MRS Meetings and Events


EL07.09.13 2023 MRS Fall Meeting

Radiation Synthesis of Multimetallic Nanoparticles on 1-D Metal Oxide Nanotubes via Carbothermal Shock of Carbon Nanofibers for Highly Sensitive Acetone Gas Sensors

When and Where

Nov 29, 2023
8:00pm - 10:00pm

Hynes, Level 1, Hall A



Jaehyun Ko1,Il-Doo Kim1

Korea Advanced Institute of Science and Technology1


Jaehyun Ko1,Il-Doo Kim1

Korea Advanced Institute of Science and Technology1
Multi-metallic nanoparticles (MMNPs) have generated significant interest in various fields such as catalysis, bioimaging, and gas sensors due to their improved catalytic performance. Therefore, it is crucial to develop an efficient, cost-effective, and straightforward synthesis method for MMNPs, as the synthetic approach directly affects their applicability, stability, and performance. Traditional methods often involve intricate and expensive experimental procedures. Among the various approaches to synthesizing MMNPs, the carbothermal shock (CTS) synthesis has gained attention for its simple yet sophisticated mechanism. However, the CTS synthesis has a limitation, as it requires oxygenated, conductive carbon as a supporting material. To broaden the range of suitable substrates, we propose a novel and uncomplicated method that utilizes carbon support solely as a heat generator for the direct synthesis of MMNPs on SnO<sub>2</sub> nanotubes. The experimental procedure involves synthesizing SnO<sub>2</sub> nanotubes using the conventional electrospinning method, followed by loading Pt, Pd, and Ni precursors onto the synthesized SnO<sub>2</sub> nanotubes through immersion of SnO<sub>2</sub> powders in Pt, Pd, and Ni precursor solutions. The precursor-loaded SnO<sub>2</sub> nanotubes are then covered with a carbon nanofiber (CNF) film, and electrically-triggered Joule heating of the CNF film in a vacuum induces carbothermal shock. The successful deposition of Pt, Pd mono-metallic, PdPt, PtNi bi-metallic, and PdPtNi tri-metallic nanoparticles on SnO<sub>2</sub> nanotubes has been demonstrated using double cs-corrected transmission electron microscopy and energy dispersive X-ray analysis. The nanoparticle synthesis mechanism has been investigated using various analytical techniques. The MMNP-decorated SnO<sub>2</sub> nanotubes exhibit highly sensitive gas sensing performance, indicating the feasibility and potential of this research. This work expands the applicability of the conventional CTS synthesis method and enables the straightforward decoration of different combinations of MMNPs onto various non-carbon supports, including semiconducting metal oxide substrates.


annealing | ceramic | chemical composition

Symposium Organizers

Gabriela Borin Barin, Empa
Shengxi Huang, Rice University
Yuxuan Cosmi Lin, TSMC Technology Inc
Lain-Jong Li, The University of Hong Kong

Symposium Support

Montana Instruments

Oxford Instruments WITec
Raith America, Inc.

Session Chairs

Gabriela Borin Barin
Yuxuan Cosmi Lin

In this Session

Large-Area, Pulsed Laser Deposition of MoS2/a-BN Heterostructures for Back-Gate Field Effect Transistors Applications

A Study of Transport and Optical Properties of Liquid Nitrogen-Assisted Deposition of Titanium Oxynitride Thin Films

High-Performance Electromechanical Power Generation of Lithography-Free Large-Scale MoS2 Monolayer Film Harvesters

An Investigation of Lithium and Cobalt Intercalation Method in 2D Transition Metal Dichalcogenides

Effect of Hot-Wire Oxidization and Sulfur Annealing on Layered p-MoS2 for TFT Application

Photoelectrochemical Polymerization (PEP) of EDOT for Formation of Pattered PEDOT at Specific Arbitrary Regions on Hematite (α-Fe2O3)

Spatially Resolved and In Situ Electrochemical Imaging on Two-Dimensional Materials using Scanning ElectroChemical Cell Microscopy (SECCM)

Nanowire-Based Sensor Platform for Breath Analysis

Sensitive Microwave Spectroscopy of Van der Waals Materials with Coplanar Waveguides

Ultratrace PFAS Detection using Amplifying Fluorescent Polymers

View More »

Publishing Alliance

MRS publishes with Springer Nature