13 Questions 13 Answers 0 Followers
Questions related from Bruno Pescara
Dear all, I need to perform isotopic determination of Kr-85 in a gas matrix. Unfortunately, I'm no expert in the field, and I'm struggling to find which Mass spectrometer I should purchase. I...
12 January 2023 6,902 2 View
Good morning guys, Here's a pickle for you! Quick intro: I'm a new employee, and the company where I work needed a mass spectrometer (MS). They instructed my predecessor to buy one. Instead, he...
27 October 2022 3,129 0 View
Hi everyone, I hope this message finds you all well. I've recently been put in charge of a Residual Gas Analyzer, and it is the first time I have dealt with high vacuum and this type of...
06 September 2022 3,535 1 View
Dear all, Recently I have been working on direct ligand exchange on the surface of Ge nanoparticles. The experimental part is done, now I'm trying to rationalize the observed efficiency of these...
20 March 2021 5,564 1 View
Dear All, I've been synthesizing Ge nanoparticles using OAm as a solvent/capping agent. Now I'm in the process of assigning the FTIR peaks of my samples. I've assigned almost every peak in the...
03 November 2020 4,468 2 View
Dear all, I'm stuck with a technical problem. I have developed a working air-free synthesis, in which products are relatively stable and be exposed to small quantities of oxygen. Now, based on...
24 September 2020 6,875 3 View
Dear all, I'm trying to improve the quality, monodispersity, and size control of my Ge nanoparticle, which are coated with oleylamine as native ligand (Ge@Oam). Among the different options i'm...
19 July 2019 8,307 1 View
Dear all, Intro: After a hell of a lot of work, we learned a great deal of info, and finally finish to set up our own Ge NPs colloidal synthesis, which unluckily for me requires the amine as...
24 January 2019 7,732 3 View
Dear all, I'm performing colloidal syntheses of Si and Ge nano-particles (NPs). Lately most of my result (XRD, EELS, Raman) are strongly effected by the presence of Nickel in my solution. The Ni...
28 March 2018 5,393 6 View
Dear all, Recently while performing a synthesis I've recorded a UV-Vis spectrum of a mixture of hexadecyl-amine (HDA) and sulfur, after heating treatment (please find it in the attachments, bright...
09 March 2018 6,910 5 View
Dear all, Recently i've been challenged by a question. In a paper i'm writing i'm reporting the synthesis of a-Ge quantum dots, in which i observe a small blue shift along with particle shrinking....
06 December 2017 5,756 5 View
Dear all, I´m currently synthesizing pure a-Ge NP (c-Ge only present in an amount around 2%) with a long aliphatic chain capping agent. the presence of this ligand on the surface makes the TEM...
25 April 2017 9,513 1 View
Dear All, I’ve been asked to prepare a critical review on the topic of “nanostructured germanium”. As a chemist working on the field since only 4-5 years, I feel I have a quite partial and biased...
01 January 1970 1,146 3 View
