Elemental sulfur, as a by-product of petroleum refining, is regarded as a solid waste stored in above-ground deposits due to limited existing applications, meanwhile, mercury contamination is one of the current environmental issues considering its high toxicity to the human, and how to safely dispose of hazardous waste adsorbents is still an unavoidable problem. This study addresses these need by utilizing sulfur for preparation of a polysulfide complex material to capture Hg(II) and convert the Hg(II)-containing spent adsorbent into a catalyst. Initially, the mesoporous silica was prepared and functionalized by using diatomite and APTES, then, an in-situ preparation method was applied to obtain the amine-mesoporous silica/poly(m-aminothiophenol) nanocomposite (MAP), subsequently sulfur was copolymerized with MAP and vinylic-potato starch through inverse vulcanization, forming the sulfur crosslinked polymers composite cp(MAP-S-PS). Many characterizations were employed to determine the physicochemical structure and morphology of cp(MAP-S-PS). The adsorption study showed the cp(MAP-S-PS) exhibited the theoretical maximum adsorption capacity of 436.68 mg/g, good regeneration performance after 5 cycles and excellent selectivity between Hg(II) ions and common cations. Furthermore, the collected spent adsorbent cp(MAP-S-PS)/Hg(II) was reused as a catalyst for synthesis of acetophenone with 89% yield, and most of phenylacetylene derivatives were also transformed to corresponding acetophenone in good yields.

由于现有应用有限，单质硫作为石油精炼的副产品被视为储存在地上沉积物中的固体废物，同时，考虑到其对人体的高毒性，汞污染是当前的环境问题之一，并且如何安全处置危险废物吸附剂仍然是一个不可避免的问题。这项研究通过利用硫制备多硫化物络合物材料来捕获Hg（II）并将含Hg（II）的废吸附剂转化为催化剂来满足这些需求。最初，使用硅藻土和APTES制备介孔二氧化硅并进行功能化，然后采用原位制备方法获得胺-介孔二氧化硅/聚（间-氨基硫酚）纳米复合材料（MAP），随后将硫与MAP和乙烯基马铃薯淀粉经逆硫化作用，形成硫交联聚合物复合物cp（MAP-S-PS）。利用许多表征来确定cp（MAP-S-PS）的理化结构和形态。吸附研究表明，cp（MAP-S-PS）的理论最大吸附容量为436.68 mg / g，经过5个循环后具有良好的再生性能，并且在Hg（II）离子与普通阳离子之间具有出色的选择性。此外，收集的废吸附剂cp（MAP-S-PS）/ Hg（II）可作为催化剂用于苯乙酮的合成，收率达89％，大部分苯乙炔衍生物也以良好的收率转化为相应的苯乙酮。