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Journal of Nanostructures، جلد ۱۱، شماره ۲، صفحات ۲۳۶-۲۴۲
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عنوان انگلیسی Novel Carbon Quantum Dots: Green and Facile Synthesis, Characterization and its Application in On-off-on Fluorescent Probes for Ascorbic Acid
چکیده انگلیسی مقاله Nanostructures have proved to be a very attractive option for sensor application due to their physical and chemical properties. In recent years, carbon quantum dots as a new member of carbon nanostructures has been widely used in the field of sensors. In this work, carbon quantum dots was synthesized via green precursors using hydrothermal method. The prepared products were characterized via with X-ray diffraction (XRD) analysis, Transmission Electron Microscopy (TEM), FT-IR, UV-Vis, and Photoluminescence (PL) spectroscopy. The results revealed that the prepared carbon quantum dots provide excitation-dependent fluorescence emission. The obtained findings from photoluminescence spectroscopy revealed that as-prepared carbon quantum dots could be applied as a fluorescent probe for detection of ascorbic acid. The PL of carbon quantum dots can be significantly quenched by Cr(VI), which follows a dynamic quenching mechanism. As ascorbic acid enters the solution, Cr(VI) reduced to Cr(III) which cause the turn back the carbon quantm dots fluorescence and a good linearity in range of 0.06–0.18 mM.
کلیدواژه‌های انگلیسی مقاله Nanosensor, carbon quantum dots, quenching, Photoluminescence
نویسندگان مقاله Amjad Hussein Altajer |
Department of pharmaceuticals, college of pharmacy, Almaaqal University, Iraq

Syahril Efendi |
Fasilkom-TI, Universitas Sumatera Utara, Medan, Indonesia

Abdullah Hasan Jabbar |
Optical Department, College of Health and Medical Technology, Sawa University, Ministry of Higher Education and Scientific Research, Al-Muthanaa, Samawah, Iraq

Salim Oudah Mezan |
General Directorate of Education in Al-Muthanna Governorate, Ministry of Education, Republic of Iraq

Lakshmi Thangavelu |
Department of Pharmacology, Dental College and Hospital, Institute of medical and Technical Sciences, Saveetha university, Chennai, India

Mustafa M. Kadhim |
Department of Dentistry, Kut University College, Kut, Wasit 52001, Iraq

Ayad M F. Alkai |
College of science for women, University of Babylon, Iraq

نشانی اینترنتی https://jns.kashanu.ac.ir/article_111480_b78c621b70aad5a810d949dacbed243b.pdf
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