Enhanced visible-light photocatalytic decomposition of malachite green over squaraines sensitized SnIn4S8 composites and effect of dye structure on photocatalytic behaviors

Enhanced visible-light photocatalytic decomposition of malachite green over squaraines sensitized... A series of indole squaraines (SQs) sensitized SnIn4S8 particles with the mass ratio of 1:10 were fabricated by a facile ultrasonic method. The obtained samples have been characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, diffuse reflection spectroscopy, Fourier transforms infrared spectroscopy and Raman spectroscopy. The as-prepared squaraines/SnIn4S8 composites exhibited the excellent thermal stability. The efficient charge-transfer ability of squaraines was calculated by Gaussian 98 at the B3YP/6-311 + G(d,p) level. The highest occupied molecular orbital and the lowest unoccupied molecular orbital states had been obtained to match the band gap of pure SnIn4S8. The malachite green (MG) was used as the degradation dye to measure the photocatalytic performance of different SQs sensitized SnIn4S8 composites. The results showed that the sensitized composites exhibited significantly enhanced photocatalytic activities. Among them, The BSQ/SnIn4S8 composites showed the best photocatalytic performance whose degradation rate reached 97.91% under 40 min visible-light irradiation. The kapp value of BSQ/SnIn4S8 composites (0.0962 min−1) was 4.20 times larger than that of bare SnIn4S8 (0.0229 min−1). The kapp value of ISQ/SnIn4S8, MSQ/SnIn4S8, FSQ/SnIn4S8 and CSQ/SnIn4S8 was evaluated to be 0.0328, 0.0358, 0.0526 and 0.0192 min−1, respectively. According to the fluorescence spectra, BSQ/SnIn4S8 possessed the highest fluorescence quantum yield of 0.4621 within all nanocomposites. Furthermore, the photocatalytic mechanism of squaraines/SnIn4S8 composites was also proposed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Materials Science: Materials in Electronics Springer Journals

Enhanced visible-light photocatalytic decomposition of malachite green over squaraines sensitized SnIn4S8 composites and effect of dye structure on photocatalytic behaviors

Loading next page...
 
/lp/springer_journal/enhanced-visible-light-photocatalytic-decomposition-of-malachite-green-gd3E16QdCD
Publisher
Springer US
Copyright
Copyright © 2018 by Springer Science+Business Media, LLC, part of Springer Nature
Subject
Materials Science; Optical and Electronic Materials; Characterization and Evaluation of Materials
ISSN
0957-4522
eISSN
1573-482X
D.O.I.
10.1007/s10854-018-9405-5
Publisher site
See Article on Publisher Site

Abstract

A series of indole squaraines (SQs) sensitized SnIn4S8 particles with the mass ratio of 1:10 were fabricated by a facile ultrasonic method. The obtained samples have been characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, diffuse reflection spectroscopy, Fourier transforms infrared spectroscopy and Raman spectroscopy. The as-prepared squaraines/SnIn4S8 composites exhibited the excellent thermal stability. The efficient charge-transfer ability of squaraines was calculated by Gaussian 98 at the B3YP/6-311 + G(d,p) level. The highest occupied molecular orbital and the lowest unoccupied molecular orbital states had been obtained to match the band gap of pure SnIn4S8. The malachite green (MG) was used as the degradation dye to measure the photocatalytic performance of different SQs sensitized SnIn4S8 composites. The results showed that the sensitized composites exhibited significantly enhanced photocatalytic activities. Among them, The BSQ/SnIn4S8 composites showed the best photocatalytic performance whose degradation rate reached 97.91% under 40 min visible-light irradiation. The kapp value of BSQ/SnIn4S8 composites (0.0962 min−1) was 4.20 times larger than that of bare SnIn4S8 (0.0229 min−1). The kapp value of ISQ/SnIn4S8, MSQ/SnIn4S8, FSQ/SnIn4S8 and CSQ/SnIn4S8 was evaluated to be 0.0328, 0.0358, 0.0526 and 0.0192 min−1, respectively. According to the fluorescence spectra, BSQ/SnIn4S8 possessed the highest fluorescence quantum yield of 0.4621 within all nanocomposites. Furthermore, the photocatalytic mechanism of squaraines/SnIn4S8 composites was also proposed.

Journal

Journal of Materials Science: Materials in ElectronicsSpringer Journals

Published: Jun 4, 2018

References

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create lists to
organize your research

Export lists, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off