Novel hetero-bimetallic coordination polymer as a single source of highly dispersed Cu/Ni nanoparticles for efficient photocatalytic water splitting

Shaista Ibrahim, Imran Majeed, Yuhong Qian, Azhar Iqbal, Dan Zhao, David R. Turner, Muhammad Arif Nadeem

Research output: Contribution to journalArticleResearchpeer-review

Abstract

A new strategy for depositing highly dispersed Cu and Ni nanoparticles on the surface of TiO2 from a single source is demonstrated for photocatalytic hydrogen production. We used a newly synthesized cyanide-bridged hetero-bimetallic coordination polymer [{CuII(4,4′-dipy)2}{Ni(CN)4}]n·0.7(C2H6O2).1.6(H2O) (CP-1) (4,4′-dipy = 1,3-di(4-pyridyl)propane) as a single-source precursor of Cu-Ni nanoparticles. The structure of CP-1 was established by single-crystal X-ray diffraction analysis; CP-1 crystallizes in the monoclinic space group C2/c with β = 111.67(3)°. CP-1/TiO2 composites containing different weight percentages of CP-1 were achieved by hydrolyzing titanium isopropoxide in the presence of CP-1. Highly dispersed Cu and Ni nanoparticles were deposited on TiO2 by the calcination of the CP-1/TiO2 composites at different temperatures (420 °C, 470 °C and 520 °C) in air followed by reduction in H2/Ar atmosphere at 470 °C for 2 h. XRD, DRS/UV-Vis, TEM, Cu/Ni 2p XPS, and photoluminescence spectroscopy demonstrated the presence of CuO/Cu0 and NiO/Ni0 as active co-catalysts on the surface of TiO2. The 1 wt% Cu-Ni/TiO2-470 photocatalyst showed the maximum H2 production activity of 8.5 mmol h-1 g-1 in a glycerol/water mixture (20 vol%). The results are anticipated to direct the future development of efficient, low-cost and noble metal-free semiconductor photocatalysts for solar H2 production.

Original languageEnglish
Pages (from-to)1816-1827
Number of pages12
JournalInorganic Chemistry Frontiers
Volume5
Issue number8
DOIs
Publication statusPublished - 1 Aug 2018

Cite this

Ibrahim, Shaista ; Majeed, Imran ; Qian, Yuhong ; Iqbal, Azhar ; Zhao, Dan ; Turner, David R. ; Nadeem, Muhammad Arif. / Novel hetero-bimetallic coordination polymer as a single source of highly dispersed Cu/Ni nanoparticles for efficient photocatalytic water splitting. In: Inorganic Chemistry Frontiers. 2018 ; Vol. 5, No. 8. pp. 1816-1827.
@article{ace88392fd7e447f811c6e1f9014223b,
title = "Novel hetero-bimetallic coordination polymer as a single source of highly dispersed Cu/Ni nanoparticles for efficient photocatalytic water splitting",
abstract = "A new strategy for depositing highly dispersed Cu and Ni nanoparticles on the surface of TiO2 from a single source is demonstrated for photocatalytic hydrogen production. We used a newly synthesized cyanide-bridged hetero-bimetallic coordination polymer [{CuII(4,4′-dipy)2}{Ni(CN)4}]n·0.7(C2H6O2).1.6(H2O) (CP-1) (4,4′-dipy = 1,3-di(4-pyridyl)propane) as a single-source precursor of Cu-Ni nanoparticles. The structure of CP-1 was established by single-crystal X-ray diffraction analysis; CP-1 crystallizes in the monoclinic space group C2/c with β = 111.67(3)°. CP-1/TiO2 composites containing different weight percentages of CP-1 were achieved by hydrolyzing titanium isopropoxide in the presence of CP-1. Highly dispersed Cu and Ni nanoparticles were deposited on TiO2 by the calcination of the CP-1/TiO2 composites at different temperatures (420 °C, 470 °C and 520 °C) in air followed by reduction in H2/Ar atmosphere at 470 °C for 2 h. XRD, DRS/UV-Vis, TEM, Cu/Ni 2p XPS, and photoluminescence spectroscopy demonstrated the presence of CuO/Cu0 and NiO/Ni0 as active co-catalysts on the surface of TiO2. The 1 wt{\%} Cu-Ni/TiO2-470 photocatalyst showed the maximum H2 production activity of 8.5 mmol h-1 g-1 in a glycerol/water mixture (20 vol{\%}). The results are anticipated to direct the future development of efficient, low-cost and noble metal-free semiconductor photocatalysts for solar H2 production.",
author = "Shaista Ibrahim and Imran Majeed and Yuhong Qian and Azhar Iqbal and Dan Zhao and Turner, {David R.} and Nadeem, {Muhammad Arif}",
year = "2018",
month = "8",
day = "1",
doi = "10.1039/c8qi00355f",
language = "English",
volume = "5",
pages = "1816--1827",
journal = "Inorganic Chemistry Frontiers: an international journal of inorganic chemistry",
issn = "2052-1545",
number = "8",

}

Novel hetero-bimetallic coordination polymer as a single source of highly dispersed Cu/Ni nanoparticles for efficient photocatalytic water splitting. / Ibrahim, Shaista; Majeed, Imran; Qian, Yuhong; Iqbal, Azhar; Zhao, Dan; Turner, David R.; Nadeem, Muhammad Arif.

