Shape-dependent reactivity and chemoselectivity of nanogold towards nitrophenol reduction in water

Sodiq Adeyeye Nafiu; Md Abdul Aziz; M. Nasiruzzaman Shaikh

doi:10.1016/j.jorganchem.2020.121361

Shape-dependent reactivity and chemoselectivity of nanogold towards nitrophenol reduction in water

Sodiq Adeyeye Nafiu
, Md Abdul Aziz
, M. Nasiruzzaman Shaikh^*

^*Corresponding author for this work

Interdisciplinary Research Center for Hydrogen Technologies and Carbon Management

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

3 Scopus citations

Abstract

Although the catalytic activity of nano-gold surfaces for the reduction of nitro compounds has been known, the effect of their shape has been rarely evaluated. Here, the synthesis, characterization, and application of both gold nanoworms (GNW) and gold nanospheres (GNS) are described. Both GNW and GNS were characterized using SEM, TEM, UV–Vis, FTIR, and XPS spectroscopy. The catalytic efficiency of GNW with an average dimensions of 2 × 250 nm (D × L) towards the hydrogenation of nitrophenol, a pollutant present in industrial wastewater, is higher (TOF 3675 h⁻¹) than that of spherical GNS (10 ± 1 nm), for which TOF is 1838 h⁻¹ in water using NaBH₄ as the reductant. The selectivity of 4-aminophenol is 100% for both GNS and GNW.

Original language	English
Article number	121361
Journal	Journal of Organometallic Chemistry
Volume	922
DOIs	https://doi.org/10.1016/j.jorganchem.2020.121361
State	Published - 1 Sep 2020

Bibliographical note

Publisher Copyright:
© 2020 Elsevier B.V.

Keywords

Azoxyarene
Chemoselectivity
Gold nanoparticles
Nitrophenol
Turn over frequency

ASJC Scopus subject areas

Biochemistry
Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry
Materials Chemistry

UN SDGs

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

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10.1016/j.jorganchem.2020.121361

Cite this

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title = "Shape-dependent reactivity and chemoselectivity of nanogold towards nitrophenol reduction in water",

abstract = "Although the catalytic activity of nano-gold surfaces for the reduction of nitro compounds has been known, the effect of their shape has been rarely evaluated. Here, the synthesis, characterization, and application of both gold nanoworms (GNW) and gold nanospheres (GNS) are described. Both GNW and GNS were characterized using SEM, TEM, UV–Vis, FTIR, and XPS spectroscopy. The catalytic efficiency of GNW with an average dimensions of 2 × 250 nm (D × L) towards the hydrogenation of nitrophenol, a pollutant present in industrial wastewater, is higher (TOF 3675 h−1) than that of spherical GNS (10 ± 1 nm), for which TOF is 1838 h−1 in water using NaBH4 as the reductant. The selectivity of 4-aminophenol is 100\% for both GNS and GNW.",

keywords = "Azoxyarene, Chemoselectivity, Gold nanoparticles, Nitrophenol, Turn over frequency",

author = "Nafiu, \{Sodiq Adeyeye\} and Aziz, \{Md Abdul\} and Shaikh, \{M. Nasiruzzaman\}",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",

year = "2020",

month = sep,

day = "1",

doi = "10.1016/j.jorganchem.2020.121361",

language = "English",

volume = "922",

journal = "Journal of Organometallic Chemistry",

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}

TY - JOUR

T1 - Shape-dependent reactivity and chemoselectivity of nanogold towards nitrophenol reduction in water

AU - Nafiu, Sodiq Adeyeye

AU - Aziz, Md Abdul

AU - Shaikh, M. Nasiruzzaman

PY - 2020/9/1

Y1 - 2020/9/1

N2 - Although the catalytic activity of nano-gold surfaces for the reduction of nitro compounds has been known, the effect of their shape has been rarely evaluated. Here, the synthesis, characterization, and application of both gold nanoworms (GNW) and gold nanospheres (GNS) are described. Both GNW and GNS were characterized using SEM, TEM, UV–Vis, FTIR, and XPS spectroscopy. The catalytic efficiency of GNW with an average dimensions of 2 × 250 nm (D × L) towards the hydrogenation of nitrophenol, a pollutant present in industrial wastewater, is higher (TOF 3675 h−1) than that of spherical GNS (10 ± 1 nm), for which TOF is 1838 h−1 in water using NaBH4 as the reductant. The selectivity of 4-aminophenol is 100% for both GNS and GNW.

AB - Although the catalytic activity of nano-gold surfaces for the reduction of nitro compounds has been known, the effect of their shape has been rarely evaluated. Here, the synthesis, characterization, and application of both gold nanoworms (GNW) and gold nanospheres (GNS) are described. Both GNW and GNS were characterized using SEM, TEM, UV–Vis, FTIR, and XPS spectroscopy. The catalytic efficiency of GNW with an average dimensions of 2 × 250 nm (D × L) towards the hydrogenation of nitrophenol, a pollutant present in industrial wastewater, is higher (TOF 3675 h−1) than that of spherical GNS (10 ± 1 nm), for which TOF is 1838 h−1 in water using NaBH4 as the reductant. The selectivity of 4-aminophenol is 100% for both GNS and GNW.

KW - Azoxyarene

KW - Chemoselectivity

KW - Gold nanoparticles

KW - Nitrophenol

KW - Turn over frequency

UR - https://www.scopus.com/pages/publications/85087395218

U2 - 10.1016/j.jorganchem.2020.121361

DO - 10.1016/j.jorganchem.2020.121361

M3 - Article

AN - SCOPUS:85087395218

SN - 0022-328X

VL - 922

JO - Journal of Organometallic Chemistry

JF - Journal of Organometallic Chemistry

M1 - 121361

ER -

Shape-dependent reactivity and chemoselectivity of nanogold towards nitrophenol reduction in water

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

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