Design and construction of a semi-cycle system of oxygen supplied intensification using hydrogen peroxide for high-performance glucose oxidation

2022 ◽  
Vol 519 ◽  
pp. 112119
Author(s):  
Caixia Cui ◽  
Mengyuan Kong ◽  
Tingting Xia ◽  
Chenyan Zhou ◽  
Hong Ming
Nanomaterials ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 202
Author(s):  
Yexin Dai ◽  
Jie Ding ◽  
Jingyu Li ◽  
Yang Li ◽  
Yanping Zong ◽  
...  

In this work, reduced graphene oxide (rGO) nanocomposites doped with nitrogen (N), sulfur (S) and transitional metal (Ni, Co, Fe) were synthesized by using a simple one-step in-situ hydrothermal approach. Electrochemical characterization showed that rGO-NS-Ni was the most prominent catalyst for glucose oxidation. The current density of the direct glucose alkaline fuel cell (DGAFC) with rGO-NS-Ni as the anode catalyst reached 148.0 mA/cm2, which was 40.82% higher than the blank group. The DGAFC exhibited a maximum power density of 48 W/m2, which was more than 2.08 folds than that of blank group. The catalyst was further characterized by SEM, XPS and Raman. It was speculated that the boosted performance was due to the synergistic effect of N, S-doped rGO and the metallic redox couples, (Ni2+/Ni3+, Co2+/Co3+ and Fe2+/Fe3+), which created more active sites and accelerated electron transfer. This research can provide insights for the development of environmental benign catalysts and promote the application of the DGAFCs.


RSC Advances ◽  
2014 ◽  
Vol 4 (110) ◽  
pp. 65031-65034 ◽  
Author(s):  
L. An ◽  
T. S. Zhao ◽  
X. L. Zhou ◽  
L. Wei ◽  
X. H. Yan

We propose to create the cathode potential by introducing a redox couple to the cathode while using hydrogen peroxide to chemically charge the redox ions, which eliminates the mixed potential associated with direct reduction of hydrogen peroxide.


2021 ◽  
Vol 171 ◽  
pp. 113900
Author(s):  
Lu Luo ◽  
Yalan Zhou ◽  
Wen Yan ◽  
Lingcong Luo ◽  
Jianping Deng ◽  
...  

2007 ◽  
Vol 61 (12) ◽  
pp. 1481-1493 ◽  
Author(s):  
Kengo Magara ◽  
Tsutomu Ikeda ◽  
Tomoko Sugimoto ◽  
Shuji Hosoya

2017 ◽  
Vol 13 ◽  
pp. 40-48 ◽  
Author(s):  
M. Manikandan ◽  
S. Dhanuskodi ◽  
N. Maheswari ◽  
G. Muralidharan ◽  
C. Revathi ◽  
...  

2017 ◽  
Vol 244 ◽  
pp. 482-491 ◽  
Author(s):  
Juan He ◽  
Jaka Sunarso ◽  
Yinlong Zhu ◽  
Yijun Zhong ◽  
Jie Miao ◽  
...  

Author(s):  
Te-Fu L. Ho ◽  
James R. Bolton ◽  
Ewa Lipczynska-Kochany

AbstractA broadband method has been applied to determine the quantum yields for the photochemical removal of three common pollutants: phenol, 4-chlorophenol and N-nitrosodimethylamine (NDMA) in dilute aqueous solution. Flash photolysis (xenon flash lamps) was used to cause a significant amount of photolysis without photolyzing intermediates. The analysis of reactant depletion following a single flash was carried out by high- performance liquid chromatography (HPLC) or UV/visible absorption spectroscopy. The method for determining quantum-yields employed p-benzoquinone as an actinometer and was validated by determining the average (200-400 nm) quantum yield for the generation of hydroxyl radicals from the photolysis of hydrogen peroxide (0.90 ± 0.10) and the quantum yields for the photolysis of phenol (0.13 ± 0.02) and 4-chlorophenol (0.24 ± 0.04). The values determined agree very well with the literature ones obtained with monochromatic radiation. The quantum yield for the direct photolysis of NDMA was found to be 0.11 ± 0.03 at neutral pH and 0.27 ± 0.02 at pH 2-4. Under conditions where hydrogen peroxide is the principal absorber, the NDMA quantum yield is 0.32 ± 0.04, independent of pH in the range 2-8.


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