Platinum nanoparticles confined within TiO2 nanotube matrix for enhanced catalytic reduction of azure b dye

Krishnamoorthy Shanmugaraj; Ramalinga Viswanathan Mangalaraja; Cristian H. Campos; Dinesh Pratap Singh; R. Udayabhaskar; Santiago Bedoya; Radhamanohar Aepuru

doi:10.1016/j.matlet.2022.133208

Platinum nanoparticles confined within TiO₂ nanotube matrix for enhanced catalytic reduction of azure b dye

Krishnamoorthy Shanmugaraj, Ramalinga Viswanathan Mangalaraja, Cristian H. Campos, Dinesh Pratap Singh, R. Udayabhaskar, Santiago Bedoya, Radhamanohar Aepuru

Producción científica: Contribución a una revista › Artículo › revisión exhaustiva

3 Citas (Scopus)

Resumen

In this work, we report the synthesis of TiO₂ nanotubes encapsulated platinum nanoparticles (PtNPs-TiO₂NTs) as a highly efficient catalyst for the catalytic reduction of azure B (AZB) dye in the sodium borohydride (NaBH₄) medium. The encapsulation of PtNPs (particle size ∼ 2–3 nm) inside the TiO₂NTs was confirmed by HR-TEM analysis. The as-prepared PtNPs-TiO₂NTs exhibit higher conversion efficiency than 99 % with a pseudo-first order rate constant of 2.6 × 10^-3 s⁻¹. Owing to the confinement effect of PtNPs inside the TiO₂NTs, the synthesized catalyst shows the superior operative stability even after 8 consecutive recycles without any loss in its activity. This work opens up new avenue for the designing of confined catalyst for various industrial catalytic reactions.

Idioma original	Inglés
Número de artículo	133208
Publicación	Materials Letters
Volumen	330
DOI	https://doi.org/10.1016/j.matlet.2022.133208
Estado	Publicada - 1 ene. 2023
Publicado de forma externa	Sí

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@article{b55b55cfa4a84f51bb53a8fdf5899c16,

title = "Platinum nanoparticles confined within TiO2 nanotube matrix for enhanced catalytic reduction of azure b dye",

abstract = "In this work, we report the synthesis of TiO2 nanotubes encapsulated platinum nanoparticles (PtNPs-TiO2NTs) as a highly efficient catalyst for the catalytic reduction of azure B (AZB) dye in the sodium borohydride (NaBH4) medium. The encapsulation of PtNPs (particle size ∼ 2–3 nm) inside the TiO2NTs was confirmed by HR-TEM analysis. The as-prepared PtNPs-TiO2NTs exhibit higher conversion efficiency than 99 % with a pseudo-first order rate constant of 2.6 × 10-3 s−1. Owing to the confinement effect of PtNPs inside the TiO2NTs, the synthesized catalyst shows the superior operative stability even after 8 consecutive recycles without any loss in its activity. This work opens up new avenue for the designing of confined catalyst for various industrial catalytic reactions.",

keywords = "Azure B, Catalytic reduction, Pseudo-first order reaction, PtNPs-TiONTs",

author = "Krishnamoorthy Shanmugaraj and {Viswanathan Mangalaraja}, Ramalinga and Campos, {Cristian H.} and {Pratap Singh}, Dinesh and R. Udayabhaskar and Santiago Bedoya and Radhamanohar Aepuru",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

year = "2023",

month = jan,

day = "1",

doi = "10.1016/j.matlet.2022.133208",

language = "English",

volume = "330",

journal = "Materials Letters",

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TY - JOUR

T1 - Platinum nanoparticles confined within TiO2 nanotube matrix for enhanced catalytic reduction of azure b dye

AU - Shanmugaraj, Krishnamoorthy

AU - Viswanathan Mangalaraja, Ramalinga

AU - Campos, Cristian H.

AU - Pratap Singh, Dinesh

AU - Udayabhaskar, R.

AU - Bedoya, Santiago

AU - Aepuru, Radhamanohar

PY - 2023/1/1

Y1 - 2023/1/1

N2 - In this work, we report the synthesis of TiO2 nanotubes encapsulated platinum nanoparticles (PtNPs-TiO2NTs) as a highly efficient catalyst for the catalytic reduction of azure B (AZB) dye in the sodium borohydride (NaBH4) medium. The encapsulation of PtNPs (particle size ∼ 2–3 nm) inside the TiO2NTs was confirmed by HR-TEM analysis. The as-prepared PtNPs-TiO2NTs exhibit higher conversion efficiency than 99 % with a pseudo-first order rate constant of 2.6 × 10-3 s−1. Owing to the confinement effect of PtNPs inside the TiO2NTs, the synthesized catalyst shows the superior operative stability even after 8 consecutive recycles without any loss in its activity. This work opens up new avenue for the designing of confined catalyst for various industrial catalytic reactions.

AB - In this work, we report the synthesis of TiO2 nanotubes encapsulated platinum nanoparticles (PtNPs-TiO2NTs) as a highly efficient catalyst for the catalytic reduction of azure B (AZB) dye in the sodium borohydride (NaBH4) medium. The encapsulation of PtNPs (particle size ∼ 2–3 nm) inside the TiO2NTs was confirmed by HR-TEM analysis. The as-prepared PtNPs-TiO2NTs exhibit higher conversion efficiency than 99 % with a pseudo-first order rate constant of 2.6 × 10-3 s−1. Owing to the confinement effect of PtNPs inside the TiO2NTs, the synthesized catalyst shows the superior operative stability even after 8 consecutive recycles without any loss in its activity. This work opens up new avenue for the designing of confined catalyst for various industrial catalytic reactions.

KW - Azure B

KW - Catalytic reduction

KW - Pseudo-first order reaction

KW - PtNPs-TiONTs

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U2 - 10.1016/j.matlet.2022.133208

DO - 10.1016/j.matlet.2022.133208

M3 - Article

AN - SCOPUS:85138468366

SN - 0167-577X

VL - 330

JO - Materials Letters

JF - Materials Letters

M1 - 133208

ER -

Platinum nanoparticles confined within TiO2 nanotube matrix for enhanced catalytic reduction of azure b dye

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Platinum nanoparticles confined within TiO₂ nanotube matrix for enhanced catalytic reduction of azure b dye