Nitrogen doped activated carbon/graphene with high nitrogen level: Green synthesis and thermo-electrical properties of its nanofluid

Bupleurum (Apiaceae) is widely used in traditional Chinese medicine to treat inflammatory and infectious diseases. Although roots are the only used parts in China, other countries use the whole plant. The yield and quality of Bupleurum depend mainly on fertilizers, especially nitrogen. The current study aimed to assess the relationship between the nitrogen fertilization level and the quality and metabolomic response of different parts (flowers, main shoots, lateral shoots and roots) of Bupleurum to three nitrogen fertilization levels (control group: 0 kg·ha−1; low-nitrogen group: 55 kg·ha−1; high-nitrogen group: 110 kg·ha−1). The results showed that a high nitrogen level increases Bupleurum yield and quality parameters only in aerial parts, especially flowers, but has no significant effect on roots. The HPLC method was exploited for simultaneous quantification of three saikosaponins (A, C and D), which are the main bioactive components in the plant. It was found that the total content of saikosaponins decreased with high nitrogen fertilization in roots but significantly increased in flowers. Moreover, nitrogen fertilizer promoted the content of saikosaponin A but inhibited saikosaponins C and saikosaponins D in most parts of the plant. To study the response of primary metabolites, we adopted gas chromatography–mass spectrometry (GC−MS) analysis; 84 metabolites were identified that were mostly up-regulated with a high nitrogen level in flowers but down-regulated in roots. Four differential metabolites—D-fructose, lactose, ether and glycerol—were recognized as key metabolites in Bupleurum under nitrogen fertilization. Meanwhile, The Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment results explained that the impact of nitrogen fertilization on Bupleurum was attributed to the C-metabolism, N-metabolism, and lipids metabolism. This research put forward new insights into potential mechanisms and the relationship between the quality and yield of Bupleurum and nitrogen fertilization.

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Excellent Electrochemical Performance of Potassium Ion Capacitor Achieved by a High Nitrogen Doped Activated Carbon

Journal of The Electrochemical Society ◽

10.1149/1945-7111/ab6a84 ◽

2020 ◽

Vol 167 (5) ◽

pp. 050506 ◽

Cited By ~ 1

Author(s):

Zhi Chen ◽

Wenlei Li ◽

Jian Yang ◽

Jiaxuan Liao ◽

Cheng Chen ◽

...

Keyword(s):

Activated Carbon ◽

Electrochemical Performance ◽

Potassium Ion ◽

High Nitrogen ◽

Nitrogen Doped ◽

Excellent Electrochemical Performance

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Low-temperature induced floret sterility in the rice cultivars Calrose and Inga as influenced by nitrogen supply

Australian Journal of Experimental Agriculture ◽

10.1071/ea9840255 ◽

1984 ◽

Vol 24 (125) ◽

pp. 255 ◽

Cited By ~ 20

Author(s):

DP Heenan

Keyword(s):

Low Temperature ◽

Pollen Development ◽

Nitrogen Supply ◽

Nitrogen Level ◽

Rice Cultivars ◽

High Nitrogen ◽

Nitrogen Levels ◽

High Nitrogen Level ◽

Temperature Controlled

An experiment in temperature-controlled glasshouse chambers at Yanco Agricultural Institute examined floret sterility in lnga and Calrose rice induced by low temperature and high nitrogen level. Low temperature (12�C) ,for 4 d during microsporogenesis and anthesis produced considerable sterility in both cultivars; lnga was more sensitive than Calrose. Sensitivity was greatest when florets from the mid-section of the panicle were passing through the early microspore phase of pollen development. At both stages, the amount of low-temperature induced sterility was increased by high nitrogen supply. In the absence of low temperature, high nitrogen levels induced sterility in lnga only.

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Molybdenum nutrition of rice under low and high nitrogen level

Plant and Soil ◽

10.1007/bf00015931 ◽

1977 ◽

Vol 46 (3) ◽

pp. 681-685 ◽

Cited By ~ 6

Author(s):

D. K. Das Gupta ◽

P. Basuchaudhuri

Keyword(s):

Nitrogen Level ◽

High Nitrogen ◽

High Nitrogen Level

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Nitrogen Metabolism During Storage in Relation to the Breakdown of Apples. I. Changes in protein nitrogen level in relation to incidence

Australian Journal of Agricultural Research ◽

10.1071/ar9670271 ◽

1967 ◽

Vol 18 (2) ◽

pp. 271 ◽

Cited By ~ 11

Author(s):

D Martin ◽

TL Lewis ◽

y Cern

Keyword(s):

Nitrogen Content ◽

Water Loss ◽

Inverse Relationship ◽

Nitrogen Level ◽

High Nitrogen ◽

Protein Nitrogen ◽

Cool Storage ◽

High Nitrogen Level ◽

Storage Atmosphere ◽

Increased Susceptibility

Protein nitrogen content was followed in fruits of four apple varieties during cool storage under conditions designed to induce different rates of water loss. Increase in protein nitrogen content during cool storage did not appear to be related to the development of breakdown. High nitrogen level in the fruit, high relative humidity in the storage atmosphere, and advanced maturity at harvest all increased susceptibility to breakdown, but only the first of these factors influenced the protein nitrogen level. An inverse relationship between percentage water loss and breakdown incidence was demonstrated.

