Bright green fluorescence of microwave irradiation-synthesized Cdots as sensitive probe of iron (III)

Lewa, Ismira Wahyu Lestari; Sutanto, Heri; Subagio, Agus; Marhaendrajaya, Indras; Sugito, Heri

doi:10.1088/2053-1591/ab3680

Cited by 7 publications

(3 citation statements)

References 28 publications

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“…The best condition to produce the highest QY is the power range of 600-800 W with a mass of urea of 2-3 grams. This result is consistent with Lewa et al (2019) report that adding a urea passivation agent into citric acid up to 3 grams will increase the luminescence of Cdots, while the addition of more than 3 grams will decrease the luminescence [11]. A further increase or decrease in this parameter hurts QY.…”

Section: Response Surface Methodologysupporting

confidence: 91%

“…A simple technique currently being developed by researchers is to utilize the optical properties of fluorescence materials [10]. The fluorescence principle has been widely proposed because observations can be made by direct eye, fast reading, and low cost, so optical detection based on fluorescence properties can encourage faster and simpler analysis [11]. One of the environmentally friendly fluorescence materials that can be developed into heavy metal detectors is carbon dots (Cdots).…”

Section: Introductionmentioning

confidence: 99%

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Quantum yield optimization of carbon dots using response surface methodology and its application as control of Fe³⁺ion levels in drinking water

Alkian

Sutanto

Hadiyanto

2022

Mater. Res. Express

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Early detection of heavy metals in drinking water is a fundamental step that must be taken to prevent adverse effects on health. This research aims to develop a heavy metal ion detector by utilizing the fluorescence properties of carbon dots. Cdots were synthesized using the microwave irradiation method based on the central composite design: urea mass 0.31-3.68 gr; reactor power 200-1000 W; synthesis time is 13-46 min, and the response is quantum yield. Material characterization includes PL, TEM, UV-VIS, XRD, and FTIR. The selectivity and sensitivity of Cdots as detectors were tested for Ag+, Bi3+, Ni2+, Al3+, Co2+, Pb2+, Fe3+, Zn2+, Zr4+, and Hg2+ ions at concentrations of 0-10 µM. The results showed that Cdots were successfully synthesized by fluorescent light green at 544 nm. An adequate response model is quadratic with the formulation QY= +58.36+10.41X1+14.06X2+13.59X3–5.57X2X3–4.89X12-8.60X22– 5.40X32. The best Cdots were obtained in the formulation of R9 (3 g, 800 W, 40 min), which resulted in a QY of 74.39%. The characteristics of Cdots are spherical, diameter 6.6 nm, the bandgap of 2.53 eV, and having an amorphous structure. The surface of Cdots contains various functional groups such as O-H, C-H, C=O, C N, and C=C. In the heavy metal detection test, Cdots showed specific sensitivity to Fe- 3+ ions. The addition of Fe3+ concentration and the extinction of Cdots fluorescence intensity formed a linear correlation F0/F=0.08894[Fe3+]+0.99391 (R2=0.99276). The detection ability of Cdots for Fe3+ ions reaches a concentration of 0.016 ppm, much lower than the regulatory threshold limit of SNI, WHO, and IBWA. The detection of Fe3+ ions in drinking water uses a fluorescence technique consistent with the SSA and ICP-OES. Based on these results, the fluorescence technique using Cdots can be an instrument for quality control of the final drinking water product.

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Section: Response Surface Methodologysupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Quantum yield optimization of carbon dots using response surface methodology and its application as control of Fe³⁺ion levels in drinking water

Alkian

Sutanto

Hadiyanto

2022

Mater. Res. Express

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“…Carbon dots (C-Dots) are unique materials with low toxicity [8] and attractive optical properties. CDs have been applied to various fields, such as energy [7,8], health [9,10], and environment [11,12]. Several optical advantages possessed by CDs cause these materials to be thoroughly studied and developed [13,14].…”

Section: Introductionmentioning

confidence: 99%

A Review of Carbon dots (CDs) Application in Sensing and Removing Medical Waste

et al. 2020

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Carbon dots materials (CDs) have the capability in the management of medical waste problem because of its advantage in the detection and degradation of pollutants. The synthesized CDs through various processes and raw materials have been applied to medical wastes, especially antibiotics such as tetracycline (TC), amoxicillin (AMX), para-Nitrophenol (p-NP), doxycycline (DC), ciprofloxacin (CIP), and oxytetracycline (OTC). These antibiotics are detected by utilizing changes in the luminescence property of CDs from the turn-off and turn-on mechanisms. Afterward, the degradation process is conducted using CDs as support materials agent semiconductors in the photosynthesis scheme. In general, CDs can be referred to as multifunction smart materials with the ability to detecting the presence of the antibiotics in simple, sensitive, and selective ways, and potency of medical pollutant removal clearly and effectively.

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Enhancing sensitivity of carbon dots as Fe ion sensor using time-resolved photoluminescence technique

Lewa

Isnaeni

2020

J Nanopart Res

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Bright green fluorescence of microwave irradiation-synthesized Cdots as sensitive probe of iron (III)

Cited by 7 publications

References 28 publications

Quantum yield optimization of carbon dots using response surface methodology and its application as control of Fe³⁺ion levels in drinking water

Quantum yield optimization of carbon dots using response surface methodology and its application as control of Fe³⁺ion levels in drinking water

A Review of Carbon dots (CDs) Application in Sensing and Removing Medical Waste

Enhancing sensitivity of carbon dots as Fe ion sensor using time-resolved photoluminescence technique

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Bright green fluorescence of microwave irradiation-synthesized Cdots as sensitive probe of iron (III)

Cited by 7 publications

References 28 publications

Quantum yield optimization of carbon dots using response surface methodology and its application as control of Fe3+ion levels in drinking water

Quantum yield optimization of carbon dots using response surface methodology and its application as control of Fe3+ion levels in drinking water

A Review of Carbon dots (CDs) Application in Sensing and Removing Medical Waste

Enhancing sensitivity of carbon dots as Fe ion sensor using time-resolved photoluminescence technique

Contact Info

Product

Resources

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Quantum yield optimization of carbon dots using response surface methodology and its application as control of Fe³⁺ion levels in drinking water

Quantum yield optimization of carbon dots using response surface methodology and its application as control of Fe³⁺ion levels in drinking water