Exploring advancements in photocatalytic hydrogen peroxide production, emphasizing technological breakthroughs in pure water, natural water, microdroplets and coupling systems.

An effective strategy to overcome the morphology evolution of hematite nanorods under high‐temperature activation is presented, via tuning the crystallinity and sintering temperature by substrate modification. It is demonstrated that the as‐prepared doping‐free hematite nanorods with fine nanostructures obtain a significantly higher photocurrent density of 2.12 mA cm⁻² at 1.23 V versus RHE, due to effective charge separation and transfer.

Graphene is an increasingly important nanomaterial exhibiting great promise in the area of nanotechnology. In this study, the azide-functionalized graphene derivative was synthesized as the ‘click’ reagent for preparation of polyvalent DNA–graphene conjugates, which provide an effective and stable platform to construct new functional nano-architectures. Assembled with Au nanoparticles, the prepared Au–DNA–graphene nanocomplex exhibits excellent stability that could prevent the nanocomplex from being destroyed by surfactants. Assembled with DNA tetrahedron-structured probes (TSPs), the nanocomplex displays outstanding sensitive electrochemiluminescence properties, which might be used as a biosensor for DNA detection. Therefore, this DNA–graphene conjugates could be explored as the assembly unit for advanced DNA nano-architectures in the field of DNA nanotechnology.