An alkaline-modified natural sponge was applied as support of gold and silver nanocatalysts and a deformable reactor to hold the reaction solution, quickly adsorb several kinds of environmental pollutants (4-nitrophenol, hexavalent chromium, and methyl orange) and efficiently catalyse their conversion. As the reaction solution is sustained in the connecting micro-pores constructed by the stretched and knotted sponge fibers, the catalytic reaction is free from external mass transfer and suffers slight internal mass transfer limitation. This batch-wise reaction system employing an operation procedure of injection-extrusion achieved a nearly complete conversion of the reactants within 1 min or much less. This compressible support can also be packed in a continuous flow reaction system and can be repeated use for 37 times without any loss of catalytic activity. This study provides a generalizable and straightforward strategy for utilizing deformable soft supports that may inspire some unique industrial applications.

将碱性改性天然海绵作为金银纳米催化剂的载体和可变形反应器来容纳反应溶液，快速吸附多种环境污染物（4-硝基苯酚、六价铬和甲基橙）并有效催化其转化。由于反应溶液维持在由拉伸和打结的海绵纤维构成的连接微孔中，催化反应不受外部传质影响，内部传质受到轻微限制。这种采用注射-挤出操作程序的分批反应系统在 1 分钟或更短的时间内实现了反应物的几乎完全转化。这种可压缩的载体也可以装在连续流动的反应系统中，可以重复使用 37 次，催化活性没有任何损失。这项研究为利用可变形软支撑提供了一种通用且直接的策略，可能会激发一些独特的工业应用。