Synergistic effects of zirconium and silver co-dopants in TiO2 nanoparticles for photocatalytic degradation of an organic dye and antibacterial activity

บทความในวารสาร

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Sanitnon, Pornrat; Chiarakorn, Siriluk; Chawengkijwanich, Chamorn; Chuangchote, Surawut; Pongprayoon, Thirawudh;

ผู้เผยแพร่: Springer

ปีที่เผยแพร่ (ค.ศ.): 2020

วารสาร: Journal of the Australian Ceramic Society (2510-1560)

Volume number: 56

Issue number: 2

หน้าแรก: 579

หน้าสุดท้าย: 590

จำนวนหน้า: 12

นอก: 2510-1560

eISSN: 2510-1579

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85081258446&doi=10.1007%2fs41779-019-00368-w&partnerID=40&md5=96e73d71a418f5dd5e267c010e2b526e

ภาษา: English-Great Britain (EN-GB)

ดูในเว็บของวิทยาศาสตร์ | ดูบนเว็บไซต์ของสำนักพิมพ์ | บทความในเว็บของวิทยาศาสตร์

บทคัดย่อ

The objective of this research is to study the effects of zirconium and silver co-dopants on the photocatalytic reactivity of TiO2. Zirconium and silver co-doped titanium dioxide (Zr-Ag co-doped TiO2) was synthesized by sol-gel method. The molar ratio of silver was fixed at 5% mol, while the molar ratio of zirconium was varied at 5, 10, and 15% mol. The synthesized photocatalysts were calcined at 500 °C for 5 h. The characteristics of the photocatalysts were examined by X-ray diffraction spectroscopy (XRD), ultraviolet-visible spectroscopy (UV-Vis), and field emission scanning electron microscope (FESEM). The XRD results indicated that the anatase phase of TiO2 and metal doping did not affect the crystal phase of TiO2, and the FESEM confirmed the presence of silver and zirconium in co-doped TiO2. After doping, the band gap energy of the doped TiO2 was significantly reduced due to the red shift effect. The photocatalytic reactivity and kinetics of the photocatalysts were investigated by photocatalytic decolorization of methylene blue (MB) under UV and fluorescent light. Photocatalytic decolorization of MB dramatically improved when TiO2 was co-doped with silver and zirconium. The antibacterial efficiency of Zr-Ag co-doped TiO2 against Escherichia coli (E. coli) was also investigated under fluorescent light and in the dark. The synergistic effects of zirconium and silver dopants on the photocatalytic and antibacterial activity of TiO2 were observed. The 5% mol of silver and 10% mol of zirconium co-doped TiO2 exhibited the highest decolorization efficiency at 98.07% under fluorescent light and could completely inhibit E. coli under fluorescent light within 20 min. [Figure not available: see fulltext.]. © 2019, Australian Ceramic Society.

คำสำคัญ

zirconium