Growth and characterization of porous sp2-BN films with hollow spheres under hydrogen etching effect via borazane thermal CVD

2018 ◽  
Vol 452 ◽  
pp. 314-321 ◽  
Author(s):  
Yuanpeng Chen ◽  
Hongwei Liang ◽  
Qasim Abbas ◽  
Jun Liu ◽  
Jianjun Shi ◽  
...  
2009 ◽  
Author(s):  
Jing Sui ◽  
Lijuan Zhang ◽  
Jadranka Travas‐Sejdic ◽  
Paul A. Kilmartin

2003 ◽  
Vol 38 (5) ◽  
pp. 917-924 ◽  
Author(s):  
Caixia Song ◽  
Guohua Gu ◽  
Yusheng Lin ◽  
He Wang ◽  
Yu Guo ◽  
...  
Keyword(s):  

2019 ◽  
Vol 807 ◽  
pp. 1-10 ◽  
Author(s):  
Guang Xi Xu ◽  
Xiao Tong Sang ◽  
Jing Bao Lian ◽  
Nian Chu Wu ◽  
Xue Zhang

Eu3+ and Tb3+ ions singly activated Gd2O2S hollow spheres have been successfully synthesized via solvothermal method by using Gd (NO3)3, Eu (NO3)3, Tb (NO3)3 and thiourea as raw materials. Detailed characterization of the as-prepared samples were obtained by X-ray diffractometry (XRD), field emission scanning electron microscopy (FE-SEM), transmission electronic microscope (TEM) and photoluminescence (PL) spectroscopy. The results demonstrate that at 220 oC for 24 h, the molar ratio of thiourea/Gd3+ has no significant impact on the phase composition of Gd2O2S products. With the reaction time increased from 6 h to 24 h, the morphology of Gd2O2S samples changed from ellipsoidal to near-spheroidal structure, but still remained hollow structure. PL results show that the strongest emission peaks for Gd2O2S:Eu3+ and Gd2O2S:Tb3+ samples were centered at 625 nm and 545 nm, corresponding to the 5D0→7F2 transition of Eu3+ ions and 5D4→7F5 transition of Tb3+ ions, respectively. The quenching concentrations for Eu3+ and Tb3+ ions were 12% and 6%, which can be attributed to the exchange interaction for Eu3+ and Tb3+ ions, respectively.


2020 ◽  
Vol 12 (13) ◽  
pp. 1767-1778 ◽  
Author(s):  
Najmeh Farvardin ◽  
Shohreh Jahani ◽  
Maryam Kazemipour ◽  
Mohammad Mehdi Foroughi

Electrochemical sensor based on mesoporous CeO2 hollow sphere modified glassy carbon electrode for simultaneous detecting amlodipine, hydrochlorothiazide and valsartan was fabricated.


2016 ◽  
Author(s):  
Umesh Rizal ◽  
Soham Das ◽  
Dhruva Kumar ◽  
Bhabani S. Swain ◽  
Bibhu P. Swain

2011 ◽  
Vol 5 (7) ◽  
pp. 653-660 ◽  
Author(s):  
S. S. Samsudin ◽  
Z. M. Ariff ◽  
Z. Zakaria ◽  
A. A. Bakar

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