Due to water depletion and increasing level of pollution from standard and emerging contaminants, the development of more efficient purification materials and technology for drinking water treatment is a crucial challenge to be addressed in the near future. Graphene oxide (GO) has been pointed as one of the most promising materials to build structure and devices for new adsorbents and filtration systems. Here, we analyzed two types of GO doped 3D chitosan-gelatin aerogels with GO sheets embedded in the bulk or deposited on the surface. Through combined structural characterization and adsorption tests on selected proxies of drinking water micropollutants, we compared both GO-embedded and GO-coated materials and established the best architecture for achieving enhanced removal efficiency toward contaminants in water. To evaluate the best configuration, we studied the adsorption capacity of both systems on two organic molecules (i.e., fluoroquinolonic antibiotics ofloxacin and ciprofloxacin) and a heavy metal (lead Pb²⁺) of great environmental relevance and with already proved high affinity for GO. The Pb monolayer maximum adsorption capacity q_max was 11.1 mg/g for embedded GO aerogels and 1.5 mg/g in coated GO-ones. Only minor differences were found for organic contaminants between coating and embedding approaches with an adsorption capacity of 5–8 mg/g and no adsorption was found for chitosan-gelatin control aerogels without GO. Finally, potential antimicrobial effects were found particularly for the GO-coated aerogels materials, thus corroborating the multifunctionality of the newly developed porous structures.

由于水的枯竭以及来自标准污染物和新出现污染物的污染水平不断提高，开发更有效的饮用水处理材料和技术是在不久的将来要解决的关键挑战。氧化石墨烯（GO）被认为是构建用于新型吸附剂和过滤系统的结构和装置的最有前途的材料之一。在这里，我们分析了GO掺杂的3D壳聚糖-明胶气凝胶的两种类型，其中GO板嵌入大块或沉积在表面上。通过对饮用水中微污染物的选定代理进行组合的结构表征和吸附测试，我们比较了GO嵌入材料和GO涂覆材料，并建立了用于提高对水中污染物去除效率的最佳架构。²⁺）具有重大的环境意义，并且已经证明对GO具有高度亲和力。嵌入式GO气凝胶的Pb单层最大吸附容量q _max为11.1 mg / g，而在包衣的GO-ones中为1.5 mg / g。包衣和包埋方法之间的有机污染物差异很小，吸附能力为5-8 mg / g，没有GO的壳聚糖-明胶对照气凝胶没有吸附。最后，特别是对于GO涂层气凝胶材料，发现了潜在的抗菌作用，从而证实了新开发的多孔结构的多功能性。