On the road to carbon capture

A derivative of asphalt, the black, petroleum-based substance primarily used to make roads, has been demonstrated to act as a carbon-capture material by researchers at Rice University, Texas. James Tour and colleagues have followed up last year's discovery of a "green" carbon capture material for oil wellhead carbon sequestration with a more effective compound made inexpensively and in very few reaction steps from asphalt. The best version of several trial materials made by the Tour lab is a powder that holds 114 percent of its mass in carbon dioxide; details are published in the journal Applied Materials and Interfaces.