scholarly journals The one-step preparation of green-emission carbon dots based on the deactivator-reducing reagent synergistic effect and the study on their luminescence mechanism

RSC Advances ◽  
2018 ◽  
Vol 8 (36) ◽  
pp. 20016-20024 ◽  
Author(s):  
Chunjin Wei ◽  
Jun Li ◽  
Xincai Xiao ◽  
Tong Yue ◽  
Dan Zhao
Keyword(s):  
Citric Acid ◽  
Synergistic Effect ◽  
Carbon Dots ◽  
Green Emission ◽  
High Quality ◽  
One Step ◽  
The One

This paper reports the synthesis of high-quality green-emission carbon dots based on the synergistic effect between the deactivator (polyethyleneimine) and the reducing reagent (citric acid).

Multifunctional water-soluble luminescent carbon dots for imaging and Hg2+ sensing

2014 ◽  
Vol 2 (40) ◽  
pp. 6995-6999 ◽  
Author(s):  
Yanling Zhai ◽  
Zhijun Zhu ◽  
Chengzhou Zhu ◽  
Jiangtao Ren ◽  
Erkang Wang ◽  
...  
Keyword(s):  
Citric Acid ◽  
Carbon Dots ◽  
Large Scale ◽  
Water Soluble ◽  
One Step ◽  
Ingenious Method

We propose an ingenious method for large-scale fabrication of water-soluble photoluminescent carbon dots (CDs) by a one-step microwave route in the presence of citric acid and ethylenediamine.

Rational design of high quality citric acid-derived carbon dots by selecting efficient chemical structure motifs

Carbon ◽  
2017 ◽  
Vol 112 ◽  
pp. 131-141 ◽  
Author(s):  
Fang Gao ◽  
Shiyao Ma ◽  
Jun Li ◽  
Kang Dai ◽  
Xincai Xiao ◽  
...  
Keyword(s):  
Citric Acid ◽  
Carbon Dots ◽  
Chemical Structure ◽  
Rational Design ◽  
High Quality

Nitrogen-doped carbon dots as fluorescent probe for detection of curcumin based on the inner filter effect

RSC Advances ◽  
2015 ◽  
Vol 5 (115) ◽  
pp. 95054-95060 ◽  
Author(s):  
Qingyan Zhang ◽  
Caihong Zhang ◽  
Zengbo Li ◽  
Jinyin Ge ◽  
Chenzhong Li ◽  
...  
Keyword(s):  
Citric Acid ◽  
Carbon Source ◽  
Nitrogen Source ◽  
Carbon Dots ◽  
Inner Filter Effect ◽  
Nitrogen Doped ◽  
Filter Effect ◽  
One Step ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon

A facile, economical and green one-step hydrothermal method for N-doped CDs was presented by using citric acid as carbon source and urea as nitrogen source. The fluorescence of N-doped CDs quenched dramatically from curcumin via inner filter effect.

Synergistic Toughening Effects of Nano-CaCO3 and POE on Ternary-Phase Polypropylene Nanocomposites

2007 ◽  
Vol 334-335 ◽  
pp. 553-556 ◽  
Author(s):  
Min Zhi Rong ◽  
Ming Qiu Zhang ◽  
Chuan Guo Ma
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Synergistic Effect ◽  
Ternary Phase ◽  
Binary Blends ◽  
Step Process ◽  
Phase Structures ◽  
Polypropylene Nanocomposites ◽  
One Step ◽  
The One

Microstructure and mechanical properties of ternary PP/POE/nano-CaCO3 composites were investigated. Two different phase structures were obtained mainly by adjusting processing sequence. The one-step process led to the isolated distribution of elastomer and CaCO3 particles in PP matrix, while the two-step one attained an encapsulated microstructure. In comparison with binary blends of PP/POE or pure PP, toughness of the ternary composites was significantly increased. Meanwhile, their stiffness and tensile strength kept nearly unchanged or slightly enhanced, implying that there is a synergistic effect between nano-CaCO3 and POE components.

scholarly journals Feasibility of the Bio-Mobilization of Rare Earth Elements from Bauxite Residual Red Mud

2021 ◽  
Vol 6 (1) ◽  
pp. 5
Author(s):  
Sadia Ilyas ◽  
Hyunjung Kim ◽  
Rajiv R. Srivastava
Keyword(s):  
Rare Earth ◽  
Citric Acid ◽  
Oxalic Acid ◽  
Red Mud ◽  
Penicillium Chrysogenum ◽  
The Other ◽  
Mode 2 ◽  
One Step ◽  
Mode 3 ◽  
The One

The present work was conducted to evaluate the bioleaching feasibility of red mud with Penicillium chrysogenum strain KBS3 in the presence of glucose, sawdust, and molasses as a substrate and in various leaching modes. The one-step bioleaching system involved 12 mM citric acid, 2.5 mM oxalic acid, 1.8 mM tartaric acid, and 1162 mM gluconic acid, with glucose as the substrate. The biogenic acid production in the two-step bioleaching system involved 15 mM, 1 mM, 0.5 mM, and 152 mM, respectively, and in the spent-medium bioleaching system, it was 63 mM, 29 mM, 23 mM, and 3 mM, respectively, using glucose as the substrate and a pulp density of 3%. The concomitant bio-mobilization of rare earths investigated under different modes were observed to be: 79% Y, 28% La, and 28% Ce in one-step (mode 1) bioleaching; 63% Y, and 28% both La and Ce in the spent-medium (mode 2) bioleaching; and 67% Y, 20% La, and 15% Ce in a two-step (mode 3) bioleaching. On the other hand, the bio-mobilization of rare eaths with molasses as the substrate was found to be: 57% Y, 13.5% La, and 12.7% Ce in mode 4 bioleaching; 57% Y, 14% La, and 12% Ce in mode 5 bioleaching; and 49% Y, 6.3% La, and 2.9% Ce in mode 6 bioleaching of the red mud. Insignificant results were observed using sawdust as the substrate.

