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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Sains dan Teknologi JURNAL POLI-TEKNOLOGI Recent in Engineering Science and Technology
Tia Rahmiati
Politeknik Negeri Jakarta
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Journal : recent in engineering science and technology

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Surface Character of Magnetic Ce-doped TiO2 for Photocatalytic Performance Enhancement Tia Rahmiati; Ching-Cheng Chen; Siti Asmahani Saad; Nugroho Eko; Asep Apriana
Recent in Engineering Science and Technology Vol. 1 No. 1 (2023): RiESTech Vol. 1 No. 1 Years 2023
Publisher : MBI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59511/riestech.v1i01.2

Abstract

Using a modified sol-gel method for magnetic photocatalyst, the core shell structure of Ce-doped TiO2@SiO2@ferrite composite nanoparticles (NPs) was created. X-ray diffraction (XRD), Brunauer–Emmit–Teller (BET), and a superconducting quantum interference device (SQUID) were used to examine the physicochemical properties of the products as they were prepared. The ultraviolet-visible spectrometry (UV-vis) was used to measure the catalyst's photocatalytic activity. On the composite NPs' outer shell coating, the anatase phase related to the TiO2 structure was constructed. On the Ce-doped TiO2 layers, a mesoporous structure with uniform pore size was created, resulting in a specific surface area of 111.916 m2g-1. In the meantime, the thin TiO2 coating contained the redox couple of Ce3+ and Ce4+. An external magnetic field can also be used to separate the catalyst's magnetic NPs from the reaction system. In the aqueous solution of methylene blue (MB), the degradation efficiency and product performance were both 50 percentage
Dynotest Design Analysis for Electrical Converted Vehicles Danardono Agus Sumarsono; Fuad Zainuri; Muhammad Hidayat Tullah; Rahmat Noval; Sonki Prasetya; Rahmat Subarkah; Tia Rahmiati; Widiyatmoko widi; Muhammad Ridwan
Recent in Engineering Science and Technology Vol. 1 No. 1 (2023): RiESTech Vol. 1 No. 1 Years 2023
Publisher : MBI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59511/riestech.v1i01.3

Abstract

The study comprises dynotest design and analysis to measure torque and horsepower. Basically, a dynotest carried out by apply certain load to the axle of a combustion motor through the braking mechanism of its crankshaft. Due to the high price of a Dynotest unit in the market, it is relatively difficult for a developing institution to own it on their site. The study target to design a simple and good accurate Dynotest within a reasonable price. The study used a common standard method for design analysis which rely on function and structural approach. Functionally, Dynotest is designed to be used to an ouput of an electical motor. Loading on motor shaft was done by disc brake braking mechanism. Structurally, Dynotest was designed to use rollers. As a main component, its mounting construction is connected to a motor to generate electrical power. Power transmitted from the motor to Dynotest through a center joint shaft, torque measured by load cell while the rotation of shaft itself counted by a digital tachometer. Test result show that electricity was produced from the simple construction and Dynotest functioned well in measuring it. Measurement data of roller support shaft performance showed a motor torque performance curve which are similar with the typical of similar Dynotest. Construction Test done by applying Solid Work software analysis to some components partially on rollers and on the construction assembly as a whole unit
Co-Authors Amalina Shomami Arifia Ekayuliana Asep Apriana Ching-Cheng Chen Danardono A.S Danardono A.S Danardono Agus Sumarsono Dewin Purnama Fachruddin Fachruddin Fuad Zainuri Iwan Susanto Jauhari Ali M. Adhitya M. Hidayat Tullah M. Ridwan M. Todaru Muhammad Hidayat Tullah Muhammad Ridwan Nugroho Eko Nugroho Eko Setijogiarto R. Subarkah Rahman Filzi Rahmat Nova Rahmat Noval Rahmat Subarkah Siti Asmahani Saad Sonki Prasetya Vika Rizkia Vina Nanda Garjati Widiyatmoko widi