Lin Bo, Yang Guidong, Wang Lianzhou
XJTU-Oxford International Joint Laboratory for Catalysis, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, 710049, P. R. China.
Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, QLD, Australia.
Angew Chem Int Ed Engl. 2019 Mar 26;58(14):4587-4591. doi: 10.1002/anie.201814360. Epub 2019 Feb 28.
Water adsorption capacity is a key factor to influence the photocatalytic H evolution activity of polymeric g-C N . Herein, we report the synthesis of 3D ordered close-packed g-C N nanosphere arrays (CNAs) that significantly enhance the water adsorption capacity. Through precisely controlling the average stacking-layer number (ASLN) of the nanospheres in CNAs, we reveal an interesting stacking-layer-number dependence of water adsorption in the newly designed CNAs for accelerating the H evolution reaction, which can be attributed to the differences in adsorption surface areas and adsorption sites endowed by the point-defect cavities in sample CNAs.
水吸附能力是影响聚合石墨相氮化碳（g-C₃N₄）光催化析氢活性的关键因素。在此，我们报道了三维有序密堆积石墨相氮化碳纳米球阵列（CNAs）的合成，其显著提高了水吸附能力。通过精确控制CNAs中纳米球的平均堆积层数（ASLN），我们揭示了新设计的CNAs中用于加速析氢反应的水吸附对堆积层数的有趣依赖性，这可归因于样品CNAs中点缺陷空腔赋予的吸附表面积和吸附位点的差异。
