The latest MaterChemFront issue 7 is published online.
The front cover story, Defect electrocatalytic mechanism: concept, topological structure and perspective is contributed by . The inside cover features a story on Seeking value from biomass materials: preparation of coffee bean shell-derived fluorescent carbon dots via molecular aggregation for antioxidation and bioimaging applications by Xinyue Zhang, Hui Wang, Chunhui Ma, Na Niu, Zhijun Chen, Shouxin Liu, Jian Li and Shujun Li.