PMID- 33805116
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20240331
IS  - 2073-4360 (Electronic)
IS  - 2073-4360 (Linking)
VI  - 13
IP  - 7
DP  - 2021 Mar 24
TI  - The Role of the Reactive Species Involved in the Photocatalytic Degradation of 
      HDPE Microplastics Using C,N-TiO(2) Powders.
LID - 10.3390/polym13070999 [doi]
LID - 999
AB  - Microplastics (MPs) are distributed in a wide range of aquatic and terrestrial 
      ecosystems throughout the planet. They are known to adsorb hazardous substances 
      and can transfer them across the trophic web. To eliminate MPs pollution in an 
      environmentally friendly process, we propose using a photocatalytic process that 
      can easily be implemented in wastewater treatment plants (WWTPs). As 
      photocatalysis involves the formation of reactive species such as holes (h(+)), 
      electrons (e(-)), hydroxyl (OH(●)), and superoxide ion (O(2)(●-)) radicals, it is 
      imperative to determine the role of those species in the degradation process to 
      design an effective photocatalytic system. However, for MPs, this information is 
      limited in the literature. Therefore, we present such reactive species' role in 
      the degradation of high-density polyethylene (HDPE) MPs using C,N-TiO(2). 
      Tert-butanol, isopropyl alcohol (IPA), Tiron, and Cu(NO(3))(2) were confirmed as 
      adequate OH(●), h(+), O(2)(●-) and e(-) scavengers. These results revealed for 
      the first time that the formation of free OH(●) through the pathways involving 
      the photogenerated e(-) plays an essential role in the MPs' degradation. 
      Furthermore, the degradation behaviors observed when h(+) and O(2)(●-) were 
      removed from the reaction system suggest that these species can also perform the 
      initiating step of degradation.
FAU - Vital-Grappin, Aranza Denisse
AU  - Vital-Grappin AD
AUID- ORCID: 0000-0002-5122-5782
AD  - Universidad Autonoma de Nuevo Leon, Facultad de Ciencias Quimicas, Av. 
      Universidad S/N Ciudad Universitaria, San Nicolas de los Garza C.P. 66455, Nuevo 
      Leon, Mexico.
FAU - Ariza-Tarazona, Maria Camila
AU  - Ariza-Tarazona MC
AUID- ORCID: 0000-0003-4966-5217
AD  - Department of Engineering "Enzo Ferrari", University of Modena and Reggio Emilia, 
      Via P. Vivarelli 10/1, 41125 Modena, Italy.
FAU - Luna-Hernandez, Valeria Montserrat
AU  - Luna-Hernandez VM
AD  - Universidad Autonoma de Nuevo Leon, Facultad de Ciencias Quimicas, Av. 
      Universidad S/N Ciudad Universitaria, San Nicolas de los Garza C.P. 66455, Nuevo 
      Leon, Mexico.
FAU - Villarreal-Chiu, Juan Francisco
AU  - Villarreal-Chiu JF
AUID- ORCID: 0000-0002-0419-9294
AD  - Universidad Autonoma de Nuevo Leon, Facultad de Ciencias Quimicas, Av. 
      Universidad S/N Ciudad Universitaria, San Nicolas de los Garza C.P. 66455, Nuevo 
      Leon, Mexico.
AD  - Centro de Investigacion en Biotecnologia y Nanotecnologia (CIByN), Facultad de 
      Ciencias Quimicas, Universidad Autonoma de Nuevo Leon, Parque de Investigacion e 
      Innovacion Tecnologica, Km. 10 Autopista al Aeropuerto Internacional Mariano 
      Escobedo, Apodaca 66629, Nuevo Leon, Mexico.
FAU - Hernandez-Lopez, Juan Manuel
AU  - Hernandez-Lopez JM
AUID- ORCID: 0000-0002-0588-9094
AD  - Universidad Autonoma de Nuevo Leon, Facultad de Ciencias Quimicas, Av. 
      Universidad S/N Ciudad Universitaria, San Nicolas de los Garza C.P. 66455, Nuevo 
      Leon, Mexico.
FAU - Siligardi, Cristina
AU  - Siligardi C
AUID- ORCID: 0000-0003-1642-832X
AD  - Department of Engineering "Enzo Ferrari", University of Modena and Reggio Emilia, 
      Via P. Vivarelli 10/1, 41125 Modena, Italy.
FAU - Cedillo-Gonzalez, Erika Iveth
AU  - Cedillo-Gonzalez EI
AUID- ORCID: 0000-0001-5041-1404
AD  - Universidad Autonoma de Nuevo Leon, Facultad de Ciencias Quimicas, Av. 
      Universidad S/N Ciudad Universitaria, San Nicolas de los Garza C.P. 66455, Nuevo 
      Leon, Mexico.
AD  - Department of Engineering "Enzo Ferrari", University of Modena and Reggio Emilia, 
      Via P. Vivarelli 10/1, 41125 Modena, Italy.
LA  - eng
GR  - PN-2017/5167/Consejo Nacional de Ciencia y Tecnologia/
GR  - PRODEP 511-6/18-892/Secretaria de Educacion Publica/
GR  - PAICYT IT1277-20/Universidad Autonoma de Nuevo Leon/
PT  - Journal Article
DEP - 20210324
PL  - Switzerland
TA  - Polymers (Basel)
JT  - Polymers
JID - 101545357
PMC - PMC8037624
OTO - NOTNLM
OT  - C,N-TiO2
OT  - HDPE
OT  - microbeads
OT  - microplastics
OT  - nanotechnology
OT  - photocatalysis
OT  - plastic pollution
OT  - remediation
OT  - scavengers
OT  - visible light photodegradation
COIS- The authors declare no conflict of interest. The funders had no role in the 
      design of the study; in the collection, analyses, or interpretation of data; in 
      the writing of the manuscript, or in the decision to publish the results.
EDAT- 2021/04/04 06:00
MHDA- 2021/04/04 06:01
PMCR- 2021/03/24
CRDT- 2021/04/03 01:19
PHST- 2021/02/28 00:00 [received]
PHST- 2021/03/21 00:00 [revised]
PHST- 2021/03/22 00:00 [accepted]
PHST- 2021/04/03 01:19 [entrez]
PHST- 2021/04/04 06:00 [pubmed]
PHST- 2021/04/04 06:01 [medline]
PHST- 2021/03/24 00:00 [pmc-release]
AID - polym13070999 [pii]
AID - polymers-13-00999 [pii]
AID - 10.3390/polym13070999 [doi]
PST - epublish
SO  - Polymers (Basel). 2021 Mar 24;13(7):999. doi: 10.3390/polym13070999.