Pyrolysis temperature-dependent electron transfer capacities of dissolved organic matters derived from wheat straw biochar

2019 ◽  
Vol 696 ◽  
pp. 133895 ◽  
Author(s):  
Beiping Zhang ◽  
Shaofeng Zhou ◽  
Lihua Zhou ◽  
Junlin Wen ◽  
Yong Yuan
Keyword(s):  
Electron Transfer ◽  
Wheat Straw ◽  
Pyrolysis Temperature ◽  
Temperature Dependent ◽  
Organic Matters ◽  
Dissolved Organic Matters ◽  
Electron Transfer Capacities

Temperature-Dependent Permeability of the Ligand Shell of PbS Quantum Dots Probed by Electron Transfer to Benzoquinone

2015 ◽  
Vol 6 (14) ◽  
pp. 2841-2846 ◽  
Author(s):  
Kenneth O. Aruda ◽  
Miriam Bohlmann Kunz ◽  
Mario Tagliazucchi ◽  
Emily A. Weiss
Keyword(s):  
Quantum Dots ◽  
Electron Transfer ◽  
Temperature Dependent ◽  
Ligand Shell ◽  
Pbs Quantum Dots

Impact of Graphitic Structures in Pyrogenic Carbon on Microbial Reduction of Ferrihydrite

2021 ◽  
Author(s):  
wentao yu ◽  
baoliang chen
Keyword(s):  
Electron Transfer ◽  
Pyrolysis Temperature ◽  
Shewanella Oneidensis ◽  
Exchange Capacity ◽  
Microbial Reduction ◽  
Systematic Evaluation ◽  
Extracellular Electron Transfer ◽  
Pyrogenic Carbon ◽  
The Impact

<p>Pyrogenic carbon plays important roles in microbial reduction of ferrihydrite by shuttling electrons in the extracellular electron transfer (EET) processes. Despite its importance, a full assessment on the impact of graphitic structures in pyrogenic carbon on microbial reduction of ferrihydrite has not been conducted. This study is a systematic evaluation of microbial ferrihydrite reduction by Shewanella oneidensis MR-1 in the presence of pyrogenic carbon with various graphitization extents. The results showed that the rates and extents of microbial ferrihydrite reduction were significantly enhanced in the presence of pyrogenic carbon, and increased with increasing pyrolysis temperature. Combined spectroscopic and electrochemical analyses suggested that the rate of microbial ferrihydrite reduction were dependent on the electrical conductivity of pyrogenic carbon (i.e., graphitization extent), rather than the electron exchange capacity. The key role of graphitic structures in pyrogenic carbon in mediating EET was further evidenced by larger microbial electrolysis current with pyrogenic carbon prepared at higher pyrolysis temperatures. This study provides new insights into the electron transfer in the pyrogenic carbon-mediated microbial reduction of ferrihydrite.</p>

Elektronentransfer und Ionenpaare, 15 [ 1– 3] Radikalanion und Radikal-Kontakt-Ionenpaare von Dimesityl-tetraketon / Electron Transfer and Ion Pairing, 15 [1-3] Radical Anion and Radical Ion Pairs of Dimesityl Tetraketone

1990 ◽  
Vol 45 (8) ◽  
pp. 1197-1204 ◽  
Author(s):  
H. Bock ◽  
P. Hänel ◽  
H.-F. Herrmann
Keyword(s):  
Electron Transfer ◽  
Radical Anion ◽  
Ion Pairs ◽  
Ion Pairing ◽  
Single Electron ◽  
Single Electron Transfer ◽  
Temperature Dependent ◽  
Contact Ion Pairs

The radical anion of dimesityltetraketone (ERed, I = -0.40 V) is easily generated in THF by potassium mirror/[2.2.2]-cryptand reduction. Its contact ion pairs with Na⊕, Cs⊕ and Ba⊕⊕ counter cations, prepared in THF solution by single electron transfer from the respective metals, are characterized by their ESR/ENDOR spectra, which exhibit temperature-dependent metal couplings of aNa⊕ = 0.061 mT (190 K), aCs⊕ = 0.021 mT (190 K), and aBa⊕⊕ = 0.145 mT (295 K).

Insights into the redox components of dissolved organic matters during stabilization process

2018 ◽  
Vol 25 (13) ◽  
pp. 13026-13034 ◽  
Author(s):  
Ying Yuan ◽  
Bei-Dou Xi ◽  
Xiao-Song He ◽  
Yan Ma ◽  
Hui Zhang ◽  
...  
Keyword(s):  
Organic Matters ◽  
Stabilization Process ◽  
Dissolved Organic Matters
Sign in / Sign up

Export Citation Format

Share Document