Graphitic carbon nitride nanosheets as promising candidates for the detection of hazardous contaminants of environmental and biological concern in aqueous matrices

A 3D Cryogel Filter for Oily Wastewater with Metal Ion Fluorosensing Properties

“…The use of graphitic carbon nitride nanosheets (CNNs) in water technologies shows great potential in bridging this gap. CNNs effectively sorb both organic and inorganic pollutants from water, − and they have also been used as optical sensors of heavy metals. − . Although in such cases heavy metal ions in solutions can be effectively detected, the removal of the dispersed CNNs from the liquid media after their interaction with the pollutants requires several postprocessing steps, such as filtration or centrifugation, enhancing the possibility of secondary pollution.…”

Ultrasensitive detection of Ag+ and Ce3+ ions using highly fluorescent carboxyl-functionalized carbon nitride nanoparticles

“…The proliferation of environmental contaminants due to largescale industrial development and urbanization has led to an urgent need to monitor potentially harmful heavy metal ions throughout the environment. Laboratory-based techniques such as atomic absorption spectroscopy, inductively coupled plasma mass spectrometry, and high-performance liquid chromatography (HPLC) are accurate, sensitive, and reliable methods to detect and identify the presence of contaminants in water samples [1,2]. However, the high cost of equipment, time-consuming analysis, and intricate sample preparation limit the practicality of these methods, especially for on-site field applications.…”

“…A wide variety of materials have been investigated for use as fluorescent probes, including small organic molecules [12], carbon quantum dots [13], inorganic quantum dots [14,15] and hybrid nanocomposites [16]. Among these materials, graphitic carbon nitride (g-C 3 N 4 ) stands out because of its high fluorescence, compatibility with flexible substrates, stability against photobleaching, thermal resilience, and low-cost and green fabrication process [1,[16][17][18]. Consequently, g-C 3 N 4 has been widely investigated as a fluorescent probe for heavy metal ions, organic species, and biomolecules [1,16,18].…”

“…Among these materials, graphitic carbon nitride (g-C 3 N 4 ) stands out because of its high fluorescence, compatibility with flexible substrates, stability against photobleaching, thermal resilience, and low-cost and green fabrication process [1,[16][17][18]. Consequently, g-C 3 N 4 has been widely investigated as a fluorescent probe for heavy metal ions, organic species, and biomolecules [1,16,18]. Despite its promising properties, conventional bulk form g-C 3 N 4 is typically unsuitable for use in the fields of chemical sensing, bioimaging, and biomedicine due to its insolubility in water, low PL quantum yield, and macroscopic particle size which results in particle sedimentation and larger polydisperse particles that are difficult to disperse uniformly in aqueous media [19].…”

Development of a new hyper crosslinked resin based on polyamine-isocyanurate for the efficient removal of endocrine disruptor bisphenol-A from water

“…The rapid growth in industrialization and urbanization has posed a serious threat to global water contamination. Various contaminants release into the natural water reservoirs include anthropogenic-and metalloid pollutants [1,2] pharmaceuticals [3], metal ions [4][5][6], dyes [7,8], phenolic compounds [9] and various other pollutants [10,11]. The excessive spike in pollutants concentration in water bodies makes the water inapt for human health and aquatic life.…”