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Influence of nitrogen supply on spring barley productivity and nitrate reductase activity

Acta Agrobotanica ◽

10.5586/aa.1982.019 ◽

2013 ◽

Vol 35 (2) ◽

pp. 191-203

Author(s):

U. Wojcieska ◽

E. Wolska ◽

M. Król

Keyword(s):

Nitrate Reductase ◽

Nitrate Reductase Activity ◽

Reductase Activity ◽

Spring Barley ◽

Nitrogen Level ◽

High Nitrogen ◽

Yield Increase ◽

Lateral Shoots ◽

Yield Structure ◽

High Nitrogen Level

The aim of the present study was to obtain some informations on the productivity of four chosen barley varieties growing at low and high nitrogen level. Some parameters of the yield structure and nitrate reductase activity were taken into consideration. It was found that there exist some differences in the yield between the compared varieties and some differences in their reaction to a high N level in the soil. The grain yield increase of the plants treated with high nitrogen doses was above all the result of the increase in dry matter of the lateral shoots and in leaf area. Distinct increase in the number of grains per ear and 1000-grains weight was also observed. The amount of reduced nitrogen collected during the growth season depended, in part, on the nitrate reductase activity and in part on the amount of the enzyme present in the plant. A rise of the nitrogen level caused an increase in nitrate reductase activity, in all varieties. The different influence of nitrogen on the growth of green organs in the compared varieties caused differences in the amount of the enzyme present in the plants and in protein yields.

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Nitrogen-Doped Graphene Iron-Based Particle Electrode Outperforms Activated Carbon in Three-Dimensional Electrochemical Water Treatment Systems

Water ◽

10.3390/w12113121 ◽

2020 ◽

Vol 12 (11) ◽

pp. 3121

Author(s):

Hosna Ghanbarlou ◽

Nikoline Loklindt Pedersen ◽

Morten Enggrob Simonsen ◽

Jens Muff

Keyword(s):

Activated Carbon ◽

Three Dimensional ◽

Cell Voltage ◽

Reduction Reaction ◽

Process Data ◽

Nitrogen Doped ◽

Pesticide Removal ◽

Optimal Value ◽

Nitrogen Doped Graphene ◽

Doped Graphene

The synergy between electrochemical oxidation and adsorption on particle electrodes was investigated in three-dimensional (3D) systems for p-nitrosodimethylaniline (RNO) decolorization and pesticide removal. A comparison was made between granular activated carbon (GAC) and a novel synthesized nitrogen-doped graphene-based particle electrode (NCPE). Experiments on RNO decolorization show that the synergy parameter of the 3D-NCPE system was improved 3000 times compared to the studied 3D-GAC system. This was due to the specific nanostructure and composition of the NCPE material. Nitrogen-doped graphene triggered an oxygen reduction reaction, producing hydrogen peroxide that simultaneously catalyzed on iron sites of the NCPEs to hydroxyl radicals following the electro-Fenton (EF) process. Data showed that in the experimental setup used for the study, the applied cell voltage required for the optimal value of the synergy parameter could be lowered to 5V in the 3D-NCPEs process, which is significantly better than the 15–20 V needed for synergy to be found in the 3D-GAC process. Compared to previous studies with 3D-GAC, the removal of pesticides 2,6 dichlorobenzamide (BAM), 2-methyl-4-chlorophenoxyaceticacid (MCPA), and methylchlorophenoxypropionic acid (MCPP) was also enhanced in the 3D-NCPE system.

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Correction: Green synthesis of nitrogen-doped multiporous carbons for oxygen reduction reaction using water-caltrop shells and eggshell waste

RSC Advances ◽

10.1039/d1ra90116h ◽

2021 ◽

Vol 11 (30) ◽

pp. 18408-18408

Author(s):

Chun-Han Hsu ◽

Zheng-Bang Pan ◽

Hau-Ting Qu ◽

Chuan-Ren Chen ◽

Hong-Ping Lin ◽

...

Keyword(s):

Oxygen Reduction Reaction ◽

Green Synthesis ◽

Oxygen Reduction ◽

Reduction Reaction ◽

Nitrogen Doped ◽

Eggshell Waste

Correction for ‘Green synthesis of nitrogen-doped multiporous carbons for oxygen reduction reaction using water-caltrop shells and eggshell waste’ by Chun-Han Hsu et al., RSC Adv., 2021, 11, 15738–15747. DOI: 10.1039/D1RA02100A.

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