Carbon dots production via pyrolysis of sago waste as potential probe for metal ions sensing

Xian, Tan; Romainor, Ain Nadirah Binti; Chin, Suk Fun; Ng, Sing Muk

doi:10.1016/j.jaap.2013.11.001

Cited by 161 publications

(96 citation statements)

References 37 publications

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“…In general, the synthetic methods for C-dots include arcdischarge [2], electrochemical oxidation [3][4][5], laser ablation [6][7][8][9], hydrothermal synthesis [10][11][12][13][14][15], pyrolysis [16][17][18][19], microwave-assisted heating [20][21][22][23][24][25][26], plasma treatment [27], neutralization heating [28], and sonication treatment [29] (Scheme 1). All these synthetic methods allow, up to some extent, preparing moderately high-quality C-dots with relatively high PL performance and small size.…”

Section: Introductionmentioning

confidence: 99%

“…However, some of these synthetic methods suffer from limitations such as time-consuming treatment process, requirement of strong acids for catalysis, high energy consumption, and complex equipment set-up. Recently, there is a considerable interest in developing labor, material, and energy efficient synthetic methods for C-dots such as carbonization of naturally available bioresources [15,19,24,26,27,[30][31][32][33][34][35][36][37], preparation with low heating temperature [38], and synthesis without external heating [39,40]. In addition, the flexibility in modification and functionalization of the C-dots surface has opened many possibilities in the incorporation of heteroatoms such as nitrogen [15,20,21,[37][38][39][40][41][42][43][44][45][46], sulfur [33,[46][47][48][49], phosphorous [39,49], and silane [50] into C-dots framework to enhance the PL properties of C-dots.…”

Section: Introductionmentioning

confidence: 99%

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Characterization and Analytical Separation of Fluorescent Carbon Nanodots

Gong

Liu

et al. 2017

Journal of Nanomaterials

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Carbon nanodots (C-dots) are recently discovered fluorescent carbon nanoparticles with typical sizes of <10 nm. The C-dots have been reported to have excellent photophysical and chemical characteristics. In recent years, the advances in the development and improvement in C-dots synthesis, characterization, and applications are burgeoning. In this review, we introduce the most commonly used techniques for the characterization of C-dots. The characterization techniques for C-dots are briefly classified, described, and illustrated with applied examples. In addition, the analytical separation methods for C-dots (including electrophoresis, chromatography, density gradient centrifugation, differential centrifugation, solvent extraction, and dialysis) are included and discussed according to their analytical characteristics. The review concludes with an outlook towards the future developments in the characterization and the analytical separation of C-dots. The comprehensive overview of the characterization and the analytical separation techniques will safeguard people to use each technique more wisely.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Characterization and Analytical Separation of Fluorescent Carbon Nanodots

Gong

Liu

et al. 2017

Journal of Nanomaterials

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“…Some heavy metal ions were chosen as targeted analytes to be tested since they are of environmental and health concerns that require monitoring [30]. Besides, CNPs have showed some successes in detecting metal ions previously, although the CNPs were produced using different routes and starting precursors as compared to this study [31,32].…”

Section: Sensing Potential Of Heavy Metal Ionsmentioning

confidence: 99%

A sustainable alternative to synthesis optical sensing receptor for the detection of metal ions

et al. 2015

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“…CDs, a new member of carbon nanomaterial family with diameter below 10 nm, have great fluorescent performance, excellent dispersity and biocompatibility [6,7]. The synthetic methods of CDs can be classified into top-down and bottom-up approaches [8].Top-down methods rely on reducing the size of the graphite-like structures until the products become fluorescent nanoparticles. In the bottom-up processes, anything with carbogenic nature can synthesize CDs under suitable conditions [9].…”

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confidence: 99%

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confidence: 99%

Carbon dots: synthetic methods and applications as fluorescent probes for the detection of metal ions, inorganic anions and organic molecules

et al. 2015

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and biological materials. It has been found that fluorescent probes are one of the most successful approaches. Fluorescent probes such as organic molecules have the advantages of high sensitivity and fast analysis, but they suffer from low water solubility. Semiconductor quantum dots (QDs) can be used as fluorescent probes, while the issue of toxicity limits their practical applications [1,2]. Fluorescent carbon dots (CDs) with similar physicochemical properties of QDs and relatively low in toxicity and cost of synthesis are the most suitable alternatives to organic molecules and QDs [3]. CDs gradually become a rising star as fluorescent probes in a number of fields [4,5]. CDs, a new member of carbon nanomaterial family with diameter below 10 nm, have great fluorescent performance, excellent dispersity and biocompatibility [6,7]. The synthetic methods of CDs can be classified into top-down and bottom-up approaches [8].Top-down methods rely on reducing the size of the graphite-like structures until the products become fluorescent nanoparticles. In the bottom-up processes, anything with carbogenic nature can synthesize CDs under suitable conditions [9]. Always the synthetic strategies and the precursors affect the internal properties of the resulting nanoparticles such as the size, crystallinity, oxygen or nitrogen content, emission characteristics and compatibility with a particular solvent [10][11][12][13]. Particularly, with the advantages of great dispersibility in water and tunable fluorescence, CDs are also becoming attractive alternatives for novel fluorescence markers, fluorescent probes and optical probes [14,15].In this review, we mainly summarize the recent advances of CDs about the easy synthesises, sensitive fluorescent detections of ions and organic molecules and possible detection mechanisms. It is our aim that the synthesis of this knowledge will offer valuable insight and inspire research into the exciting areas. Some suggestions and an outlook are put forward about the applications of CDs.Abstract Carbon dots (CDs), a new class of fluorescent materials, have recently attracted considerable research interest. CDs have overcome some defects of traditional nanomaterial. In addition to their small size and optical properties, CDs have the excellent advantages of good biocompatibility and are easy to achieve surface functionalization. Since this discovery, CDs can be widely used in the field of biochemical sensing and environmental testing. This article reviews the progress in the research and development of CDs on their syntheses, applications for the fluorescence detection and possible mechanisms. Finally, we have an outlook of the research trends and future prospects of CDs.

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Carbon dots production via pyrolysis of sago waste as potential probe for metal ions sensing

Cited by 161 publications

References 37 publications

Characterization and Analytical Separation of Fluorescent Carbon Nanodots

Characterization and Analytical Separation of Fluorescent Carbon Nanodots

A sustainable alternative to synthesis optical sensing receptor for the detection of metal ions

Carbon dots: synthetic methods and applications as fluorescent probes for the detection of metal ions, inorganic anions and organic molecules

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