Preparation of VO2 nanoparticles with surface functionalization for thermochromic application

บทความในวารสาร

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

ไม่พบข้อมูลที่เกี่ยวข้อง

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Janamphansang L., Wootthikanokkhan J., Nawalertpanya S.

ผู้เผยแพร่: Faculty of Engineering

ปีที่เผยแพร่ (ค.ศ.): 2019

วารสาร: Engineering Journal (0125-8281)

Volume number: 23

Issue number: 5

หน้าแรก: 205

หน้าสุดท้าย: 215

จำนวนหน้า: 11

นอก: 0125-8281

eISSN: 0125-8281

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85073511094&doi=10.4186%2fej.2019.23.5.205&partnerID=40&md5=17e315387e904269dd814ea69674ec0e

ภาษา: English-Great Britain (EN-GB)

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บทคัดย่อ

This recent work investigates on the modification of metal oxide particles surface by the addition of amorphous coating layer. This core-shell structure is expected to decrease particles aggregation and increase their distribution in polymer matrix. VO2 particles were firstly prepared via hydrothermal process with 87% yield and XRD analysis showed that VO2 monoclinic was obtained with 100% of purity. XPS technique also showed that the surface of VO2 particles contains-OH group which is promising to form the strong covalent bond with silane coupling agent. The addition of functional groups on the surface of VO2 particles was then performed by the grafting of (3-Aminopropyl) triethoxysilane (APTES) via the silane anchoring group with 1:10 weight ratio VO2/APTES. The effect of solvent was also studied by using 10 ml of different solvent such as distilled water, ethanol and chloroform during surface coating. The TEM image clearly shows the presence of the thick organic layer on VO2 particles and as a result, the core-shell structure was perfectly identified. The round shape of coated VO2 particles was detected with small aggregation by SEM imageries. Furthermore, the presence of characteristic absorption band of C-H, Si-O-C, Si-O-Si and NH stretching in the FTIR spectra of coated VO2 particles confirmed the existence of APTES on the surface of VO2 particles prepared in distilled water and ethanol. ฉ 2019, Chulalongkorn University, Faculty of Fine and Applied Arts. All rights reserved.

คำสำคัญ

Silane, Surface functionalization, Thermochromic composite film, Vanadium dioxide