Nanosized metal aggregates, including metal nanoparticles and nanoclusters, are often the active species in numerous applications. For maintaining the active form of MAs in use, they need to be anchored and stabilised, preventing agglomeration.

One of the biggest challenges to planet Earth is the unprecedented rising of carbon emissions (estimated 410 ppm in 2020), which is the major contributor to environmental pollution and climate change. [1][2][3] Moreover, the increasing energy demand together with the depleting fossil fuel reserves are ringing alarms to find alternative energy resources. To deal with these global challenges, renewable energy resources are widely recognized as the most plausible options. Among numerous different available renewable energy resources, hydrogen (H 2 ) generated from water splitting is considered as the most green, cost-effective, and clean energy carrier and fuel. [4] It can be directly used for domestic heating, fuel cells, automobiles, and a variety of applications in industry. [5][6][7] Currently, majority of H 2 is produced via the methane steam reforming process which is environmentally unsustainable and economically expensive. [8,9] H 2 production via electrocatalytic water splitting has been extensively interesting and widely explored. [10][11][12] As an alternative, solar

Photocatalytic Hydrogen Generation In article number http://doi.wiley.com/10.1002/solr.202200552, Mian Zahid Hussain, Yongde Xia, and co‐workers present 3D printed monolith composites derived from Ti‐metal organic framework (MOF) mixed with boehmite as promising photocatalysts, exhibiting a hydrogen evolution reaction (HER) performance 5 times higher than Ti‐MOF‐derived TiO2/C powder. Moreover, deposition of Pt onto 3D printed monolith by an atomic layer deposition approach provides additional active sites and further enhances the photocatalytic HER activity by 30%.