In this study, electrochemical exfoliation method was adopted in the production of graphene oxide (GO). The electrolyte used sodium dodecyl sulphate (SDS) aqueous solution at various concentrations from 0.001 to 1.0 M. effect SDS on morphology GO samples were characterized using field emission scanning electron microscopy (FESEM), energy dispersive X-ray, micro-Raman and UV-Vis spectroscopy. As evident by FESEM analysis, concentration does give obtained study. lowest is given which However,...

Abstrak – Kajian terhadap difraksi sinar-X struktur nano ZnO dengan waktu sonikasi yang berbeda telah dilakukan menggunakan metode hidrotermal-sonokimia. Variasi digunakan dalam kajian ini adalah 0 (tanpa sonikasi), 30, 45, dan 60 menit. Pola diplotkan dibandingkan untuk mengetahui struktur, kristalinitas kemurnian dihasilkan. Estimasi ukuran kristal juga dihitung persamaan Scherrer. Hasil penelitian menunjukkan bahwa disintesis tanpa proses memiliki rendah sedang berkisar dari 22,36 32,90...

Micro-nanorod structures of zinc oxide (ZnO) have been successfully synthesized via a simple and low-cost hydrothermal method. ZnO solutions with different concentrations 0.05 0.1 M were prepared using nitrate tetrahydrate hexamethylenetetramine precursors. They dissolved in aquades stirred before the process at 95 ° C for 4 hours an oven. Extensive characterizations scanning electron microscope (SEM) X-ray diffraction (XRD) conducted on powder samples. SEM results showed that hexagonally...

Graphene is a remarkable material with high electron mobility, good mechanical strength and almost transparent. In this paper, we review the available methods which are chemical vapour deposition, Hummers electrochemical exfoliation method for production of graphene. Among extensive studies in application graphene, supercapacitor has gained much attention nowadays. Therefore, also briefly graphene as electrodes devices.

Zinc oxide/carbon nanotubes (ZnO/CNTs) nanocomposite has been widely studied in the last few years due to their remarkable properties and versatile applications. Various methods have presented order enhance excellent of ZnO/CNTs nanocomposite. Here we reviewed several synthesis including single- multiple steps fabricate potential application field emission solar cell devices.

A self-custom-made ultrasound generator using piezoelectric probes has been constructed to reduce graphite layers via liquid-phase exfoliation into graphene oxide (GO) material.The frequency and the number of are varied with values 20 kHz, 30 kHz 35 1 probe, 2 3 probes, respectively.The solutions obtained from sonication process show a temperature increase 1°C or 2°C compared room temperature.Colour changes solution before sonication, after being left overnight also exhibited; that is dark,...

Zinc oxide (ZnO)/carbon spheres (CS) nanocomposites were successfully synthesised using waste engine oil as precursor for the CS production.ZnO nanorods grown sol-gel immersion method with MgZnO seeded catalyst and thermal chemical vapour deposition was used to synthesise CS.Different configurations of ZnO/CS structures prepared i.e.CScoated ZnO ZnO-coated CS.The composite samples analysed field emission scanning electron microscopy (FESEM), Energy-Dispersive X-ray (EDX), micro-Raman...

Th i s re e arc h a im i) to determine t he d ns y p r o f l nd ca c u g und n rg of qu um dot in two dimensions (2D) w it ar m on os ill or po ti us ng orbital-free un , and ii) er ef ec the il es q do . study mi nes gy functional that nds sp tial v b s. The total ons st k l, which is Tho – F pp x this case. ond T study. he  –e erac cr C ou on. formally solved ob spatial variables. nnot be so thus numerical method used ne Using electron density profiles, ground state quantum 2D d. energies...

Rapid progress in nanotechnology requires the production of novel nanomaterials. This study aims to synthesize Graphene Oxide (GO) via Liquid Exfoliation (LE) method using a self-custom-made tweeter piezoelectric system as ultrasound generator. Linear Alkylbenzena Sulfonate (LAS) surfactant contained commercial detergent is used assist exfoliation process. synthesis simple, inexpensive and may produce GO large quantity. Furthermore, effect sonication time on studied. The UV-Vis...

Merkuri (Hg) merupakan logam berat yang berbahaya bagi tubuh apabila keberadaannya melebihi ambang batas. Penentuan Hg telah banyak dilakukan salah satunya dengan menggunakan instrumen AAS (Atomic Absorption Spectrophotometry). Pada penelitian ini, analisis kandungan dari daun singkong SS (Solid Sampling Atomic Spectrophotometry) di mana sampel dalam bentuk padatan. Preparasi alat freeze dryer, sebuah pengering pada suhu rendah. Dari data percobaan diperoleh nilai akurasi sebesar 98,65% dan...

One of the strategies used to facilitate assessment and instructional media implementation is by using information communication technology in learning. The main objective this study was develop adaptive learning module with Android-based e-assessment. This employed DDD-E Model (Decide, Design, Develop, Evaluate). result android-based e-assessment multimedia applicable process. system Kotlin programming language. advantage that it integrated cloud service so can synchronize itself realtime...

Program Pengabdian kepada Masyarakat ini dilakukan dalam bentuk penyuluhan 60 orang siswa (peserta penyuluhan) SMAN 1 Talang Kelapa, Banyuasin Sumatera Selatan dengan tujuan untuk memperkenalkan peran ilmu fisika bidang kesehatan sehingga dapat meningkatkan minat peserta terhadap pembelajaran fisika. Materi terdiri atas 3 materi pokok yaitu pengenalan kesehatan/medis secara umum, serta radiasi dan alat-alat medis yang menggunakan prinsip Diakhir kegiatan, diberikan kuisioner mengetahui...

Carbon nanotubes (CNTs) were successfully synthesized using waste cooking palm oil (WCPO) as precursor by modified double-stages thermal chemical vapor deposition set-up. The total amount of 30 ml WCPO was consumed during the experiment with 5.33 wt% ferrocene catalyst. Precursor volume 2 injected continuously for different time intervals 5, 8, 10 and 12 minutes respectively. effect interval between injections on production CNTs systematically studied field emission scanning electron...

Carbon microspheres (C-mS) were successfully synthesized from used lube oil as the carbon source using thermal chemical vapor deposition method. The nature present of content in promoted growth C-mS. mixed with 5,33 wt% ferrocene catalyst was initially heated at 450 °C precursor furnace and then transferred into 900 by flow argon carrier gas. collected sample analyzed field emission scanning electron microscope (FESEM) micro-Raman spectroscopy. current-voltage ( IV ) profile C-mS also...

Abstract Various methods have been introduced to synthesize ZnO nanostructures, however as in most nanomaterial fabrication processes, these require sophisticated equipment and relatively high cost. Hydrothermal method has known a simple inexpensive route produce nanostructures. Unfortunately, this takes long production time order quality hence making it less efficient. In study, micro-nano structures successfully synthesized via fast low wattage microwave-assisted hydrothermal growth. X-ray...

Based on the 2014 Regional Autonomy Law, implementation of legal metrology in form calibration, re-calibration and supervision is now authority district/city. This study expected to provide information related general particularly importance implementing metrological regions. research was conducted with a qualitative approach method literature review case studies Bangka Selatan Regency. The low number Measuring, Dosing, Weighing Equipment Their (UTTP) Packaged Goods (BDKT) accordance...