In this work, a stable silver nanoparticle (AgNPs) with strong surface plasmon resonance absorption (Abs) signals was synthesized using light-wave technology. In the absence of aptamers, AgNPs can aggregate in a given concentration of salt solution, resulting in significant changes in color. After adding the aptamer (Apt), it was observed that the aptamer can coordinate with AgNPs and adsorb on the surface of AgNPs, thereby maintaining the stability of the nanosol. In the presence of mercury ions (Hg²⁺), their high-affinity reaction with the aptamer compromised the latter’s protective effect on AgNPs, causing the color of the system to change again. Based on this, a simple and rapid new Abs method for detecting Hg²⁺ can be constructed. The linear range was 2.5 × 10⁻³–10.00 μmol/L, and the detection limit (DL) of the system was 2.03 nmol/L.

Over the past few decades, electrosynthesis has advanced significantly, enabling numerous valuable transformations for synthetic chemists. Olefins are inexpensive, readily available industrial feedstocks extensively used in organic synthesis. Therefore, achieving high-value transformation of olefins is of great value. However, the use of stoichiometric oxidants and the generation of stoichiometric waste hinder its broader application. Utilizing electrochemistry to achieve high-value transformations of olefins represents a green, environmentally friendly, and sustainable strategy, since it eliminates the need for external oxidants. This review discusses recent advances in the high-value conversion of alkenes induced by electrochemistry. The article introduces two modes of electrochemical olefin transformation, discussing both synthetic applications and mechanistic studies. It highlights their advantages and suggests future directions to tackle the existing challenges in this synthetic domain.