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All Journal Piston: Journal of Technical Engineering Ramatekno
Nurfadillah, Elsa
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Aerospace Engineering Automotive Engineering Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Synthesis and Characterization of Dual-doped (Al, Co) ZnO Nanofibers for Sustainable Piezoelectric Nanogenerator Applications Tauvana, Ade Irvan; Nulhakim, Lukman; Nurfadillah, Elsa
Piston: Journal of Technical Engineering Vol. 9 No. 2 (2026)
Publisher : Program Studi Teknik Mesin Universitas Pamulang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/pjte.v9i2.53435

Abstract

This study reports the structural and morphological enhancement of aluminum (Al) and cobalt (Co) co-doped ZnO nanofibers synthesized via electrospinning for piezoelectric applications. The morphology and elemental composition were systematically analyzed using Scanning Electron Microscopy coupled with Energy-Dispersive X-ray Spectroscopy (SEM–EDX), while crystallographic properties were evaluated by X-ray Diffraction (XRD). SEM analysis revealed that the electrospun Al–Co co-doped ZnO nanofibers formed a highly interconnected and porous fibrous network with a uniform diameter distribution and negligible agglomeration, exhibiting diameters of 100–200 nm. EDX results confirmed the successful incorporation of Al and Co dopants into the ZnO matrix without detectable impurities. XRD patterns indicated a well-defined hexagonal wurtzite crystal structure with high crystallinity and a pronounced preferred orientation. The crystallite size, calculated using the Scherrer equation, ranges from 84 to 106 nm. The variation in crystallite size among different diffraction peaks is mainly attributed to differences in peak broadening (FWHM), which may indicate anisotropic crystallite growth and varying degrees of lattice orderingIn addition, the microstrain increased from 1.5 × 10⁻⁴ to 3.8 × 10⁻⁴, suggesting lattice distortion induced by Al³⁺ and Co²⁺ substitution. These findings demonstrate that Al–Co co-doped ZnO nanofibers possess favorable structural characteristics for advanced piezoelectric material development.
ANALISIS MORFOLOGI DAN DISTRIBUSI DIAMETER NANOFIBER ZnO TERAKTIVASI DOPAN AL-CO MELALUI PENCITRAAN SCANNING ELECTRON MICROSCOPY (SEM): - Tauvana, Ade Irvan; Syafrizal; Nulhakim, Lukman; Nurfadillah, Elsa
JURNAL RAMATEKNO Vol 6 No 1 (2026): Ramatekno_6_1_2026
Publisher : LPPM Politeknik Enjinering Indorama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61713/jrt.v6i1.326

Abstract

Doping ZnO menggunakan aluminium (Al) dan kobalt (Co) diketahui dapat memengaruhi struktur kristal akibat perbedaan jari-jari ion dan valensi dibandingkan Zn²⁺, yang berpotensi menimbulkan regangan kisi serta perubahan parameter kisi dan ukuran kristalit. Perubahan struktur tersebut dapat berdampak pada mekanisme pertumbuhan dan morfologi nanofiber yang dihasilkan melalui proses electrospinning. Penelitian ini bertujuan menganalisis pengaruh variasi komposisi dopan Al dan Co terhadap morfologi nanofiber ZnO. Nanofiber disintesis menggunakan metode electrospinning, diikuti proses kalsinasi dalam furnace, kemudian dikarakterisasi menggunakan Scanning Electron Microscopy (SEM JEOL JSM-IT300). Analisis diameter serat dilakukan sebanyak 50 kali pengukuran menggunakan perangkat lunak ImageJ dan Origin. Hasil menunjukkan bahwa variasi komposisi dopan memengaruhi ukuran dan keseragaman diameter serat. Variasi A (100% AlCl₃) menghasilkan diameter rata-rata terkecil sebesar 92,163 nm, sedangkan variasi E (100% CoAc₂) menghasilkan diameter rata-rata terbesar sebesar 155,067 nm dengan rentang ukuran lebih lebar. Variasi B dan C menunjukkan peningkatan diameter rata-rata hingga 139,984 nm dan 134,264 nm, sementara variasi D menurun menjadi 103,443 nm. Perubahan diameter tidak menunjukkan kecenderungan linier terhadap fraksi dopan, sehingga komposisi Al dan Co berperan dalam memodifikasi distribusi dan morfologi serat, namun bukan sebagai pengendali tunggal ukuran serat.
Co-Authors Nulhakim, Lukman syafrizal