Turn Hazardous Endosulfan into S-Doped Alkynyl Carbon Material for Energy Storage and Hg(II) Adsorption via a Green Mechanochemical Process

Abstract

Degradation of persistent organic pollutants (POPs), synthesis of advanced electrode materials, and treatment of heavy metal wastewater are important issues in energy and environment fields, which may be realized simultaneously through a multi-in-one interface strategy. Herein, an in situ S-doped alkynyl carbon material (SACM) was synthesized by co-milling hazardous endosulfan and CaC 2 . The solventfree mechanochemical process is efficient, feasible, and green, whereby endosulfan is destructed completely under mild conditions without hazardous products and intermediates. The resultant SACM is a unique alkynyl-linked carbon skeleton with in situ S doping and multilayered structure. Furthermore, the SACM exhibits high supercapacitor performances with remarkable cycling stability and high specific capacitance (232.3 F cm −3 ), as well as excellent Hg(II) adsorptivity with pseudo-chemosorption behavior and high Hg(II) adsorbance (675.7 mg g −1 ). This work provides an integrated solution for the efficient degradation of hazardous endosulfan and a green synthesis of functional ACMs.

Green synthesis of oxygenic graphyne with high electrochemical performance from efficient mechanochemical degradation of hazardous decabromodiphenyl ether

“…[18][19][20] Recently, we have successfully synthesized a series of advanced functional alkynyl carbon materials (ACMs) through a mechanochemical reaction of CaC 2 with polyhalogenated aromatic hydrocarbons, carbonates and even gaseous CO 2 . [21][22][23][24][25] The resulting ACMs show a unique structure with an alkynyl-linked carbon skeleton and prospective applications in many fields. Therefore, mechanochemistry may be a viable route for the reactive activation of CaC 2 and the high value utilization of BDE-209 in a unified reaction process via the production of functional ACMs.…”