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An amorphous nickel boride-modified ZnxCd1-xS solid solution for enhanced photocatalytic hydrogen evolution.
Dalton Transactions ( IF 3.5 ) Pub Date : 2020-01-06 , DOI: 10.1039/c9dt04311j Yue Cao 1 , Guorong Wang 1 , Qingxiang Ma 2 , Zhiliang Jin 3
Dalton Transactions ( IF 3.5 ) Pub Date : 2020-01-06 , DOI: 10.1039/c9dt04311j Yue Cao 1 , Guorong Wang 1 , Qingxiang Ma 2 , Zhiliang Jin 3
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In this work, the rational design of amorphous NixB as a co-catalyst for the modification of ZnxCd1-xS was achieved. First, NixB was prepared by the redox method and ZnxCd1-xS was synthesized by the hydrothermal method. Then, the electrostatic self-assembly method was used to complete the coupling of NixB and ZnxCd1-xS. The experimental results of H2 production showed that when the mass ratio (wt%) of NixB in NixB/ZnxCd1-xS was 7 wt%, it had the highest activity, and the hydrogen production could reach 1521 μmol under irradiation with light for 5 h. The hydrogen production activity of the composite catalyst was 4.75 times higher than that of pure ZnxCd1-xS. The improvement in the photocatalytic activity can be attributed to the following aspects: (i) UV-vis DRS showed that the addition of NixB increased the absorption of visible light; (ii) the PL, TRPL, IT, EIS and LSV experiments further proved that the composite catalyst had excellent photoelectrochemical properties; (iii) the zeta potential results indicated that the electrostatic attraction between NixB and ZnxCd1-xS provided favorable conditions for the rapid transfer of electrons. This work shows that amorphous NixB has a prominent effect on the modification of ZnxCd1-xS, which provides more ways for the study of photocatalytic H2 evolution.
中文翻译：
非晶态硼化镍修饰的ZnxCd1-xS固溶体，用于增强光催化氢的释放。
在这项工作中，实现了无定形NixB作为助催化剂修饰ZnxCd1-xS的合理设计。首先，通过氧化还原法制备NixB，通过水热法合成ZnxCd1-xS。然后，使用静电自组装方法完成NixB和ZnxCd1-xS的偶联。H2产生的实验结果表明，当NixB / ZnxCd1-xS中NixB的质量比（wt％）为7 wt％时，其活性最高，在光照射5 h下产氢量可达到1521μmol。 。复合催化剂的产氢活性比纯ZnxCd1-xS高4.75倍。光催化活性的提高可归因于以下几个方面：（i）UV-vis DRS表明添加NixB可以增加可见光的吸收；（ii）PL，TRPL，IT，EIS和LSV实验进一步证明了该复合催化剂具有优异的光电化学性能。（iii）Zeta电位结果表明NixB和ZnxCd1-xS之间的静电吸引为电子的快速转移提供了有利条件。这项工作表明，非晶态NixB对ZnxCd1-xS的修饰具有显着影响，这为研究光催化H2的演化提供了更多的方法。
更新日期：2020-01-06
中文翻译：
非晶态硼化镍修饰的ZnxCd1-xS固溶体，用于增强光催化氢的释放。
在这项工作中，实现了无定形NixB作为助催化剂修饰ZnxCd1-xS的合理设计。首先，通过氧化还原法制备NixB，通过水热法合成ZnxCd1-xS。然后，使用静电自组装方法完成NixB和ZnxCd1-xS的偶联。H2产生的实验结果表明，当NixB / ZnxCd1-xS中NixB的质量比（wt％）为7 wt％时，其活性最高，在光照射5 h下产氢量可达到1521μmol。 。复合催化剂的产氢活性比纯ZnxCd1-xS高4.75倍。光催化活性的提高可归因于以下几个方面：（i）UV-vis DRS表明添加NixB可以增加可见光的吸收；（ii）PL，TRPL，IT，EIS和LSV实验进一步证明了该复合催化剂具有优异的光电化学性能。（iii）Zeta电位结果表明NixB和ZnxCd1-xS之间的静电吸引为电子的快速转移提供了有利条件。这项工作表明，非晶态NixB对ZnxCd1-xS的修饰具有显着影响，这为研究光催化H2的演化提供了更多的方法。
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