PMID- 38531183
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20240406
IS  - 1095-7103 (Electronic)
IS  - 0021-9797 (Linking)
VI  - 664
DP  - 2024 Jun 15
TI  - Ternary (molybdenum disulfide/graphene)/carbon nanotube nanocomposites assembled 
      via a facile colloidal electrostatic path as electrocatalysts for the oxygen 
      reduction reaction: Composition and nitrogen-doping play a key role in their 
      performance.
PG  - 1056-1068
LID - S0021-9797(24)00487-9 [pii]
LID - 10.1016/j.jcis.2024.03.014 [doi]
AB  - Nanocomposites have garnered attention for their potential as catalysts in 
      electrochemical reactions vital for technologies like fuel cells, water 
      splitting, and metal-air batteries. This work focuses on developing 
      three-dimensional (3D) nanocomposites through aqueous phase exfoliation, 
      non-covalent functionalization of building blocks with surfactants and polymers, 
      and electrostatic interactions in solution leading to the nanocomposites assembly 
      and organization. By combining molybdenum disulfide (MoS(2)) layers with graphene 
      nanoplatelets (GnPs) to form a binary 2D composite (MoS(2)/GnP), and subsequently 
      incorporating multiwalled carbon nanotubes (MWNTs) to create ternary 3D 
      composites, we explore their potential as catalysts for the oxygen reduction 
      reaction (ORR) critical in fuel cells. Characterization techniques such as X-ray 
      photoelectron spectroscopy, scanning electron microscopy, and X-ray diffraction 
      elucidate material composition and structure. Our electrochemical studies reveal 
      insights into the kinetics of the reactions and structure-activity relationships. 
      Both the (MoS(2)/GnP)-to-MWNT mass ratio and nitrogen-doping of GnPs (N-GnPs) 
      play a key role on the electrocatalytic ORR performance. Notably, the 
      (MoS(2)/N-GnP)/MWNT material, with a 3:1 mass ratio, exhibits the most effective 
      ORR activity. All catalysts demonstrate good long-term stability and methanol 
      crossover tolerance. This facile fabrication method and observed trends offer 
      avenues for optimizing composite electrocatalysts further.
CI  - Copyright (c) 2024 The Author(s). Published by Elsevier Inc. All rights reserved.
FAU - Rocha, Marcos
AU  - Rocha M
AD  - CIQUP - Centro de Investigacao em Quimica da Universidade do Porto, Institute of 
      Molecular Sciences (IMS), Departamento de Quimica e Bioquimica, Faculdade de 
      Ciencias, Universidade do Porto, Rua do Campo Alegre s/n, Porto 4169-007, 
      Portugal; REQUIMTE-LAQV, Departamento de Quimica e Bioquimica, Faculdade de 
      Ciencias, Universidade do Porto, Rua do Campo Alegre s/n, Porto 4169-007, 
      Portugal.
FAU - Abreu, Barbara
AU  - Abreu B
AD  - CIQUP - Centro de Investigacao em Quimica da Universidade do Porto, Institute of 
      Molecular Sciences (IMS), Departamento de Quimica e Bioquimica, Faculdade de 
      Ciencias, Universidade do Porto, Rua do Campo Alegre s/n, Porto 4169-007, 
      Portugal; REQUIMTE-LAQV, Departamento de Quimica e Bioquimica, Faculdade de 
      Ciencias, Universidade do Porto, Rua do Campo Alegre s/n, Porto 4169-007, 
      Portugal.
FAU - Nunes, Marta S
AU  - Nunes MS
AD  - REQUIMTE-LAQV, Departamento de Quimica e Bioquimica, Faculdade de Ciencias, 
      Universidade do Porto, Rua do Campo Alegre s/n, Porto 4169-007, Portugal. 
      Electronic address: marta.nunes@fc.up.pt.
FAU - Freire, Cristina
AU  - Freire C
AD  - REQUIMTE-LAQV, Departamento de Quimica e Bioquimica, Faculdade de Ciencias, 
      Universidade do Porto, Rua do Campo Alegre s/n, Porto 4169-007, Portugal.
FAU - Marques, Eduardo F
AU  - Marques EF
AD  - CIQUP - Centro de Investigacao em Quimica da Universidade do Porto, Institute of 
      Molecular Sciences (IMS), Departamento de Quimica e Bioquimica, Faculdade de 
      Ciencias, Universidade do Porto, Rua do Campo Alegre s/n, Porto 4169-007, 
      Portugal. Electronic address: efmarque@fc.up.pt.
LA  - eng
PT  - Journal Article
DEP - 20240306
PL  - United States
TA  - J Colloid Interface Sci
JT  - Journal of colloid and interface science
JID - 0043125
SB  - IM
OTO - NOTNLM
OT  - Carbon and layered nanomaterials
OT  - Electrocatalysts
OT  - Fuel cells
OT  - Nanocomposites
OT  - Oxygen reduction reaction
OT  - Surfactants
COIS- Declaration of competing interest The authors declare that they have no known 
      competing financial interests or personal relationships that could have appeared 
      to influence the work reported in this paper.
EDAT- 2024/03/27 00:44
MHDA- 2024/03/27 00:45
CRDT- 2024/03/26 19:06
PHST- 2023/12/26 00:00 [received]
PHST- 2024/02/13 00:00 [revised]
PHST- 2024/03/03 00:00 [accepted]
PHST- 2024/03/27 00:45 [medline]
PHST- 2024/03/27 00:44 [pubmed]
PHST- 2024/03/26 19:06 [entrez]
AID - S0021-9797(24)00487-9 [pii]
AID - 10.1016/j.jcis.2024.03.014 [doi]
PST - ppublish
SO  - J Colloid Interface Sci. 2024 Jun 15;664:1056-1068. doi: 
      10.1016/j.jcis.2024.03.014. Epub 2024 Mar 6.