In: Inorganic Chemistry Frontiers, Vol. 5, No. 8, 01.08.2018, p. 1816-1827.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Novel hetero-bimetallic coordination polymer as a single source of highly dispersed Cu/Ni nanoparticles for efficient photocatalytic water splitting

AU - Ibrahim, Shaista

AU - Majeed, Imran

AU - Qian, Yuhong

AU - Iqbal, Azhar

AU - Zhao, Dan

AU - Turner, David R.

AU - Nadeem, Muhammad Arif

PY - 2018/8/1

Y1 - 2018/8/1

N2 - A new strategy for depositing highly dispersed Cu and Ni nanoparticles on the surface of TiO2 from a single source is demonstrated for photocatalytic hydrogen production. We used a newly synthesized cyanide-bridged hetero-bimetallic coordination polymer [{CuII(4,4′-dipy)2}{Ni(CN)4}]n·0.7(C2H6O2).1.6(H2O) (CP-1) (4,4′-dipy = 1,3-di(4-pyridyl)propane) as a single-source precursor of Cu-Ni nanoparticles. The structure of CP-1 was established by single-crystal X-ray diffraction analysis; CP-1 crystallizes in the monoclinic space group C2/c with β = 111.67(3)°. CP-1/TiO2 composites containing different weight percentages of CP-1 were achieved by hydrolyzing titanium isopropoxide in the presence of CP-1. Highly dispersed Cu and Ni nanoparticles were deposited on TiO2 by the calcination of the CP-1/TiO2 composites at different temperatures (420 °C, 470 °C and 520 °C) in air followed by reduction in H2/Ar atmosphere at 470 °C for 2 h. XRD, DRS/UV-Vis, TEM, Cu/Ni 2p XPS, and photoluminescence spectroscopy demonstrated the presence of CuO/Cu0 and NiO/Ni0 as active co-catalysts on the surface of TiO2. The 1 wt% Cu-Ni/TiO2-470 photocatalyst showed the maximum H2 production activity of 8.5 mmol h-1 g-1 in a glycerol/water mixture (20 vol%). The results are anticipated to direct the future development of efficient, low-cost and noble metal-free semiconductor photocatalysts for solar H2 production.

AB - A new strategy for depositing highly dispersed Cu and Ni nanoparticles on the surface of TiO2 from a single source is demonstrated for photocatalytic hydrogen production. We used a newly synthesized cyanide-bridged hetero-bimetallic coordination polymer [{CuII(4,4′-dipy)2}{Ni(CN)4}]n·0.7(C2H6O2).1.6(H2O) (CP-1) (4,4′-dipy = 1,3-di(4-pyridyl)propane) as a single-source precursor of Cu-Ni nanoparticles. The structure of CP-1 was established by single-crystal X-ray diffraction analysis; CP-1 crystallizes in the monoclinic space group C2/c with β = 111.67(3)°. CP-1/TiO2 composites containing different weight percentages of CP-1 were achieved by hydrolyzing titanium isopropoxide in the presence of CP-1. Highly dispersed Cu and Ni nanoparticles were deposited on TiO2 by the calcination of the CP-1/TiO2 composites at different temperatures (420 °C, 470 °C and 520 °C) in air followed by reduction in H2/Ar atmosphere at 470 °C for 2 h. XRD, DRS/UV-Vis, TEM, Cu/Ni 2p XPS, and photoluminescence spectroscopy demonstrated the presence of CuO/Cu0 and NiO/Ni0 as active co-catalysts on the surface of TiO2. The 1 wt% Cu-Ni/TiO2-470 photocatalyst showed the maximum H2 production activity of 8.5 mmol h-1 g-1 in a glycerol/water mixture (20 vol%). The results are anticipated to direct the future development of efficient, low-cost and noble metal-free semiconductor photocatalysts for solar H2 production.

UR - http://www.scopus.com/inward/record.url?scp=85051235561&partnerID=8YFLogxK

U2 - 10.1039/c8qi00355f

DO - 10.1039/c8qi00355f

M3 - Article

VL - 5

SP - 1816

EP - 1827

JO - Inorganic Chemistry Frontiers: an international journal of inorganic chemistry

JF - Inorganic Chemistry Frontiers: an international journal of inorganic chemistry

SN - 2052-1545

IS - 8

ER -