The interlocked in situ fabrication of graphene@prussian blue nanocomposite as high-performance supercapacitor

2018 ◽  
Vol 47 (37) ◽  
pp. 13126-13134 ◽  
Author(s):  
Shi-Cheng Wang ◽  
Minli Gu ◽  
Luqing Pan ◽  
Junfeng Xu ◽  
Lei Han ◽  
...  
Keyword(s):  
Prussian Blue ◽  
High Performance ◽  
Great Promise ◽  
High Quality ◽  
In Situ Fabrication ◽  
Excellent Electrochemical Performance ◽  
One Step ◽  
The One ◽  
Method Show

High-quality graphene@prussian blue (G@PB) nanocomposite sheets fabricated via the one-step in situ hydrothermal method show great promise for energy-storage hybrid electrodes with excellent electrochemical performance.

Influence of sulfur doping on the molecular fluorophore and synergistic effect for citric acid carbon dots

2021 ◽  
Author(s):  
Guohua Cao ◽  
Zhifei Wei ◽  
Yuehong Yin ◽  
Lige Fu ◽  
Yukun Liu ◽  
...  
Keyword(s):  
Citric Acid ◽  
Synergistic Effect ◽  
Carbon Dots ◽  
Sulfur Doping

A Ratiometric Fluorescent Probe Based on Carbon Dots and Bimetallic Nanoclusters for the Assay of Copper Gluconate and Copper Sulfate

NANO ◽  
2021 ◽  
pp. 2150114
Author(s):  
Yucong Fan ◽  
Weihua Yu ◽  
Yue Hu ◽  
Yunwen Liao ◽  
Xiaohui Jiang ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
Carbon Dots ◽  
Limit Of Detection ◽  
Molar Ratio ◽  
Cupric Sulfate ◽  
Selective Determination ◽  
Bimetallic Nanoclusters ◽  
One Step ◽  
The One

Doping Ag-enhanced and glutathione-stabilized Au nanoclusters (GSH–Ag/AuNCs) were prepared by the one-step ultraviolet radiation combined with microwave heating method. The effects of the molar ratio of Au–Ag and different types of energy suppliers on the fluorescent performance of GSH–Ag/AuNCs were studied in detail. After that, a new ratio fluorescent probe (RF-probe) based on the mixing of GSH–Ag/AuNCs with carbon dots (CDs) was designed for sensitive and selective determination of copper gluconate (CG) and cupric sulfate (CS). For the CDs–GSH–Ag/AuNCs RF-probe, the fluorescence (FL) of CDs (at 440[Formula: see text]nm) and that of alloy nanoclusters (NCs) (at 605[Formula: see text]nm) were, respectively, unaffected and strongly quenched in the presence of CG/CS at [Formula: see text][Formula: see text]nm coming from the dynamic quenching process. Corresponding linear ranges and limit of detection (LOD) of the RF-probe for the CG/CS assay were estimated to be 0.17–6.20/0.17–5.62[Formula: see text][Formula: see text]mol/L and 16.80/15.95[Formula: see text]nmol/L, respectively. Furthermore, the proposed RF-probe was successfully used for the assays of CG in CG tablets and CG additive, and CS in infant formula and CS additive, respectively.

scholarly journals One-step synthesis of green emission carbon dots for selective and sensitive detection of nitrite ions and cellular imaging application

RSC Advances ◽  
2020 ◽  
Vol 10 (17) ◽  
pp. 10067-10075
Author(s):  
Minghui Zan ◽  
Cong Li ◽  
Fei Liao ◽  
Lang Rao ◽  
Qian-Fang Meng ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Green Emission ◽  
Cellular Imaging ◽  
Sensitive Detection ◽  
Nitrite Detection ◽  
Imaging Application ◽  
One Step

Schematic route of the carbon dots and their applications for the nitrite detection.

One-step hydrothermal synthesis of chiral carbon dots with high asymmetric catalytic activity for enantioselective direct aldol reaction

2021 ◽  
Author(s):  
Shuang Liu ◽  
Yu He ◽  
Yu Liu ◽  
Shuaibin Wang ◽  
Yajun Jian ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Citric Acid ◽  
Hydrothermal Synthesis ◽  
Carbon Dots ◽  
Hydrothermal Reaction ◽  
Aldol Reaction ◽  
Asymmetric Catalytic ◽  
Direct Aldol Reaction ◽  
Chiral Carbon ◽  
One Step

Chiral carbon dots is prepared by a simple and one-step hydrothermal reaction at 180 °C for 2 h using citric acid and D-proline as precursors, which show high asymmetric catalytic...

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