黑磷纳米光催化材料研究进展

Progress on the Black Phosphorus Nanomaterials for Photocatalysis

黑磷(black phosphorous,BP)作为一种新型的二维材料,具有基于层数可调节的带隙(0.3~2.0 e V)和高的载流子迁移率(1000 cm 2·V^(-1)·s^(-1))等特性,在光催化领域被广泛关注。黑磷在可见光及近红外光区域具有强的吸收,是一种宽光谱响应的半导体光催化材料,具有其他材料无法比拟的优点;高的载流子迁移率使其成为一种优异的光生载流子传输材料;此外,黑磷纳米材料具有大的比表面积,可以为光催化反应提供丰富的反应活性位点,从而提高催化效率。当前,黑磷纳米材料在光催化制氢、光催化固氮、光催化CO 2还原等领域被广泛研究,展现出独特的优点和良好的性能,是一种理想的光催化剂材料。基于此,详细介绍了黑磷材料的结构与特性,归纳了黑磷纳米光催化材料的制备方法,重点介绍了黑磷材料在光催化领域的最新研究进展,讨论了黑磷材料的构效关系,展望了黑磷纳米材料在光催化领域未来的发展方向。

Black phosphorous(BP),as a new two-dimensional material,with an adjustable band gap(0.3~2.0 eV)based on the number of layers and high carrier mobility(1000 cm 2·V^(-1)·s^(-1)),has been widely concerned in photocatalysis.The strong absorption intensity in visible and near-infrared light regions of BP makes it to be a broad-spectrum-responsive semiconductor photocatalyst,which is an advantage that other materials can t match.The high carrier mobility of BP makes it an excellent transport material for photogenerated carrier transfer.Furthermore,the BP nanomaterials have large specific surface area,which can provide abundant reactive sites for photocatalytic reactions,thereby increasing the catalytic efficiency.Currently,BP has been widely studied in the fields of photocatalytic hydrogen production,photocatalytic nitrogen fixation and photocatalytic CO_(2) reduction,it shows unique advantages and good performance,which means BP is an ideal photocatalyst material.In this review,the latest research progress of BP materials in photocatalysis was reviewed.The structure and basic properties of BP were firstly introduced in detail,and then the preparation methods of BP materials were summarized.The relationship between structure and performance of BP photocatalyst was also discussed.At last,the future development direction of BP for photocatalysis was proposed.