A sonication-based strategy for the synthesis of a functional supramolecular Cd(II)-metallogel (CdA-OX) has been achieved through mixing cadmium(II) acetate dihydrate and oxalic acid dihydrate, a low molecular weight gelator (LMWG), in N,N-dimethyl formamide solvent at room temperature under atmospheric pressure. The mechanical properties of the supramolecular Cd(II)-metallogel were investigated through a rheological study. The pebble-like self-assembly hierarchical architecture of the supramolecular metallohydrogel was visualized through field emission scanning electron microscopy investigations. The electrical properties of the metallogel were thoroughly examined and indicate its semiconducting nature. Based on its conducting properties, the Cd(II)-metallogel was successfully applied to a Schottky barrier diode. Overall, this work is a novel instance of technologically challenging electronic device application of a Cd(II)-metallogel.

A fascinating way to originate a mechanically stable metallogel of ferric ions with metal-coordinating organic ligand triethylenetetramine through direct mixing of their water solutions in a stoichiometric ratio is achieved under ambient conditions. The rheological study established the mechanical property of the Fe(III) metallogel. A cashew-shaped microstructure of the metallogel was observed by FESEM analysis. The electrical property of the Fe(III) metallogel was also carefully scrutinized. The semiconducting features like the Schottky barrier diode property of the Fe(III) metallogel were explored. The catalytic role of the Fe(III) metallogel was also critically explored. The Fe(III) metallogel shows an excellent catalytic property toward the synthesis of aryl thioethers via a C–S coupling reaction under mild reaction conditions without the use of any organic solvent.

Although nanoparticles (NPs) are increasingly used in various industries, their uncontrolled environmental release presents a potential risk to water bodies, vegetation and human health. Although previous review studies evaluated the toxicity and bioaccumulation of NPs, their long-term ecological impacts and transport dynamics in aquatic and terrestrial systems remain unexplored. The current review examined the mechanistic bioaccumulation, transport and environmental persistence of NPs, highlighting the need for concurrent risk assessment, regulation and management strategies. The multifaceted nature of nanotechnology necessitates a balanced approach considering both the benefits of NPs and their potential environmental and health risks, requiring comprehensive risk assessment and management strategies. The complexities of NPs risk assessment, emphasizing the unique properties of NPs influencing their toxicity and environmental behavior are critically addressed. Strategies to mitigate NPs' environmental impact include advanced monitoring techniques, regulatory frameworks tailored to NPs' unique properties, promotion of green nanotechnology practices, and NP remediation technologies. Given the complexity and uncertainty surrounding NPs, integration of regulatory, technological, and research-based strategies is imperative. This involves detailed NPs characterization techniques providing basic data for environmental fate prediction models and understanding of biologically relevant risk assessment models to safeguard our environment and public health. In this study, the recent advances in NPs persistence, environmental transport modelling and toxicity mechanisms are uniquely integrated, providing a framework to ecological risk assessment and regulatory approaches.