Bio-inspired chitosan-heme-vitamin B12-derived Fe–Co bimetallic-doped mesoporous carbons for efficiently electro-activating oxygen

2019 ◽  
Vol 48 (7) ◽  
pp. 2338-2344 ◽  
Author(s):  
Zifan Ma ◽  
Longdi Xu ◽  
Luyao Liu ◽  
Luyao Wang ◽  
Xiaoying Zhang ◽  
...  
Keyword(s):  
Vitamin B12 ◽  
Mesoporous Carbon ◽  
Oxygen Electroreduction ◽  
Molecular Structures ◽  
Vitamin B ◽  
Mesoporous Carbons ◽  
Co Doped

Biomass-derived chitosan-heme-vitamin B12 with definitive molecular structures was converted to bimetallic Fe–Co-doped mesoporous carbon for efficient oxygen electroreduction.

Cannabis sativa-derived carbon dots co-doped with N–S: highly efficient nanosensors for temperature and vitamin B12

2019 ◽  
Vol 43 (43) ◽  
pp. 17058-17068 ◽  
Author(s):  
Pranav Tiwari ◽  
Navpreet Kaur ◽  
Vinay Sharma ◽  
Hyeonggon Kang ◽  
Jamal Uddin ◽  
...  
Keyword(s):  
Vitamin B12 ◽  
Carbon Dots ◽  
Cannabis Sativa ◽  
Vitamin B ◽  
Highly Efficient ◽  
Co Doped

Cannabis sativa-derived carbon dots as efficient nanosensors for temperature and vitamin B12.

Mesoporous carbon derived from vitamin B12: a high-performance bifunctional catalyst for imine formation

2016 ◽  
Vol 52 (3) ◽  
pp. 481-484 ◽  
Author(s):  
Bo Chen ◽  
Sensen Shang ◽  
Lianyue Wang ◽  
Yi Zhang ◽  
Shuang Gao
Keyword(s):  
Vitamin B12 ◽  
Organic Synthesis ◽  
Mesoporous Carbon ◽  
High Performance ◽  
Cross Coupling ◽  
Bifunctional Catalyst ◽  
The Self ◽  
Primary Amines ◽  
Vitamin B ◽  
First Time

Mesoporous carbon derived from natural vitamin B12 is applied for the first time in organic synthesis and exhibits exceptionally high dual activity for imine formation via the cross-coupling of alcohols with amines and the self-coupling of primary amines.

Preparation and Characterization of Mesoporous Carbon Materials Based on Hard Coal-Tar Pitch

2013 ◽  
Vol 750-752 ◽  
pp. 1363-1368 ◽  
Author(s):  
Gui Ying Xu ◽  
Jin Feng Bai ◽  
Jian Zhang ◽  
Li Hua Zhang ◽  
Rui Ni ◽  
...  
Keyword(s):  
Carbon Source ◽  
Specific Surface ◽  
Mesoporous Carbon ◽  
Coal Tar ◽  
Hard Coal ◽  
Coal Pitch ◽  
Vitamin B ◽  
Mesoporous Carbons ◽  
Mass Ratio ◽  
Step Method

Mesoporous carbons were prepared by one step method using hard coal pitch as carbon source, in which magnesium oxide was adopted as template. The adsorption value of vitamin B12, specific surface and pore size distribution, surface topography of mesoporous carbons were tested by spectrophotometer, specific surface analyzer and scanning electron microscopy. The results showed that the vitamin B12 absorption value on mesoporous carbon could be improved with suitable carbonization temperature and mass ratio of template agent to carbon source. The maximum value achieved to 103.82mg/g when the mass ratio of MgO to modified pitch was 8:2.

scholarly journals Molecularly imprinted membrane for transport of urea, creatinine, and vitamin B12 as a hemodialysis candidate membrane

2021 ◽  
Vol 19 (1) ◽  
pp. 806-817
Author(s):  
Muhammad Cholid Djunaidi ◽  
Nabilah Anindita Febriola ◽  
Abdul Haris
Keyword(s):  
Polyethylene Glycol ◽  
Vitamin B12 ◽  
Kidney Function ◽  
Cross Linking ◽  
Vitamin B ◽  
Molecularly Imprinted ◽  
Selective Transport ◽  
Molecularly Imprinted Membrane ◽  
Better Than ◽  
Imprinted Membrane

