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Graphene‐supported LaFeO 3 for photocatalytic hydrogen energy production
Author(s) -
Orak Ceren,
Yüksel Aslı
Publication year - 2021
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.6620
Subject(s) - hydrogen production , catalysis , calcination , photocatalysis , hydrogen , chemical engineering , materials science , hydrogen fuel , graphene , chemistry , nuclear chemistry , nanotechnology , organic chemistry , engineering
Summary Hydrogen is a green, environmentally benign and sustainable energy source with no harmful combustion products to fulfil the increasing energy demand. Photocatalytic oxidation has various advantageous to produce hydrogen from different sources such as wastewater, alcohol solutions using different types of catalysts. Sucrose solution was chosen as a model solution to evolve hydrogen using LFO and GLFO catalysts under solar light irradiation, and graphene was used as a catalyst support to enhance the amount of produced hydrogen amount. A characterization study, which consists of SEM‐EDX, BET, XRD, PL, TEM, XPS and FT‐IR analyses, was carried out. A full factorial design was created via Minitab 18 to analyse the factors affecting the produced hydrogen amount, which are pH, catalyst loading, H 2 O 2 concentration and graphene content statistically. Based on the results, graphene content is an important parameter and pH and H 2 O 2 concentration have a synergetic effect over hydrogen production. Additionally, the effects of calcination temperature, pH, H 2 O 2 concentration and catalyst loading over produced gases were investigated. The best promising result was obtained as 3388 μmol/g cat at the following reaction conditions: 7.5 of pH, 0.1 g L −1 catalyst loading (GLFO, which is calcined at 700°C) and using 15 mM H 2 O 2 under solar light irradiation. Novelty Statement Hydrogen is produced from sucrose solution with low cost process requiring no special equipment, high pressure or temperature. First study that uses perovskite catalysts for the production of hydrogen from sucrose solution by photo‐Fenton like oxidation GLFO is a promising photocatalyst for H 2 production by solar‐Fenton like oxidation with the highest H 2 evaluation at 3388.34 μmol/g cat .