hydrogen production from sulphide wastewater (0.15 M) under solar irradiation (740 W/m2), the superb hydrogen production efficiency was achieved up to 400 mL/h. The results suggest the a-TiO2/b-AC nanocomposites to hold an ample potential for photocatalytic hydrogen production from the wastewater.",

keywords = "Activated carbon, Hydrogen production, Photocatalysts, Spherical nanoparticles, TiO",

author = "Sankar Sekar and V. Preethi and Srivishnu, {V. S.} and S. Saravanan and Sejoon Lee",

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AU - Sekar, Sankar

AU - Preethi, V.

AU - Srivishnu, V. S.

AU - Saravanan, S.

AU - Lee, Sejoon

PY - 2022/12/8

Y1 - 2022/12/8

N2 - Photocatalytic water splitting is one of the prospective green energy technologies, particularly, for hydrogen production from wastewater under natural sunlight irradiation. Herein, we report experimental data on the synthesis and characteristics of the biomass activated carbon (b-AC)-anchored anatase titanium oxide (a-TiO2) nanocomposites, which were ultrasonically prepared by using the sol-gel-grown a-TiO2 spherical nanoparticles and the KOH-activated citron-derived b-AC nanoflakes. The a-TiO2/b-AC nanocomposites displayed an aggregated morphology with the interconnected spherical nanoparticles, and they showed a high surface area (495 m2/g). When using a-TiO2/b-AC as a photocatalyst for hydrogen production from sulphide wastewater (0.15 M) under solar irradiation (740 W/m2), the superb hydrogen production efficiency was achieved up to 400 mL/h. The results suggest the a-TiO2/b-AC nanocomposites to hold an ample potential for photocatalytic hydrogen production from the wastewater.

AB - Photocatalytic water splitting is one of the prospective green energy technologies, particularly, for hydrogen production from wastewater under natural sunlight irradiation. Herein, we report experimental data on the synthesis and characteristics of the biomass activated carbon (b-AC)-anchored anatase titanium oxide (a-TiO2) nanocomposites, which were ultrasonically prepared by using the sol-gel-grown a-TiO2 spherical nanoparticles and the KOH-activated citron-derived b-AC nanoflakes. The a-TiO2/b-AC nanocomposites displayed an aggregated morphology with the interconnected spherical nanoparticles, and they showed a high surface area (495 m2/g). When using a-TiO2/b-AC as a photocatalyst for hydrogen production from sulphide wastewater (0.15 M) under solar irradiation (740 W/m2), the superb hydrogen production efficiency was achieved up to 400 mL/h. The results suggest the a-TiO2/b-AC nanocomposites to hold an ample potential for photocatalytic hydrogen production from the wastewater.

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