Oxidative degradation of acid red 73 in aqueous solution over a three-dimensional OMS-2 nanomaterial

Activation of O2 over three-dimensional manganese oxide nanoprisms under ambient conditions towards oxidative removal of aqueous organics

“…S1 in the ESI †) has also provided powerful evidence that Bi was more easily doped into the catalyst than Ce since the actual amount of Bi (4.05 wt%) was more than the amount of Ce (2.40 wt%), which is in agreement with the result of ICP-AES in our previous report. 72 Since we focused on the catalytic activity of doped materials in this work, the redox ability and surface oxygen species were carefully studied by H 2 -TPR and O 2 -TPD. For H 2 -TPR of OMS-2-based catalysts, the reduction process contains the reactions from MnO 2 to Mn 3 O 4 to MnO between 150 °C Environmental Science: Nano Paper and 420 °C, and the reduction peaks between 150 °C and 300 °C result from the reduction of surface adsorbed oxygen species of the catalysts.…”

“…The three-dimensional material demonstrated a nanoprism morphology and could be a solid recyclable oxidant instead of a catalyst to directly oxidize aqueous dyes in high degradation rates under ambient conditions. 72 In this work, a co-doping strategy was developed for the first time for the preparation of cryptomelane-type three-dimensional MnO 2 nanoprism (Ce–Bi-OMS-2), which shows remarkably enhanced catalytic ability for the activation of O 2 under ambient conditions (Fig. 1).…”

Boosting Interfacial Electron Transfer between Pd and ZnTi-LDH via Defect Induction for Enhanced Metal–Support Interaction in CO Direct Esterification Reaction

“…Figure a shows the O 1s spectrum of the ZnTi-LDH support, which exhibits two major peaks for oxygen atoms. The peak at around 530.1 eV is attributed to lattice oxygen. , Notably, the peak at 531.7 eV is ascribed to the oxygen atoms in the vicinity of oxygen vacancies, , appearing in Pd/ZnTi-LDH in contrast to Pd/ZnAl-LDH (Figure S12c). The oxygen vacancies were further confirmed by ESR, which exhibits a more intense ESR signal at the g value of 2.003 for Pd/ZnTi-LDH compared with Pd/ZnAl-LDH (Figure b), manifesting that the electrons are trapped by oxygen vacancies .…”

Adsorption of Rutin from Aqueous Solution over an OMS‐2‐Modified ZrO2 Nanocomposite

“…[1,4,5] Metal oxides, such as zirconia, alumina, titania, manganese oxide and zinc oxide, are widely applied as supported materials, adsorption materials and catalysts in many fields. [6][7][8][9][10][11][12][13][14][15] In particular, ZrO 2 has advantages including non-toxicity, good chemical and pH (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14) stability, promoted biocompatibility, high mechanical strength and resistance of interference. [16][17][18] Moreover, rich oxygen-related groups and abundant unsaturated Lewis acid-base pairs (Zr 4 + -O 2À ) on the surface enable ZrO 2 to be regarded as a potential material for adsorption and separation of organic compounds from aqueous solution.…”