Mussel‐Directed Synthesis of Nitrogen‐Doped Anatase TiO₂

Abstract

Structure-forming processes leading to biominerals are well worth learning in pursuit of new synthetic techniques. Strategies that attempt to mimic nature in vitro cannot replace an entire complex natural organism, requiring ingenuity beyond chemists' hands.A"bioprocess-inspired synthesis" is demonstrated for fabrication of N-doped TiO 2 materials at ambient temperature by direct implantation of precursor into living mussels.T he amorphous precursor transforms into Ndoped anatase TiO 2 with ah ierarchicaln anostructure.S ynthetic TiO 2 exhibits high phase stability and enhanced visiblelight photocatalytic activity as ar esult of modifications to its band gap during in vivo mineralization. Intracellular proteins were found to be involved in TiO 2 mineralization. Our findings may inspire material production by new synthetic techniques, especially under environmentally benign conditions.

Hierarchical Honeycomb Br-, N-Codoped TiO2 with Enhanced Visible-Light Photocatalytic H2 Production

“…Besides, N exhibits higher atomic porbital energy than O and it could induce an acceptor level above the valence band maximum (VBM) of TiO 2 . 26,27 Br element shows no obvious XPS peak at 67.8 eV (Br 3d 5/2 ) and 69.4 eV (Br 3d 3/2 ) due to low Br content (0.3 wt %, Figure S4). 28,29 Besides, similarly with I or F doping, Br atoms can substitute Ti sites in TiO 2 , constructing the lattice oxygen of Ti−O−Br.…”

Highly Carbon-Doped TiO2 Derived from MXene Boosting the Photocatalytic Hydrogen Evolution

“…Due to the carbon doping, the new impurity was generated between the CB and the VB, which could further narrow the band gap. Finally, the impurity, which tended to induce the acceptor level above the VB maximum of TiO 2 , could be used as an efficient hole transfer medium, 63,64 which further achieved the effective separation of electron holes. Due to enough energy, electrons that were excited to CB could easily reduce protons to produce hydrogen.…”

Heteroatom‐Doped Carbonaceous Photocatalysts for Solar Fuel Production and Environmental Remediation

“…Indeed, the doping by heteroatoms has attracted great interest in fabricating advanced photocatalysts including both non-metallic photocatalysts, [1,4,[7][8][9][10][77][78][79][80][81][82][83][84] and metallicp hotocatalysts. [84][85][86][87][88][89][90][91][92][93][94][95] In this Review,w ef ocus on the non-metallic heteroatoms-doped carbonaceous photocatalysts for energy conversion and environmental remediation applications. He is the head of the "Advanced Catalytic Materials" research group, DUT.In2 012, he was awarded the "Program for New Century Excellent Ta lents in University" by the Chinese Ministry of Education.…”