Detail publikace

Atomic tuning of 3D printed carbon surface chemistry for electrocatalytic nitrite oxidation and reduction to ammonia

GAO, W. MICHALIČKA, J. PUMERA, M.

Originální název

Atomic tuning of 3D printed carbon surface chemistry for electrocatalytic nitrite oxidation and reduction to ammonia

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Nitrite contamination in agricultural and industrial wastewater presents a critical impact on environmental sustainability, demanding efficient strategies for monitoring and remediation. This study addresses this challenge by developing cost-effective electrocatalysts for both nitrite detection and conversion to value-added ammonia. 3D printed carbon materials are explored as bifunctional platforms for the electrochemical nitrite oxidation reaction (NO2OR) and nitrite reduction reaction (NO2RR). Benefiting from the inherent Ti-dominated metallic impurities and intrinsic surface features of carbon nanotubes, 3D printed carbon electrodes exhibit electrocatalytic activity for both reactions. To enhance this activity, we further introduce an effective fabrication methodology that combines 3D printing of carbon substrates with precise surface modification using atomic layer deposition (ALD) of TiO2. The resulting TiO2-coated carbon electrode demonstrates significantly improved electrocatalytic properties. For NO2OR, it exhibits a peak current density of 0.75 mA cm-2 at 1.53 V vs. RHE, while for NO2RR, it achieves a yield rate of 630.5 mu g h-1 cm-2 with a faradaic efficiency of 81.9% at -1.06 V vs. RHE. This enhancement in electrocatalytic activity is primarily attributed to the formation of abundant interfaces between the conductive carbon and ALD-coated TiO2. The developed methodology not only enables precise modification of 3D printed carbon surface chemistry but also presents a scalable method for electrocatalyst production.

Klíčová slova

Bioremediation; Carbon electrodes; Electrochemical oxidation; Electrolysis; Nitrogen oxides; Oxygen reduction reaction; Surface chemistry; Titanium dioxide; Titanium nitride

Autoři

GAO, W.; MICHALIČKA, J.; PUMERA, M.

Vydáno

26. 11. 2024

Nakladatel

ROYAL SOC CHEMISTRY

Místo

CAMBRIDGE

ISSN

2050-7496

Periodikum

Journal of Materials Chemistry A

Ročník

12

Číslo

46

Stát

Spojené království Velké Británie a Severního Irska

Strany od

32458

Strany do

32470

Strany počet

13

URL

https://pubs.rsc.org/en/content/articlelanding/2024/ta/d4ta06800a

BibTex

@article{BUT197199,
  author="Wanli {Gao} and Martin {Pumera} and Jan {Michalička}",
  title="Atomic tuning of 3D printed carbon surface chemistry for electrocatalytic nitrite oxidation and reduction to ammonia",
  journal="Journal of Materials Chemistry A",
  year="2024",
  volume="12",
  number="46",
  pages="32458--32470",
  doi="10.1039/d4ta06800a",
  issn="2050-7496",
  url="https://pubs.rsc.org/en/content/articlelanding/2024/ta/d4ta06800a"
}