scholarly journals A h-BCN for Electrochemical Sensor of Dopamine and Uric Acid

2020 ◽  
Vol 2020 ◽  
pp. 1-9 ◽  
Author(s):  
Yun-Shuai Bi ◽  
Bo Liu ◽  
Xu-Ying Liu ◽  
Ying Qin ◽  
Ben-Xue Zou

A hexagonal boron carbon nitride hybrid (h-BCN) is developed by in situ high-temperature solid-state reaction and subsequent chemical reduction with hydrazine. The XRD and TEM results show that the h-BCN features interlayered structures with two characteristic d-spacing of 0.33 and 0.21 nm. The obtained h-BCN exhibits significant electrochemical sensor for dopamine and uric acid. The cyclic voltammetric and amperometric experiments revealed a good linear relationship between current densities and concentrations of dopamine (DA) of 10-300 μM and uric acid (UA) of 10-500 μM, with high sensitivities of 0.14 μA/μM and 0.32 μA/μM and detection limits of 5 μM and 2 μM, respectively.

AIChE Journal ◽  
2021 ◽  
Author(s):  
Jing Luo ◽  
Chao Wang ◽  
Jixing Liu ◽  
Yanchen Wei ◽  
Yanhong Chao ◽  
...  

Science ◽  
2021 ◽  
Vol 371 (6525) ◽  
pp. 138.6-139
Author(s):  
Phil Szuromi

Ceramics ◽  
2021 ◽  
Vol 4 (2) ◽  
pp. 135-147
Author(s):  
Hanuš Seiner ◽  
Michaela Janovská ◽  
Martin Koller ◽  
Petr Sedlák ◽  
Kateřina Seinerová ◽  
...  

Resonant ultrasound spectroscopy was used to determine elastic constants and internal friction parameters of bulk nanoparticle-based ceramic materials compacted by spark plasma sintering. Boron nitride-based and boron carbon nitride-based materials were studied, and the results were compared with similar bulk materials prepared from graphene nanoplatelets. The results showed that such nanoparticle-based materials can be strongly anisotropic, and can have very different elastic constants depending on the nanoparticles used. From the temperature dependence of the internal friction parameters, the activation energy for sliding of the individual monolayers along each other was determined for each material. Very similar values of the activation energy were obtained for boron nitride, boron carbon nitride, and graphene, ranging from 15 to 17 kJ/mol.


2007 ◽  
Vol 119 ◽  
pp. 291-294
Author(s):  
Ajayan Vinu ◽  
Srinivasan Anandan ◽  
Narasimhan Gokularkrishnan ◽  
Pavuluri Srinivasu ◽  
Toshiyuki Mori ◽  
...  

Mesoporous carbon nitride materials have been synthesized using SBA-15 by pore filling technique whereas mesoporous boron nitride and boron carbon nitride have been prepared by elemental substitution technique using mesoporous carbon as template. The obtained materials have been unambiguously characterized by sophisticated techniques such as XRD, HRTEM, EELS, XPS, FT-IR and N2 adsorption. The textural parameters of the materials are quite higher as compared to the respective nonporous nitrides. These materials could offer great potential for the applications, such as catalytic supports, gas storage, biomolecule adsorption and drug delivery.


2018 ◽  
Vol 2 (1) ◽  
pp. 79-93 ◽  
Author(s):  
Moustafa M. Zagho ◽  
Hana D. Dawoud ◽  
Nasr Bensalah ◽  
T. M. Altahtamouni

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