Related Experiment Video
Updated: Aug 6, 2026

Spark Plasma Sintering Apparatus Used for the Formation of Strontium Titanate Bicrystals
Published on: February 9, 2017
Strain-Driven In Situ Ni Exsolution on (Sr,Ca)(Ti,Ni)O3 (100) Facets Boosts Hydrogen Spillover and Selective
Qianqian Shen1, Wenjie Wang1, Shilong Feng1
1Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Taiyuan, People's Republic of China.
None:
Photocatalytic CO2 reduction offers a sustainable route to value-added chemicals, yet conventional systems suffer from limited efficiency and hydrocarbon selectivity due to the spatial mismatch between CO2 adsorption and proton sources, delaying proton-coupled electron transfer (PCET). Here, we construct a Ni/(Sr,Ca)(Ti,Ni)O3 heterostructure (Ni/SCTNO) via molten salt exsolution and aluminothermic reduction. Ca2+ doping introduces lattice strain, which drives the in situ exsolution of Ni nanoparticles on the (100) facet, while oxygen vacancies create a positive space charge layer. These effects synergistically form Schottky junctions that act as hydrogen spillover centers, enabling directional H* migration to CO2 sites and spatiotemporally coordinating proton-electron transport. Under simulated sunlight, CH4, C2H4, and C2H6 yields reach 41.89, 18.01, and 16.53 µmol·g- 1·h- 1, respectively, with a total hydrocarbon selectivity of 55.03%, surpassing most reported perovskite-based photocatalysts. This work presents an integrated strategy combining heterointerface engineering, strain regulation, and surface modification for efficient CO2-to-multicarbon fuel conversion.
More Related Videos
Related Concept Videos
Radical Substitution: Hydrogenolysis of Alkyl Halides with Tributyltin Hydride
The bonds formed in this reaction are stronger than the bonds broken, making it energetically favorable. The reaction follows a radical chain mechanism similar to radical halogenation reactions,...
Thermal Sigmatropic Reactions: Overview
Sigmatropic shifts are classified based on an order term [i, j ], where i and j indicate the number of atoms across which each end of the σ bond migrates. Below are examples of a [3,3] sigmatropic shift in 1,5-hexadiene, referred to as...
Reduction of Benzene to Cyclohexane: Catalytic Hydrogenation
Reduction of Alkenes: Catalytic Hydrogenation
Metals like palladium, platinum, and nickel are commonly used in their solid forms — fine powder on an inert surface. As these catalysts remain insoluble in the reaction mixture, they are referred to as heterogeneous catalysts.
The hydrogenation process takes place on the surface of...
Radical Reactivity: Intramolecular vs Intermolecular
Reduction of Alkynes to cis-Alkenes: Catalytic Hydrogenation
Like alkenes, alkynes can be reduced to alkanes in the presence of transition metal catalysts such as Pt, Pd, or Ni. The reaction involves two sequential syn additions of hydrogen via a cis-alkene intermediate.

