Cargando…

Thermo-Responsive ZnPc-g-TiO(2)-g-PNIPAM Photocatalysts Sensitized with Phthalocyanines for Water Purification under Visible Light

A novel thermo-responsive 2,9(10),16(17),23(24)-tetrakis[(3-carboxyacrylamide) phthalocyaninato] zinc (ZnPc)-g-TiO(2)-g-poly(N-isopropylacrylamide) (PNIPAM) photocatalyst modified with phthalocyanines was prepared. The photocatalyst exhibited thermo-responsive properties due to the introduction of P...

Descripción completa

Detalles Bibliográficos
Autores principales: Mao, Bingxin, Liu, Cong, Cui, Xu, Li, Yanhui, Duan, Qian
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9143362/
https://www.ncbi.nlm.nih.gov/pubmed/35630806
http://dx.doi.org/10.3390/molecules27103330
_version_ 1784715787478499328
author Mao, Bingxin
Liu, Cong
Cui, Xu
Li, Yanhui
Duan, Qian
author_facet Mao, Bingxin
Liu, Cong
Cui, Xu
Li, Yanhui
Duan, Qian
author_sort Mao, Bingxin
collection PubMed
description A novel thermo-responsive 2,9(10),16(17),23(24)-tetrakis[(3-carboxyacrylamide) phthalocyaninato] zinc (ZnPc)-g-TiO(2)-g-poly(N-isopropylacrylamide) (PNIPAM) photocatalyst modified with phthalocyanines was prepared. The photocatalyst exhibited thermo-responsive properties due to the introduction of PNIPAM, which performed recovery for reuse above the lower critical solution temperature (LCST, about 26 °C). ZnPc-g-TiO(2)-g-PNIPAM effectively expanded the light response range to the visible light region and inhibited the recombination of electron–hole pairs, which enhanced the performance of the photocatalyst. As expected, ZnPc-g-TiO(2)-g-PNIPAM (0.3 g/L) exhibited excellent photocatalytic performance for the removal of Rhodamine B (RhB, 1.0 × 10(−5) mol/L) and methylene blue (MB, 1.0 × 10(−5) mol/L) under visible light, which reached 97.2% and 88.6% at 20 °C within 40 min, respectively. Furthermore, the influence of temperature upon photocatalytic performance was also investigated. When the temperature increased from 20 °C to 45 °C, the removal of RhB decreased by approximately 53.8%. The stability of the photocatalyst demonstrated that the photocatalytic activity was still above 80% for the removal of RhB after 3 cycles. Above all, this work provided an intelligent thermally responsive photocatalyst based on phthalocyanine for water purification under visible light.
format Online
Article
Text
id pubmed-9143362
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-91433622022-05-29 Thermo-Responsive ZnPc-g-TiO(2)-g-PNIPAM Photocatalysts Sensitized with Phthalocyanines for Water Purification under Visible Light Mao, Bingxin Liu, Cong Cui, Xu Li, Yanhui Duan, Qian Molecules Article A novel thermo-responsive 2,9(10),16(17),23(24)-tetrakis[(3-carboxyacrylamide) phthalocyaninato] zinc (ZnPc)-g-TiO(2)-g-poly(N-isopropylacrylamide) (PNIPAM) photocatalyst modified with phthalocyanines was prepared. The photocatalyst exhibited thermo-responsive properties due to the introduction of PNIPAM, which performed recovery for reuse above the lower critical solution temperature (LCST, about 26 °C). ZnPc-g-TiO(2)-g-PNIPAM effectively expanded the light response range to the visible light region and inhibited the recombination of electron–hole pairs, which enhanced the performance of the photocatalyst. As expected, ZnPc-g-TiO(2)-g-PNIPAM (0.3 g/L) exhibited excellent photocatalytic performance for the removal of Rhodamine B (RhB, 1.0 × 10(−5) mol/L) and methylene blue (MB, 1.0 × 10(−5) mol/L) under visible light, which reached 97.2% and 88.6% at 20 °C within 40 min, respectively. Furthermore, the influence of temperature upon photocatalytic performance was also investigated. When the temperature increased from 20 °C to 45 °C, the removal of RhB decreased by approximately 53.8%. The stability of the photocatalyst demonstrated that the photocatalytic activity was still above 80% for the removal of RhB after 3 cycles. Above all, this work provided an intelligent thermally responsive photocatalyst based on phthalocyanine for water purification under visible light. MDPI 2022-05-22 /pmc/articles/PMC9143362/ /pubmed/35630806 http://dx.doi.org/10.3390/molecules27103330 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Mao, Bingxin
Liu, Cong
Cui, Xu
Li, Yanhui
Duan, Qian
Thermo-Responsive ZnPc-g-TiO(2)-g-PNIPAM Photocatalysts Sensitized with Phthalocyanines for Water Purification under Visible Light
title Thermo-Responsive ZnPc-g-TiO(2)-g-PNIPAM Photocatalysts Sensitized with Phthalocyanines for Water Purification under Visible Light
title_full Thermo-Responsive ZnPc-g-TiO(2)-g-PNIPAM Photocatalysts Sensitized with Phthalocyanines for Water Purification under Visible Light
title_fullStr Thermo-Responsive ZnPc-g-TiO(2)-g-PNIPAM Photocatalysts Sensitized with Phthalocyanines for Water Purification under Visible Light
title_full_unstemmed Thermo-Responsive ZnPc-g-TiO(2)-g-PNIPAM Photocatalysts Sensitized with Phthalocyanines for Water Purification under Visible Light
title_short Thermo-Responsive ZnPc-g-TiO(2)-g-PNIPAM Photocatalysts Sensitized with Phthalocyanines for Water Purification under Visible Light
title_sort thermo-responsive znpc-g-tio(2)-g-pnipam photocatalysts sensitized with phthalocyanines for water purification under visible light
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9143362/
https://www.ncbi.nlm.nih.gov/pubmed/35630806
http://dx.doi.org/10.3390/molecules27103330
work_keys_str_mv AT maobingxin thermoresponsiveznpcgtio2gpnipamphotocatalystssensitizedwithphthalocyaninesforwaterpurificationundervisiblelight
AT liucong thermoresponsiveznpcgtio2gpnipamphotocatalystssensitizedwithphthalocyaninesforwaterpurificationundervisiblelight
AT cuixu thermoresponsiveznpcgtio2gpnipamphotocatalystssensitizedwithphthalocyaninesforwaterpurificationundervisiblelight
AT liyanhui thermoresponsiveznpcgtio2gpnipamphotocatalystssensitizedwithphthalocyaninesforwaterpurificationundervisiblelight
AT duanqian thermoresponsiveznpcgtio2gpnipamphotocatalystssensitizedwithphthalocyaninesforwaterpurificationundervisiblelight