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陈士夫老师课题组在Journal of Catalysis杂志发表论文-2018.2.4

 

          论文名称: Photocatalytic synthesis of Schiff base compounds in the coupled system of aromatic alcohols

                                and  nitrobenzene using CdXZn1−XS photocatalysts

 

          作者:    Yahui Wu a , b , Xiangju Ye b ,* , Sujuan Zhang a , Sugang Meng a , Xianliang Fu a , Xuchun Wang 

                                 b Xuemei Zhang b , Shifu Chen a , b,*

 

         单位:         a Key Lab of Clean Energy and Green Circulation, Huaibei Normal University, Huaibei 235000, PR  

                             China. 

                           b Department of Chemistry, Anhui Science and Technology University, Bengbu 233100, PR China.

 

摘要:       Achieving green synthesis and transformation of organics is always  an ambition   of scientists under mild

                    conditions. In this paper, a series of  CdXZn1 - X S (0 X 1) samples were synthesized by a simple

                    wet chemical  method using cadmium nitrate, zinc nitrate and sodium sulfide as precursors and were

                    thoroughly characterized by many techniques, including X-ray  diffraction, UV - vis absorption spectra,

                    nitrogen adsorption-desorption  isotherms, scanning electron microscopy, transmission electron

                    microscopy and  (photo)electrochemical measurements. The photocatalytic performance of the as-

                    prepared sampleswas evaluated by photocatalytic synthesis of Schiff base compounds in the coupled

                    system of benzyl alcohol and nitrobenzene under  visible light irradiation. Results reveal that when X is

                    0.78 (Cd0.78Zn0.22S), the  sample exhibits the highest photocatalytic performance. The yield of Schiff base 

                    is 55.2% under visible light illumination for 4 h, and the theoretical yields of benzaldehyde and aniline

                    could reach 96.6% and 67.9%, respectively. The  quantum efficiency (QE) of the sample with k = 450 ± 

                    10 nm is 15.8%. In  addition, many other Schiff base compounds were also synthesized from the  different

                    coupled systems of aromatic alcohols and nitrobenzene. A possible  reaction mechanism involving the

                    oxidation of benzyl alcohol to benzaldehyde  by photogenerated holes and the reduction of nitrobenzene to

                    aniline by photoinduced electrons, followed by a condensation reaction between  benzaldehyde and

                    aniline to generate Schiff base compound was proposed. It is  expected that the current work could offer

                    an avenue to fabricate a high- performance photocatalyst used in the fields of photocatalytic selective

                    organic transformations under mild conditions.

 

      Graphical abstract

      影响因子:6.844.

      分区情况:SCI 一区 .

论文链接: https://www.sciencedirect.com/science/article/pii/S0021951717304621

 

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