Photocatalytic degradation of dyes by CdS microspheres under near UV and blue LED radiation

Eveliina Repo; Selvaraj Rengaraj; Susanna Pulkka; Emmanuelle Castangnoli; Sami Suihkonen; Markku Sopanen; Mika Sillanpää

doi:10.1016/j.seppur.2013.10.008

Photocatalytic degradation of dyes by CdS microspheres under near UV and blue LED radiation

Eveliina Repo^*, Selvaraj Rengaraj, Susanna Pulkka, Emmanuelle Castangnoli, Sami Suihkonen, Markku Sopanen, Mika Sillanpää

^*Corresponding author for this work

Chemistry

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

61 Citations (Scopus)

Abstract

Nanostructured CdS microspheres were prepared by hydrothermal synthesis and used as photocatalyst in the degradation of dyes under near UV and blue LED radiation. Nearly complete degradation of methylene blue, phenol red and methyl red was achieved in 3 h. Catalytic performance of the microspheres remained unchanged during five recycling steps. Different modification methods were tested to prevent photocorrosion of the CdS particles. Using glucose as protecting agent gave the most promising results. Furthermore, photocatalysis under LED radiation tested in this study showed quite good energy efficiency, which makes this method economically appealing.

Original language	English
Pages (from-to)	206-214
Number of pages	9
Journal	Separation and Purification Technology
Volume	120
DOIs	https://doi.org/10.1016/j.seppur.2013.10.008
Publication status	Published - 2013

Keywords

Cadmium sulfide
Dye
LED
Photocatalysis
Water treatment

ASJC Scopus subject areas

Analytical Chemistry
Filtration and Separation

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10.1016/j.seppur.2013.10.008

Cite this

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title = "Photocatalytic degradation of dyes by CdS microspheres under near UV and blue LED radiation",

abstract = "Nanostructured CdS microspheres were prepared by hydrothermal synthesis and used as photocatalyst in the degradation of dyes under near UV and blue LED radiation. Nearly complete degradation of methylene blue, phenol red and methyl red was achieved in 3 h. Catalytic performance of the microspheres remained unchanged during five recycling steps. Different modification methods were tested to prevent photocorrosion of the CdS particles. Using glucose as protecting agent gave the most promising results. Furthermore, photocatalysis under LED radiation tested in this study showed quite good energy efficiency, which makes this method economically appealing.",

keywords = "Cadmium sulfide, Dye, LED, Photocatalysis, Water treatment",

author = "Eveliina Repo and Selvaraj Rengaraj and Susanna Pulkka and Emmanuelle Castangnoli and Sami Suihkonen and Markku Sopanen and Mika Sillanp{\"a}{\"a}",

note = "Funding Information: The authors are grateful to the Finnish Funding Agency for Technology and Innovation (TEKES) for financial support.",

year = "2013",

doi = "10.1016/j.seppur.2013.10.008",

language = "English",

volume = "120",

pages = "206--214",

journal = "Separations Technology",

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TY - JOUR

T1 - Photocatalytic degradation of dyes by CdS microspheres under near UV and blue LED radiation

AU - Repo, Eveliina

AU - Rengaraj, Selvaraj

AU - Pulkka, Susanna

AU - Castangnoli, Emmanuelle

AU - Suihkonen, Sami

AU - Sopanen, Markku

AU - Sillanpää, Mika

N1 - Funding Information: The authors are grateful to the Finnish Funding Agency for Technology and Innovation (TEKES) for financial support.

PY - 2013

Y1 - 2013

N2 - Nanostructured CdS microspheres were prepared by hydrothermal synthesis and used as photocatalyst in the degradation of dyes under near UV and blue LED radiation. Nearly complete degradation of methylene blue, phenol red and methyl red was achieved in 3 h. Catalytic performance of the microspheres remained unchanged during five recycling steps. Different modification methods were tested to prevent photocorrosion of the CdS particles. Using glucose as protecting agent gave the most promising results. Furthermore, photocatalysis under LED radiation tested in this study showed quite good energy efficiency, which makes this method economically appealing.

AB - Nanostructured CdS microspheres were prepared by hydrothermal synthesis and used as photocatalyst in the degradation of dyes under near UV and blue LED radiation. Nearly complete degradation of methylene blue, phenol red and methyl red was achieved in 3 h. Catalytic performance of the microspheres remained unchanged during five recycling steps. Different modification methods were tested to prevent photocorrosion of the CdS particles. Using glucose as protecting agent gave the most promising results. Furthermore, photocatalysis under LED radiation tested in this study showed quite good energy efficiency, which makes this method economically appealing.

KW - Cadmium sulfide

KW - Dye

KW - LED

KW - Photocatalysis

KW - Water treatment

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DO - 10.1016/j.seppur.2013.10.008

M3 - Article

AN - SCOPUS:84887054636

SN - 1383-5866

VL - 120

SP - 206

EP - 214

JO - Separations Technology

JF - Separations Technology

ER -

Photocatalytic degradation of dyes by CdS microspheres under near UV and blue LED radiation

Abstract

Keywords

ASJC Scopus subject areas

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