Copper phthalocyanine as an efficient and reusable heterogeneous catalyst for direct hydroxylation of benzene to phenol under mild conditions

Tailorable synthesis of heterogeneous enzyme–copper nanobiohybrids and their application in the selective oxidation of benzene to phenol

“…27 Recently, a few examples have been described in the literature of the application of Cu complexes in the monohydroxylation of benzene, although in most cases, low or moderate yields were obtained and total selectivity was not achieved. [26][27][28][29][30][31][32] In this work, different Cu nanobiohybrids have been synthesized for the first time via an in situ controllable Cu species and nanoparticle size in a protein host network and their properties have been demonstrated using X-ray diffraction (XRD) and transmission electron microscopy (TEM).…”

A novel and low-cost CuPc@C catalyst derived from the compounds of sunflower straw and copper phthalocyanine pigment for oxygen reduction reaction

“…4c, the Cu 2p spectrum have two strong peaks, one located at 933.95 eV and another located at 953.33 eV, corresponding to the electron states of Cu 2p 3/2 and Cu 2p 1/2 , indicating the presence of Cu 2+ from CuPc. 39,44 The binding energy of copper atoms (in Cu 2p 3/2 electron state) is 933.95 eV, showing that the copper atoms in CuPc particles is Cu(II). 45,46 In the CuPc molecule, the copper atom bonded with nitrogen atoms through coordinate bonds.…”

“…From the ne spectrum of C 1s (Fig. 4b), it contains two peaks, one at 284.9 eV and another at 286.3 eV, which refer to the aromatic carbon and carbon atoms in the C-N bond, 33,44 respectively. As shown in Fig.…”

Trans‐metallated chlorophyllin by copper supported on silica‐coated magnetic nanoparticles as an efficient and green catalyst for the synthesis of furan‐2(5H)‐ones

“…Figure 9 (b) shows two strong bands located at 960.3 and 936.9 eV referred to the spin‐orbit components of Cu 2p 1/2 and Cu 2p 3/2 resulting in an oxidation state of (II) for copper in the Fe 3 O 4 @SiO 2 ‐NH 2 ‐Chln‐Cu composite. Moreover, the peaks at 927.8 and 953.5 eV are appeared due to the shakeup satellites [43]. The high‐resolution spectrum of Fe is depicted in Figure 9 (c).…”