Partially Reduced TiO2 Aerogel as a Catalyst of Oxygen Reduction Reaction in Alkaline Solution

Jinqiong Tang; Jian Ren; Zhiyang Zhao; Yong Kong; Xiaodong Shen

doi:10.1246/cl.220210

Partially Reduced TiO₂ Aerogel as a Catalyst of Oxygen Reduction Reaction in Alkaline Solution

Jinqiong Tang, Jian Ren, Zhiyang Zhao, Yong Kong, Xiaodong Shen

College of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

A resorcinol-formaldehyde/titanium oxide (RF/TiO₂) aerogel was synthesized via an acid-catalyzed sol-gel process followed by CO₂ supercritical drying. After the thermal treatment of the RF/TiO₂ aerogel, the partially reduced TiO₂ aerogel (PRTA) was prepared as a catalyst for oxygen reduction reaction (ORR). Magnéli phase (Ti₄O₇) and anatase with oxygen vacancies were formed in PRTA. The specific surface area and the pore volume of PRTA were 637 m² g¹¹ and 1.72 cm³ g¹¹, respectively. RF-derived carbon, TiO₂(a)/TiO₂(r), and TiO₂(a) were also prepared to estimate the origin of ORR activity. The E_onset, E₁/₂, and J_limit were 0.75 V, 0.65 V, and 3.33 mA cm¹², respectively. Its stability outperformed Pt/C. This preparation method is inspiring for preparing the Magnéli phase with a better pore structure.

Original language	English
Pages (from-to)	862-866
Number of pages	5
Journal	Chemistry Letters
Volume	51
Issue number	8
DOIs	https://doi.org/10.1246/cl.220210
State	Published - Aug 2022

Keywords

Catalysis
Magnéli phase
TiO2 aerogel

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title = "Partially Reduced TiO2 Aerogel as a Catalyst of Oxygen Reduction Reaction in Alkaline Solution",

abstract = "A resorcinol-formaldehyde/titanium oxide (RF/TiO2) aerogel was synthesized via an acid-catalyzed sol-gel process followed by CO2 supercritical drying. After the thermal treatment of the RF/TiO2 aerogel, the partially reduced TiO2 aerogel (PRTA) was prepared as a catalyst for oxygen reduction reaction (ORR). Magn{\'e}li phase (Ti4O7) and anatase with oxygen vacancies were formed in PRTA. The specific surface area and the pore volume of PRTA were 637 m2 g11 and 1.72 cm3 g11, respectively. RF-derived carbon, TiO2(a)/TiO2(r), and TiO2(a) were also prepared to estimate the origin of ORR activity. The Eonset, E1/2, and Jlimit were 0.75 V, 0.65 V, and 3.33 mA cm12, respectively. Its stability outperformed Pt/C. This preparation method is inspiring for preparing the Magn{\'e}li phase with a better pore structure.",

keywords = "Catalysis, Magn{\'e}li phase, TiO2 aerogel",

author = "Jinqiong Tang and Jian Ren and Zhiyang Zhao and Yong Kong and Xiaodong Shen",

note = "Publisher Copyright: {\textcopyright} 2022 The Chemical Society of Japan.",

year = "2022",

month = aug,

doi = "10.1246/cl.220210",

language = "英语",

volume = "51",

pages = "862--866",

journal = "Chemistry Letters",

issn = "0366-7022",

publisher = "Oxford University Press",

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TY - JOUR

T1 - Partially Reduced TiO2 Aerogel as a Catalyst of Oxygen Reduction Reaction in Alkaline Solution

AU - Tang, Jinqiong

AU - Ren, Jian

AU - Zhao, Zhiyang

AU - Kong, Yong

AU - Shen, Xiaodong

PY - 2022/8

Y1 - 2022/8

N2 - A resorcinol-formaldehyde/titanium oxide (RF/TiO2) aerogel was synthesized via an acid-catalyzed sol-gel process followed by CO2 supercritical drying. After the thermal treatment of the RF/TiO2 aerogel, the partially reduced TiO2 aerogel (PRTA) was prepared as a catalyst for oxygen reduction reaction (ORR). Magnéli phase (Ti4O7) and anatase with oxygen vacancies were formed in PRTA. The specific surface area and the pore volume of PRTA were 637 m2 g11 and 1.72 cm3 g11, respectively. RF-derived carbon, TiO2(a)/TiO2(r), and TiO2(a) were also prepared to estimate the origin of ORR activity. The Eonset, E1/2, and Jlimit were 0.75 V, 0.65 V, and 3.33 mA cm12, respectively. Its stability outperformed Pt/C. This preparation method is inspiring for preparing the Magnéli phase with a better pore structure.

AB - A resorcinol-formaldehyde/titanium oxide (RF/TiO2) aerogel was synthesized via an acid-catalyzed sol-gel process followed by CO2 supercritical drying. After the thermal treatment of the RF/TiO2 aerogel, the partially reduced TiO2 aerogel (PRTA) was prepared as a catalyst for oxygen reduction reaction (ORR). Magnéli phase (Ti4O7) and anatase with oxygen vacancies were formed in PRTA. The specific surface area and the pore volume of PRTA were 637 m2 g11 and 1.72 cm3 g11, respectively. RF-derived carbon, TiO2(a)/TiO2(r), and TiO2(a) were also prepared to estimate the origin of ORR activity. The Eonset, E1/2, and Jlimit were 0.75 V, 0.65 V, and 3.33 mA cm12, respectively. Its stability outperformed Pt/C. This preparation method is inspiring for preparing the Magnéli phase with a better pore structure.

KW - Catalysis

KW - Magnéli phase

KW - TiO2 aerogel

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U2 - 10.1246/cl.220210

DO - 10.1246/cl.220210

M3 - 文章

AN - SCOPUS:85136900776

SN - 0366-7022

VL - 51

SP - 862

EP - 866

JO - Chemistry Letters

JF - Chemistry Letters

IS - 8

ER -

Partially Reduced TiO₂ Aerogel as a Catalyst of Oxygen Reduction Reaction in Alkaline Solution

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