The authors have prepared highly porous, monolithic, carbon polymerised high internal phase emulsions (carboHIPEs) using tannins as the base material. This material was considered to be one of the most environmentally friendly carboHIPEs to have been prepared based on the fact that it is almost entirely composed of plant-derived chemicals. It was determined that in terms of porosity and mechanical properties, these carboHIPEs compared well with others that had been ...