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Half-Pipe Palladium Nanotube-Based Hydrogen Sensor Using aSuspended Nanofiber Scaffold

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Penulis : Minkyu Cho [-]
Kontributor / Dosen Pembimbing :
  • Jianxiong Zhu, Hyeonggyun Kim, Kyungnam Kang, and Inkyu Park
Jenis Koleksi : Jurnal elektronik
Tahun Terbit :
Penerbit : Kimia
Fakultas : Fakultas Matematika dan Ilmu Pengetahuan Alam
Subjek : Chemistry
Kata Kunci : electrospinning, electrospun nanofiber, metal nanostructure, palladium nanotube, hydrogen sensor
Sumber : ACS Appl. Mater. InterfacesXXXX, XXX, XXX?XXX
Staf Input/Edit : Latifa Noor  
File : 1 file
Tanggal Input : 04 Apr 2019

A half-pipe palladium nanotube network (H-PdNTN) structure was developedfor high-performance hydrogen (H2) sensor applications. To fabricate the sensor, suspendedpoly(vinyl alcohol) (PVA) nanofiber bundles were electrospun on a conductive substrate,followed by a palladium (Pd) deposition on top of the PVA nanofiber bundles. Then, Pd-deposited PVA nanofibers were transferred to a host substrate, and the PVA nanofibertemplates were selectively removed. Various material analyses confirmed that the PVAnanofibers were successfully dissolved leaving a half-pipe-shaped Pd nanotube network. Thefabricated Pd nanotube-based sensors were tested for H2responses with different gasconcentrations. The 4 nm thick sensor showed the highest response (?R/R0)toH2gas.Platinum (Pt) decoration of the sensor showed an improved response speed compared to thatof the pristine sensor via the catalytic function of Pt. Additionally, the sensor exhibited good H2selectivity against other interfering gases. The H-PdNTN H2sensor provides a facile and cost-effective way to fabricate high-performance H2sensors.

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