Effect of Ni and Al doping on structural, optical, and CO 2 gas sensing properties of 1D ZnO nanorods produced by hydrothermal method

Bulut, Fatih; ÖZTÜRK, Özgür; Acar, Selim; Yıldırım, Gürcan

doi:10.1002/jemt.24013

Effect of Ni and Al doping on structural, optical, and CO 2 gas sensing properties of 1D ZnO nanorods produced by hydrothermal method

Yazarlar (4)

Fatih Bulut Sinop Üniversitesi, Türkiye

Prof. Dr. Özgür ÖZTÜRK Kastamonu Üniversitesi, Türkiye

Prof. Dr. Selim Acar Gazi Üniversitesi, Türkiye

Prof. Dr. Gürcan Yıldırım Bolu Abant İzzet Baysal Üniversitesi, Türkiye

Makale Türü	Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı	Microscopy Research and Technique (Q1)
Dergi ISSN	1059-910X Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler	SCI-Expanded
Makale Dili	İngilizce	Basım Tarihi	12-2022
Cilt / Sayı / Sayfa	85 / 4 / 1502–1517	DOI	10.1002/jemt.24013
Makale Linki	http://dx.doi.org/10.1002/jemt.24013

Özet

In the present study, the one-dimensional ZnO nanorod structures are produced within the different nickel and aluminum molecular weight ratios of 0–7% using the hydrothermal method. It is found that the aluminum (Al) and nickel (Ni) impurities with different ionic radius, chemical valence, and electron configurations of outer shell cause to vary the fundamental characteristic features including the crystallinity quality, crystallite size, surface morphology, nanorod diameter, optical absorbance, energy band gap, resistance, gas response, and gas sensing properties. The structural analyses performed by powder X-ray diffraction (XRD) and scanning electron microscopy (SEM) indicate that the samples are found to crystallize in the hexagonal wurtzite structure. The presence of optimum nickel and aluminum in the crystal system improves considerably the crystallinity quality and surface morphology. Additionally, the combination of electron dispersive X-ray (EDX) and XRD results declare that the Ni and Al impurities incorporate successfully into the ZnO crystal structure. Moreover, the diameters of nanorod structures in 1D orientation are determined to be 80 nm or below. The hexagonal wurtzite-type ZnO nanorod structure prepared by 5% Ni has more space between the nanorods and thus presents higher response to the CO2 detection. Further, the optical absorbance spectra display that the band gap value is observed to decrease regularly with the increment in the doping level as a result of band shrinkage effect depending on the enhancement of mobile hole carrier concentrations in the crystal structure. In other words, the doping mechanism leads to vary the homogeneities in the interfacial charges, nanorod diameters, ZnO oxide layer composition and thickness. The last test conducted in this study is responsible for the determination of CO2 gas sensing levels. The obtained gas sensing results are further compared with each other and literature findings. It is observed that 5% Ni-doped sample provides more successful results than other samples in the sensing CO2 gas at the different concentrations. All in all, the paper establishing a strong methodology between doping mechanism and change in the fundamental characteristic features of hexagonal wurtzite-type ZnO with the aid of advanced microscopy techniques will become pioneering research to answer key questions in materials sciences and electronic research.

Anahtar Kelimeler

aluminum doped | CO2 gas sensing | hydrothermal | nickel doped | zinc oxide nanorod

BM Sürdürülebilir Kalkınma Amaçları

Atıf Sayıları
Web of Science	7
Scopus	9

Effect of Ni and Al doping on structural, optical, and CO 2 gas sensing properties of 1D ZnO nanorods produced by hydrothermal method

Dergi Adı	MICROSCOPY RESEARCH AND TECHNIQUE
Yayıncı	Wiley-Liss Inc.
Açık Erişim	Hayır
ISSN	1059-910X
E-ISSN	1097-0029
CiteScore	5,7
SJR	0,473
SNIP	0,903

Effect of Ni and Al doping on structural, optical, and CO 2 gas sensing properties of 1D ZnO nanorods produced by hydrothermal method

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