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Activation of BaTaO _2N photocatalyst for enhanced non-sacrificial hydrogen evolution from water under visible light by forming a solid solution with BaZrO _3

机译:通过与BaZrO _3形成固溶体,活化BaTaO _2N光催化剂以增强可见光下水的非牺牲氢释放

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摘要

No sacrifice needed! Activation of perovskite-type BaTaO _2N (band gap: 1.8-1.9 eV) to improve photocatalytic activity for non-sacrificial H _2 evolution from water under visible light (λ>420 nm) was achieved by forming a solid solution with BaZrO _3, improving the performance six- to ninefold (see figure). The improvement is attributable to the increased driving force for the redox reactions and the reduced density of defects, which minimizes the undesirable electron-hole recombination.
机译:无需牺牲!通过与BaZrO _3形成固溶体,实现了钙钛矿型BaTaO _2N(带隙:1.8-1.9 eV)的活化,以改善可见光(λ> 420 nm)下非牺牲性H _2从水中析出的光催化活性。性能提高了六到九倍(见图)。改善归因于氧化还原反应的驱动力增加和缺陷密度降低,这使不良的电子-空穴复合最小化。

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