Biocompatible rhodamine functionalized nanodiamond for heavy metal ions detection: Demonstration by paper strips, cellular imaging, and real water investigations
學年 114
學期 1
出版（發表）日期 2025-10-01
作品名稱 Biocompatible rhodamine functionalized nanodiamond for heavy metal ions detection: Demonstration by paper strips, cellular imaging, and real water investigations
作品名稱（其他語言）
著者 Muthaiah Shellaiah; Kien Wen Sun; K. Anandan; Mayank Bhushan; Arumugam Murugan; Wen-Tai Li
單位
出版者
著錄名稱、卷期、頁數 Diamond and Related Materials 158, 112698
摘要 Developing the nanomaterials for detecting Fe3+ and Cr6+ is still challenging. A biocompatible rhodamine-functionalized nanodiamond (P) displays a photoluminescence (PL) “Turn-Off” response to detect Fe3+ and Cr6+ ions. The P was characterized by Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HR-TEM), powder X-ray diffraction (PXRD), dynamic light scattering (DLS), and zeta potential (ζ) measurements. The PL “Turn-Off” response of P to Fe3+ and Cr6+ becomes effective between pH 5–10 and holds the Stern-Volmer quenching constants (KSV) values of 4.16 × 104 M−1 and 9.63 × 104 M−1, respectively. Linear PL responses of P to Fe3+ and Cr6+ are found at 0.03 to 300 μM, with detection limits (LODs) of 85 nM and 57 nM, respectively. Sensor reversibility, binding modes, stoichiometry, static/dynamic quenching, and particle aggregation-tuned partial graphitization were elucidated from UV/PL, FTIR, TEM, DLS, Zeta potential, PXRD, and Raman spectroscopy. Sulforhodamine B (SRB) assay and in vitro imaging of Fe3+ and Cr6+ in MCF-7 cells defined the P's biocompatibility. The strip method, tap, and lake water recoveries demonstrate P's solid-state and real-water-based applicability in detecting Fe3+ and Cr6. In particular, tap and lake water investigations exhibit >98 % recovery, with relative standard deviations (RSDs) of <4 %, validated by inductively coupled mass (ICP-MS) spectroscopy. These findings highlight P's heavy metal sensing ability, which could drive similar future innovations.
關鍵字 Luminescent nanomaterials; Rhodamine-functionalized nanodiamond; Fe3+ ions; Cr6+ ions; Graphitization of nanodiamond; Strip method; Static and dynamic quenching; Surface-tuned detection; Biocompatibility; Cellular imaging
語言 en
ISSN 0925-9635
期刊性質 國外
收錄於 SCI
產學合作
通訊作者
審稿制度 否
國別 NLD
公開徵稿
出版型式 ,電子版
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機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/129594 )