Abstract High levels of urea and creatinine in the blood are a sign of decreased kidney function. To remove these substances from the blood, hemodialysis which utilizes membranes could be used. In this study, a molecularly imprinted membrane (MIM) was synthesized for the selective transport of urea. The synthesis is initiated with the polymerization of eugenol into polyeugenol and then into polyeugenoxy acetate (PA). The PA is then contacted with urea and then used as the functional polymer in the synthesis of MIM with polysulfone as the membrane base, and polyethylene glycol as the cross-linking agent. The result was later analyzed with FTIR and SEM-EDX. The membrane is then used in the transport of urea, creatinine, and vitamin B12 and then compared with the non-imprinted membrane (NIM) performance. By using UV-Vis spectrophotometry, the results showed that the membrane with 10 h heating variation is able to transport more urea and is more selective than NIM; this proves that the urea template on the MIM enables it to recognize urea molecules better than creatinine and vitamin B12. The order of transport from the best results is urea > creatinine > vitamin B12.

scholarly journals Three-dimensional tellurium and nitrogen Co-doped mesoporous carbons for high performance supercapacitors

RSC Advances ◽  
2021 ◽  
Vol 11 (15) ◽  
pp. 8628-8635
Author(s):  
Chang Ki Kim ◽  
Jung-Min Ji ◽  
M. Aftabuzzaman ◽  
Hwan Kyu Kim
Keyword(s):  
High Performance ◽  
Carbon Materials ◽  
Synergetic Effect ◽  
Three Dimensional ◽  
Mesoporous Carbons ◽  
Capacitive Performance ◽  
Nitrogen Doped ◽  
Carbon Based Nanomaterials ◽  
Nitrogen Doped Carbon ◽  
Co Doped

The incorporation of the Te element into nitrogen-doped carbon-based nanomaterials is a good strategy to improve the capacitive performance of carbon materials and the incorporation of two types of atoms improves the overall capacitive performance of the materials due to a synergetic effect.

Röntgenspektroskopische Bestimmung der Wertigkeit des Kobalts im Vitamin B12

1954 ◽  
Vol 9 (8) ◽  
pp. 509-513 ◽  
Author(s):  
G. Boehm ◽  
A. Faessler ◽  
G. Rittmayer
Keyword(s):  
Vitamin B12 ◽  
Vitamin B

Mit einem fokussierenden Spektrographen großer Dispersion wird die Lage der K-Röntgen-absorptionskante des Kobalts in verschiedenen Verbindungen untersucht. Die Ergebnisse zeigen, daß es möglich ist, durch Bestimmung der Kantenlage die Wertigkeit des Kobalts in einer Verbindung zu bestimmen. Die Methode gestattet den eindeutigen Nachweis, daß das Kobalt im Vitamin B12 dreiwertig ist.

Graphene-Supported Mesoporous Carbons Prepared with Thermally Removable Templates as Efficient Catalysts for Oxygen Electroreduction

Small ◽  
2016 ◽  
Vol 12 (14) ◽  
pp. 1900-1908 ◽  
Author(s):  
Wenhan Niu ◽  
Ligui Li ◽  
Ji Liu ◽  
Nan Wang ◽  
Wei Li ◽  
...  
Keyword(s):  
Oxygen Electroreduction ◽  
Mesoporous Carbons

scholarly journals Effect of Vitamin-B1 and Vitamin-B12 on the Growth and Carotenoid Content of Haematococcus pluvialis CH-1

2015 ◽  
Vol 7 (9) ◽  
pp. 709-711
Author(s):  
Li-Xin Li ◽  
Zhi-Wei Song ◽  
Shun-Shan Duan ◽  
Ke-Jie Luo ◽  
Ting Li ◽  
...  
Keyword(s):  
Vitamin B12 ◽  
Haematococcus Pluvialis ◽  
Carotenoid Content ◽  
Vitamin B
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