Direct visible light activation of a surface cysteine-engineered [NiFe]-hydrogenase by silver nanoclusters†,Energy & Environmental Science

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Direct visible light activation of a surface cysteine-engineered [NiFe]-hydrogenase by silver nanoclusters†
Energy & Environmental Science ( IF 32.4 ) Pub Date : 2018-10-19 00:00:00 , DOI: 10.1039/c8ee02361a
Liyun Zhang _{1,

2,

3,

4,

5} , Stephen E. Beaton _{1,

2,

3,

4,

5} , Stephen B. Carr _{5,

6,

7,

8,

9} , Fraser A. Armstrong _{1,

2,

3,

4,

5}

Affiliation

Genetically engineering a cysteine (thiolate) close to the distal [4Fe–4S] cluster of a [NiFe]-hydrogenase creates a highly specific target for attachment of Ag nanoclusters templated in polymethyl acrylate, the resulting ‘hard-wired’ enzyme catalysing rapid hydrogen evolution by visible light. The rate is further enhanced by binding to metal oxide nanoparticles – results of investigations focusing on P-25 TiO₂ and including anatase TiO₂, rutile TiO₂, ZnO, SrTiO₃ and ZrO₂ leading to the proposal that these act as active or structural scaffolds to promote intra-assembly electron transfer.

中文翻译：

银纳米团簇直接对表面半胱氨酸改造的[NiFe]-氢化酶进行可见光激活†

对[NiFe]-加氢酶的远端[4Fe–4S]簇附近的半胱氨酸（硫醇盐）进行基因改造，创造了一个高度特异性的靶标，用于附着模板化聚丙烯酸甲酯中的Ag纳米团簇，产生的“硬连线”酶催化快速的氢由可见光演化。通过与金属氧化物纳米粒子结合，该速率得以进一步提高-研究结果集中在P-25 TiO _2上，包括锐钛矿TiO ₂，金红石TiO ₂，ZnO，SrTiO ₃和ZrO _2，从而提出了将其用作活性或结构性化合物的提议。支架促进组装内电子转移。

更新日期：2018-10-19

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