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Hollow S‐ZIF‐(1:2.5)@NixSy as Highly Efficient Catalyst for 4‐Nitrophenol and Dye Reduction
European Journal of Inorganic Chemistry ( IF 2.2 ) Pub Date : 2020-09-14 , DOI: 10.1002/ejic.202000452
Yongcen Lin 1, 2 , Xue Dong 1, 2 , Lang Zhao 1
Affiliation  

Mesoporous catalyst S‐ZIF‐(1:2.5)@NixSy was prepared using ZIF‐(1:2.5) as a precursor. These composite materials were characterized by using scanning microscope (SEM), transmission electron microscopy(TEM), X‐ray diffraction (XRD), X‐ray photoelectron spectroscopy (XPS) and N2 adsorption‐desorption techniques, and studied as catalysts for the reduction of 4‐nitrophenol (4‐NP) to 4‐aminophenol (4‐AP), congo red (CR), methyl orange (MO), and methylene blue (MB). The BET specific surface area and pore volume of the catalyst were 167.49 m2/g and 0.32 m3/g respectively. The doping of S improves the catalytic performance of the catalyst. S‐ZIF‐(1:2.5)@NixSy showed an excellent catalytic rate (kapp = 22.3 × 10–3/s) in the experiment of reductive degradation of 4‐NP. In addition, S‐ZIF‐(1:2.5)@NixSy also showed good catalytic activity for the degradation of CR, MB, and MO, completing the catalytic reaction within 60, 60, and 90 s, respectively. The kapp values for CR, MB, and MO are 29.0 × 10–3/s, 44.0.0 × 10–3/s, and 29.2 × 10–3/s, respectively.

中文翻译:

空心S‐ZIF‐(1:2.5)@NixSy作为高效的催化剂,可实现4-硝基苯酚和染料的还原

使用ZIF-(1:2.5)作为前体制备了介孔催化剂S-ZIF-(1:2.5)@Ni x S y。通过使用扫描显微镜(SEM),透射电子显微镜(TEM),X射线衍射(XRD),X射线光电子能谱(XPS)和N 2吸附-脱附技术对这些复合材料进行了表征,并对其进行了研究。将4-硝基苯酚(4-NP)还原为4-氨基苯酚(4-AP),刚果红(CR),甲基橙(MO)和亚甲基蓝(MB)。催化剂的BET比表面积和孔体积分别为167.49m 2 / g和0.32m 3 / g。S的掺杂改善了催化剂的催化性能。S‐ZIF‐(1:2.5)@Ni x S y在4-NP的还原降解实验中显示出优异的催化速率(k app = 22.3×10 –3 / s)。此外,S- ZIF-(1:2.5)@Ni x S y对CR,MB和MO的降解也显示出良好的催化活性,分别在60、60和90 s内完成了催化反应。CR,MB和MO的k app值分别为29.0×10 –3 /s、44.0.0×10 –3 / s和29.2×10 –3 / s。
更新日期:2020-09-23
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