The detection of copper ion (Cu 2+) and sulfide anion (S 2−) is of vital importance since the
abnormal level of Cu 2+ or S 2− can lead to many diseases. Herein, a highly sensitive and …

Highly selective nitrogen-doped carbon quantum dots (ND-CQDs) for copper ion (Cu 2+)
determination were synthesized by a solvent-free pyrolysis of citric acid and histidine. The …

Cadmium ions (Cd2+) have caused relatively serious pollution, threatening human health
and ecosystems. L-Cysteine (L-Cys) is an essential amino acid in living organisms and …

The surface of CdTe quantum dots (Q-dots) was modified with thioglycolic acid (TGA) and
these Q-dots were then covalently conjugated to amino-functionalized silica-coated carbon …

In this work, sulfur and nitrogen co-doped carbon dots (S, N-CQDs) as highly selective
fluorescent probe for silver ion (Ag+) and cysteine (Cys) detection were designed and …

As an integral part of many important enzymes, Cu 2+ is involved in a number of vital
biological processes, which is linked to the oxidative damage and environmental …

Heavy metal ion pollution harms human health and the environment and continues to
worsen. Here, we report the synthesis of boron (B), phosphorous (P), nitrogen (N), and sulfur …

Devising novel water-soluble carbon dots (CDs) with a facile and economical process is
pivotal for the detection of ions in the environment. In this paper, novel nanoscale CDs …

A unique and facile biosensing system for the detection of low-concentration divalent
calcium ions (Ca 2+) in human serum was developed using an environmentally benign, blue …

Carbon quantum dots (CQDs), were gaining traction as promising optical detection materials
due to its unique properties. In this research, rice stock is utilized as source of carbon and …