Cl-doped Bi2S3 homojunction nanorods with rich-defects for collaboratively boosting photocatalytic reduction performance
Cl-doped Bi2S3 homojunction nanorods with rich-defects for collaboratively boosting photocatalytic reduction performance
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具有丰富缺陷的 Cl 掺杂 Bi2S3 同质结纳米棒可协同提高光催化还原性能
DOI：
10.1016/j.apsusc.2020.147002
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发表时间：
2020-11
影响因子：
6.7
通讯作者：
贾丽霞
中科院分区：
文献类型：
--
作者：
艾礼莉;贾殿赠;郭楠楠;徐梦姣;张苏;王鲁香;贾丽霞
由于电荷分离速度慢，表面反应位效率低，开发高效的催化剂实现有毒的六价铬转化为无毒的三价铬面临着巨大的挑战。本论文采用同质结和表面缺陷相结合的合成路线，设计了富缺陷的掺氯Bi2S3同质结纳米棒，在不需要助催化剂、外加光敏剂或牺牲剂的情况下，大大提高了水溶液中六价铬的光还原活性。通过BiOCl的硫化和氯的掺杂，生长出表面有硫缺陷的掺氯Bi2S3纳米棒。同质结是通过控制合成条件和引入Cl-−来实现纳米粒子的定向附着。对缺陷和同质结的分析表明，硫缺陷主要集中在同质结裸露的{1-12}面，而不是裸露的{0+1+0}面。工程硫缺陷能够调节掺氯Bi2S3的电子结构，并作为表面活性中心来激活吸附的污染物物种。同时，具有不同外露刻面的同质结结构可以增强电子-空穴的分离。由于同质结和表面缺陷的存在，富氯掺杂的Bi2S3同质结纳米棒显示出比Bi2S3和BiOCl光还原速率分别提高19倍和45倍的性能。
Due to the slow charge separation and low efficiency of surface reactive site, developing efficient catalysts to achieve the conversion of toxic Cr (VI) to non-toxic Cr (III) faces huge challenges. Herein, a synthesis route by involving homojunction and surface defects is employed to design defect-rich Cl-doped Bi2S3homojunction nanorods, which considerably boosted the aqueous Cr (VI) photoreduction activity without co-catalyst, extra photosensitizer or sacrificial agent. Cl-doped Bi2S3nanorods with surface sulfur defect are grownviathe sulfuration of BiOCl and the doping of Cl. The homojunction originates from oriented attachment of the nanoparticles by controlling the synthesis conditions and the introduction of Cl−. Analysis of the defects and homojunctions disclosed that the sulfur defects are mainly concentrated on the exposed {1–12} facet of the homojunction rather than the exposed {0 1 0} facet. The engineered sulfur defects are able to tune the electronic structure of Cl-doped Bi2S3and serve as the surface active site to activate adsorbed pollutant species. Meanwhile, the homojunction structure with different exposed facets can enhance the electron-hole separation. Thanks to homojunction and surface defects, the defect-rich Cl-doped Bi2S3homojunction nanorods display 19 and 45 times improved Cr (VI) photoreduction rate than the Bi2S3and BiOCl.
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影响因子：
29.4
作者：
Rath, Arup K.;Bernechea, Maria;Konstantatos, Gerasimos
通讯作者：
Konstantatos, Gerasimos
用于高效光催化的 Bi2S3 纳米棒的湿化学合成
影响因子：
3
作者：
Xinjun Wang;Xiaofang Peng;Mengdong He;Zhongzhi Sheng
通讯作者：
Zhongzhi Sheng
原位Fe掺杂g-C3N4多相催化剂通过光催化-Fenton反应具有丰富的光催化性能去除复杂废水
影响因子：
22.1
作者：
Hu, Jinshan;Zhang, Pengfei;Cui, Wenquan
通讯作者：
Cui, Wenquan
DOI：
10.1039/c9en00957d
发表时间：
2019-12
期刊：
Environmental Science: Nano
影响因子：
--
作者：
Hui Li;Fang Deng;Yang Zheng;L. Hua;Chunhua Qu;Xubiao Luo
通讯作者：
Hui Li;Fang Deng;Yang Zheng;L. Hua;Chunhua Qu;Xubiao Luo
影响因子：
15
作者：
Bin‐Bin Yu;Xing Zhang;Yan Jiang;Jie Liu;L. Gu;Jinsong Hu;L. Wan
通讯作者：
Bin‐Bin Yu;Xing Zhang;Yan Jiang;Jie Liu;L. Gu;Jinsong Hu;L. Wan