Transmission electron microscope

Nano-hydroxyapatite/starch composite was synthesized using in situ precipitation. Starch concentration effect on the structure of composite was examined. Characterization of the obtained samples, The X-ray diffraction and Fourier transform infrared spectroscopy demonstrated the purity of the formed nano-HA in the starch matrix. Morphology studies of the samples, checked by field emission scanning electron microscope and transmission electron microscope, show the effects of starch on the size, shape, and morphology of hydroxyapatite nanoparticles.

6p dianmotminh02 03-05-2024 6 1   Download

Đặc tính của sản phẩm cuối được đánh giá bằng các phương pháp phân tích hóa lý hiện đại như xác định diện tích bề mặt riêng BET (Brunauer-Emmett-Teller), kính hiển vi điện tử quét SEM (Scanning electron microscopy), kính hiển vi điện tử truyền qua HR-TEM (High-resolution Transmission Electron Microscope), phân tích nhiệt trọng trường TGA (Thermogravimetric Analysis).

5p viirenerosenfeld 26-05-2022 27 2   Download

Green synthesis method is being increasingly used in the development of safe, stable, and eco-friendly nanostructures with biological resources. In this study, extracellular and intracellular synthesis of gold nanoparticles (AuNPs) was carried out using green algae Chlorella sorokiniana Shihira & R.W. Fresh algae were isolated and identified from Musaözü Pond located in the province of Eskişehir and then extraction process were performed.

18p thiencuuchu 27-11-2021 8 2   Download

Pirochromite (MgCr2O4) nanoparticles were successfully prepared in this study. During synthesis of the pirochromite nanoparticles, a sol-gel was prepared by using magnesium acetate and potassium dichromate as magnesium and chromium sources and by using stearic acid as the network.

8p tocectocec 25-05-2020 7 2   Download

In the Pt/
-Al2O3 catalysts, the distribution of uniform, small particle-size Pt metal on the carrier with high surface area of metal will result in high catalytic activities and will economize noble metals. The distribution of metal depends on the technology of preparation and postpreparation. The influences of the impregnating, drying, calcining and reducing on the distribution of metal have been studied using by physic methods, scan electronic microscope (SEM), transmission electronic microscope (TEM), and the hydrogen distribution has been measured by the method of hydrogen absorption.

5p uocvong01 24-09-2015 54 6   Download