A three-dimensional (3D) robust sodium alginate/gelatin/graphene oxide (SGGO) triple-network composite aerogel was designed using a “hydrophilic assembly–sustained release gelation” two-step method. The resulting SGGO aerogel has an ordered fishing net-like microstructure, low density (16.2 mg/cm³), high porosity (93.5%), and abundant functional groups when only 3 wt% GO was incorporated. The reinforced mechanical strength can reach 0.37 MPa and 0.12 MPa under dry and wet states, respectively, and the dry strength can still reach 0.31 MPa without a significant loss after five compression cycles. A batch adsorption experiment was performed as a function of pH, contact time and initial concentration. Adsorption behavior followed the pseudo second-order kinetic model and Langmuir isotherm, yielding the maximum monolayer adsorption capacity of 322.6 mg/g and 196.8 mg/g for Methylene blue (MB) and Congo red (CR), respectively. Moreover, thermodynamic studies indicated a spontaneous and endothermic adsorption process. After five regeneration cycles, the adsorption capacity can reach 88.4% and 86.5% of the initial values for MB and CR, demonstrating a high-performance, recyclable and promising candidate for dye wastewater treatment.

使用“亲水组装-持续释放胶凝”两步法设计了三维（3D）坚固的海藻酸钠/明胶/氧化石墨烯（SGGO）三层网络复合气凝胶。所得的SGGO气凝胶具有有序的渔网状微观结构，密度低（16.2 mg / cm ³当仅掺入3 wt％的GO时，孔隙率（93.5％）和丰富的官能团。在干态和湿态下，增强的机械强度可以分别达到0.37 MPa和0.12 MPa，并且在五个压缩循环后，干强度仍可以达到0.31 MPa，而没有明显的损失。根据pH，接触时间和初始浓度进行批量吸附实验。吸附行为遵循伪二级动力学模型和Langmuir等温线，对亚甲基蓝（MB）和刚果红（CR）的最大单层吸附容量分别为322.6 mg / g和196.8 mg / g。此外，热力学研究表明自发的和吸热的吸附过程。经过5个再生循环，MB和CR的吸附容量可以达到初始值的88.4％和86.5％，