Ditemukan 7 dokumen yang sesuai dengan query
Luche, Jean-Louis
London: Plenium Press, 1998
547.13 LUC s
Buku Teks Universitas Indonesia Library
Boca Raton : CRC Pres, 2012
660 HAN
Buku Teks Universitas Indonesia Library
W. Widiyastuti
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Nanostructured zincoxide (ZnO) was synthesized via a sonochemical method. The effect of the duration of ultrasonic irradiation in a continuous mode on the generated particles was investigated. Additionally, the effect of flowing either air or nitrogen during the sonication process was investigated. Zinc nitrate and
ammonia water-based solutions were selected as chemicals without the addition
of other surfactants. The generated particles indicated that a wurtzite
structure of ZnO in a hexagonal phase was formed with a crystalline size ...
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2016
J-Pdf
Artikel Jurnal Universitas Indonesia Library
W. Widiyastuti
"
Nanostructured zinc oxide (ZnO) was synthesized via a sonochemical method. The effect of the duration of ultrasonic irradiation in a continuous mode on the generated particles was investigated. Additionally, the effect of flowing either air or nitrogen during the sonication process was investigated. Zinc nitrate and ammonia water-based solutions were selected as chemicals without the addition of other surfactants. The generated particles indicated that a wurtzite structure of ZnO in a hexagonal phase was formed ...
"
Depok: Faculty of Engineering, Universitas Indonesia, 2016
UI-IJTECH 7:6 (2016)
Artikel Jurnal Universitas Indonesia Library
Munawar Khalil
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This paper presents an investigation on the method for synthesizing hematite nanoparticle using ultrasonic sonochemistry. The effect of various bases with different basicity strengths, i.e. NaOH, NH4OH, and butylamine, as well as sintering treatment on the purity and crystallinity of hematite nanoparticles was studied. In this work, the as-synthesized hematite nanoparticles were characterized using FTIR, XRD, and HR-TEM analyses. The results showed that the formation of hematite crystal can undergo two possible reaction pathways depending ...
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Depok: Faculty of Engineering, Universitas Indonesia, 2017
UI-IJTECH 8:4 (2017)
Artikel Jurnal Universitas Indonesia Library
Karina Nur Fitriana
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Single phased SrO.6Fe2-xMnx/2Tix/2O3 (x = 0.0; 0.5; and 1.0) nanoparticles, whose mean size was comparable with the crystallite size, were successfully fabricated through mechanical alloying and a subsequent ultrasonic destruction processes. The ultrasonic destruction process employed a transducer operated under amplitudes of 35, 45, and 55 ?m. Results indicated that the mean particle size was not determined by the transducer amplitude, but the mechanical properties of the materials, as well as the initial size of ...
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Depok: Faculty of Engineering, Universitas Indonesia, 2017
UI-IJTECH 8:4 (2017)
Artikel Jurnal Universitas Indonesia Library
Simatupang, Felly Rihlat Gibran
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Minyak atsiri merupakan senyawa penting dalam bahan alam, yang memiliki banyak khasiat bagi kesehatan manusia. Minyak atsiri dapat diambil dari bahan alam dengan proses ekstraksi. Salah satu proses ekstraksi yang sedang menjadi tren penelitian adalah ekstraksi ultrasonik, yang dinilai memiliki banyak keunggulan, seperti kemudahan operasi, energi yang relatif rendah, dan operasi pada temperatur rendah yang dapat menjaga stabilitas senyawa biokimia dalam bunga telang. Salah satu kebaruan dalam penelitian ini adalah adanya penambahan mekanisme probe yang ...
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Depok: Fakultas Teknik Universitas Indonesia, 2022
T-pdf
UI - Tesis Membership Universitas Indonesia Library
