Reusability and stability of a novel ternary (Co–Cd–Fe)-LDH/PbI2 photoelectrocatalytst for solar hydrogen production

Abstract The design of highly active and cost-effective photoelectrocatalysts for effective hydrogen generation becomes a mandatory issue due to the demands on sustainable solar fuels. Herein a novel ternary Co–Cd–Fe LDH/PbI2 nanocomposite (T-LDH/PbI2NC) was fabricated by combining strategies of dop...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Fatma Mohamed, Nour Bhnsawy, Mohamed Shaban
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/d4732c631cff44ef86efadfe15dba85e
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:d4732c631cff44ef86efadfe15dba85e
record_format	dspace
spelling	oai:doaj.org-article:d4732c631cff44ef86efadfe15dba85e2021-12-02T15:52:59ZReusability and stability of a novel ternary (Co–Cd–Fe)-LDH/PbI2 photoelectrocatalytst for solar hydrogen production10.1038/s41598-021-85005-y2045-2322https://doaj.org/article/d4732c631cff44ef86efadfe15dba85e2021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-85005-yhttps://doaj.org/toc/2045-2322Abstract The design of highly active and cost-effective photoelectrocatalysts for effective hydrogen generation becomes a mandatory issue due to the demands on sustainable solar fuels. Herein a novel ternary Co–Cd–Fe LDH/PbI2 nanocomposite (T-LDH/PbI2NC) was fabricated by combining strategies of doping and in-situ loading of ternary Co–Cd–Fe LDH. The morphological, structural, and optical properties of PbI2, T-LDH, and T-LDH/PbI2 NC were studied by different techniques. LDH narrows the bandgap of the nanocomposite to 2.53 eV which prolongs the lifetime of the photo-induced electrons. Subsequently, the use of T-LDH/PbI2 NC improves the photoelectrocatalytic (PEC) H2 production rate. T-LDH/PbI2 NC shows a catalytic H2 production rate of 107.53 mmol h−1 cm−2 with IPCE% of 83.8% for 307 nm and 67.3% for 508 nm. The ABPE% reaches its supreme of 4.24% for − 0.58 V and 5.41% for − 0.97 V, these values are the highest values yet for LDH-based photocatalysts. The influences of the operating temperature and monochromatic illumination on the PEC performance were studied. Also, the electrochemical surface area, thermodynamic parameters, and Tafe slopes are calculated to label the hydrogen evolution mechanism. Moreover, the stability and reusability of the T-LDH/PbI2 NC photoelectrode were investigated. This work not only illustrated a simplistic and accessible way to produce a new category of highly efficient photocatalysts compared to the previously reported LDH-based PEC catalysts but also demonstrates a new point of view for improving PEC performance towards industrial water splitting under sunlight irradiation.Fatma MohamedNour BhnsawyMohamed ShabanNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Fatma Mohamed Nour Bhnsawy Mohamed Shaban Reusability and stability of a novel ternary (Co–Cd–Fe)-LDH/PbI2 photoelectrocatalytst for solar hydrogen production
description	Abstract The design of highly active and cost-effective photoelectrocatalysts for effective hydrogen generation becomes a mandatory issue due to the demands on sustainable solar fuels. Herein a novel ternary Co–Cd–Fe LDH/PbI2 nanocomposite (T-LDH/PbI2NC) was fabricated by combining strategies of doping and in-situ loading of ternary Co–Cd–Fe LDH. The morphological, structural, and optical properties of PbI2, T-LDH, and T-LDH/PbI2 NC were studied by different techniques. LDH narrows the bandgap of the nanocomposite to 2.53 eV which prolongs the lifetime of the photo-induced electrons. Subsequently, the use of T-LDH/PbI2 NC improves the photoelectrocatalytic (PEC) H2 production rate. T-LDH/PbI2 NC shows a catalytic H2 production rate of 107.53 mmol h−1 cm−2 with IPCE% of 83.8% for 307 nm and 67.3% for 508 nm. The ABPE% reaches its supreme of 4.24% for − 0.58 V and 5.41% for − 0.97 V, these values are the highest values yet for LDH-based photocatalysts. The influences of the operating temperature and monochromatic illumination on the PEC performance were studied. Also, the electrochemical surface area, thermodynamic parameters, and Tafe slopes are calculated to label the hydrogen evolution mechanism. Moreover, the stability and reusability of the T-LDH/PbI2 NC photoelectrode were investigated. This work not only illustrated a simplistic and accessible way to produce a new category of highly efficient photocatalysts compared to the previously reported LDH-based PEC catalysts but also demonstrates a new point of view for improving PEC performance towards industrial water splitting under sunlight irradiation.
format	article
author	Fatma Mohamed Nour Bhnsawy Mohamed Shaban
author_facet	Fatma Mohamed Nour Bhnsawy Mohamed Shaban
author_sort	Fatma Mohamed
title	Reusability and stability of a novel ternary (Co–Cd–Fe)-LDH/PbI2 photoelectrocatalytst for solar hydrogen production
title_short	Reusability and stability of a novel ternary (Co–Cd–Fe)-LDH/PbI2 photoelectrocatalytst for solar hydrogen production
title_full	Reusability and stability of a novel ternary (Co–Cd–Fe)-LDH/PbI2 photoelectrocatalytst for solar hydrogen production
title_fullStr	Reusability and stability of a novel ternary (Co–Cd–Fe)-LDH/PbI2 photoelectrocatalytst for solar hydrogen production
title_full_unstemmed	Reusability and stability of a novel ternary (Co–Cd–Fe)-LDH/PbI2 photoelectrocatalytst for solar hydrogen production
title_sort	reusability and stability of a novel ternary (co–cd–fe)-ldh/pbi2 photoelectrocatalytst for solar hydrogen production
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/d4732c631cff44ef86efadfe15dba85e
work_keys_str_mv	AT fatmamohamed reusabilityandstabilityofanovelternarycocdfeldhpbi2photoelectrocatalytstforsolarhydrogenproduction AT nourbhnsawy reusabilityandstabilityofanovelternarycocdfeldhpbi2photoelectrocatalytstforsolarhydrogenproduction AT mohamedshaban reusabilityandstabilityofanovelternarycocdfeldhpbi2photoelectrocatalytstforsolarhydrogenproduction
_version_	1718385539982295040

Reusability and stability of a novel ternary (Co–Cd–Fe)-LDH/PbI2 photoelectrocatalytst for solar hydrogen production

Ejemplares similares