Cotton fabric derived alpha Fe magnetic porous carbon as electrocatalyst for alkaline direct ethanol fuel cell

Author(s)

Komatsu, Jenny S. ^{[1, 2]} ; Souza, Felipe M. ^[3] ; Pinheiro, Victor S. ^[3] ; Bohnstedt, Paula ^[3] ; de Pape, Pol W. G. ^[2] ; Mandelli, Dalmo ^[1] ; Santos, Mauro C. ^[3] ; Carvalho, Wagner A. ^[1]

Affiliation

^[1] Fed Univ ABC, Nat & Human Sci Ctr CCNH, Sustainable Technol Unit NuTS, Ave Estados 5001, BR-09210170 Santo Andre, SP - Brazil

^[2] Rigaku Latin Amer, Ave Dr Arnaldo 1980, BR-01255000 Sao Paulo, SP - Brazil

^[3] Fed Univ ABC, Nat & Human Sci Ctr CCNH, Electrochem & Nanostruct Mat Lab LEMN, Ave Estados 5001, BR-09210170 Santo Andre, SP - Brazil

• Document type: Journal article
• Source: CATALYSIS TODAY; v. 381, p. 65-75, DEC 1 2021.
• Web of Science Citations: 1

Abstract

Activate carbon (AC) demand has increased worldwide, with application in adsorption, heterogeneous catalysis, and most recently as electrocatalyst support. However, while AC production from agro-industrial waste are widely researched, textile waste is neglected as raw material. In this study, cotton fabric was first applied as textile dye adsorbent after iron impregnation, which enhanced the adsorption capacity. The dye adsorbed fabric was than sequentially pyrolyzed at 800 degrees C for 2 h under N-2 atmosphere, producing a magnetic mesoporous activated carbon (MAC) of 472 m(2) g(-1) BET surface area with 82% micropores and magnetization saturation of 34.2 emu g(-1) deriving from encapsulated metallic alpha Fe. This new simple and fast one-step carbonization, activation and iron incorporation method, has very low chemicals consumption and waste generation compared to the traditionally applied ones. The so produced MAC was loaded with 20 % Pd and tested for electrocatalyst properties: high density current for ethanol oxidation of 549 mA mg(-1) Pd, 1.37 times higher than using commercial Pd catalyst, lower onset potential of -0.48 V vs NHE. Application of the electrocatalyst for direct ethanol fuel cell achieved a high energy production of 27 mW cm(-2) at 353 K. (AU)

• FAPESP's process: 17/22976-0 - Development of palladium and niobium nanoelectrocatalysts for alkaline direct ethanol fuel cells
• Grantee: Felipe de Moura Souza
• Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
• FAPESP's process: 15/10314-8 - Nanostructures for Phenol, Ciprofloxacin and 17±-ethinylestradiol Degradation
• Grantee: Mauro Coelho dos Santos
• Support Opportunities: Regular Research Grants
• FAPESP's process: 17/10118-0 - Study and application of electrochemical technology for the analysis and degradation of endocrine interferents: materials, sensors, processes and scientific dissemination
• Grantee: Marcos Roberto de Vasconcelos Lanza
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 18/01258-5 - Novel chemical catalytic and photocatalytic processes for the direct conversion of methane and CO2 to products
• Grantee: José Maria Correa Bueno
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 18/26307-9 - Development of Pd and Nb electrocatalysts for application in fuel cells and degradation of organic pollutants
• Grantee: Paula Böhnstedt
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• FAPESP's process: 17/26288-1 - Hybrid electrocatalysts based on Pd, Pt and Sn nanoparticles, and on ceria nanorods for application in fuel cells
• Grantee: Victor dos Santos Pinheiro
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 17/24931-4 - Polyols conversion promoted by alternative catalysts under conventional and microwave heating
• Grantee: Wagner Alves Carvalho
• Support Opportunities: Regular Research Grants
• FAPESP's process: 17/21846-6 - Nanostructures for environmental remediation and power generation from renewable sources
• Grantee: Mauro Coelho dos Santos
• Support Opportunities: Program for Research on Bioenergy (BIOEN) - Regular Program Grants