Role of surface hydroxyl groups of acid-treated natural zeolite on the heterogeneous catalytic ozonation of methylene blue contaminated waters

The catalytic ozonation of p-chloronitrobenzene (pCNB) in an aqueous solution using pumice-supported zinc oxyhydroxide (ZMP) as the catalyst was investigated. ZMP significantly enhanced the degradation efficiency in the heterogeneous catalytic ozonation compared with ozonation alone. The decomposition rate of the aqueous ozone increased 2.84-fold in the presence of ZMP. Catalytic ozone decomposition showed that pCNB is oxidized primarily by hydroxyl radicals (•OH) in ozonation/ZMP processes. This modification increases the density of surface hydroxyl groups as well as the pH at the point of zero charge (pHPZC) of pumice, resulting in the appearance of new ZnO and Zn(OH)2 crystalline phases. An investigation of the underlying mechanism confirms that ZnOOH loading promotes •OH initiation, which enhances the degradation of pCNB.

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Advantageous Role of Ir0 Supported on TiO2 Nanosheets in Photocatalytic CO2 Reduction to CH4: Fast Electron Transfer and Rich Surface Hydroxyl Groups

ACS Applied Materials & Interfaces ◽

10.1021/acsami.0c19233 ◽

2021 ◽

Vol 13 (5) ◽

pp. 6219-6228

Author(s):

Kunlin Tang ◽

Zhiqiang Wang ◽

Weixin Zou ◽

Hongyu Guo ◽

Yuchao Wu ◽

...

Keyword(s):

Electron Transfer ◽

Fast Electron ◽

Co2 Reduction ◽

Hydroxyl Groups ◽

Surface Hydroxyl ◽

Surface Hydroxyl Groups ◽

Tio2 Nanosheets

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Defective magnesium ferrite nano-platelets for the adsorption of As(V): The role of surface hydroxyl groups

Environmental Pollution ◽

10.1016/j.envpol.2017.12.050 ◽

2018 ◽

Vol 235 ◽

pp. 11-19 ◽

Cited By ~ 18

Author(s):

Can Wu ◽

Jingwei Tu ◽

Chen Tian ◽

Junjie Geng ◽

Zhang Lin ◽

...

Keyword(s):

Hydroxyl Groups ◽

Magnesium Ferrite ◽

Surface Hydroxyl ◽

Surface Hydroxyl Groups

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Bidimensional Solvation and Delocalisation of Electrons at the Surface of an Insulating Oxide: The Role of Surface Hydroxyl Groups on MgO

ChemPhysChem ◽

10.1002/cphc.200400466 ◽

2004 ◽

Vol 5 (12) ◽

pp. 1897-1900 ◽

Cited By ~ 9

Author(s):

Mario Chiesa ◽

Maria Cristina Paganini ◽

Elio Giamello

Keyword(s):

Hydroxyl Groups ◽

Surface Hydroxyl ◽

Surface Hydroxyl Groups

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Role of surface hydroxyl groups in promoting room temperature CO sensing by Pd-modified nanocrystalline SnO2

Journal of Solid State Chemistry ◽

10.1016/j.jssc.2010.07.017 ◽

2010 ◽

Vol 183 (10) ◽

pp. 2389-2399 ◽

Cited By ~ 63

Author(s):

Artem V. Marikutsa ◽

Marina N. Rumyantseva ◽

Lada V. Yashina ◽

Alexander M. Gaskov

Keyword(s):

Room Temperature ◽

Hydroxyl Groups ◽

Surface Hydroxyl ◽

Surface Hydroxyl Groups

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Role of Surface Hydroxyl Groups on Single-Atomic Rh1/ZrO2 Catalyst for Direct Methane Oxidation

Chemical Communications ◽

10.1039/d0cc07514k ◽

2021 ◽

Author(s):

Gunjoo Kim ◽

Gihun Kwon ◽

Hyunjoo Lee

Keyword(s):

Hydrothermal Treatment ◽

Methane Oxidation ◽

Hydroxyl Groups ◽

Surface Hydroxyl ◽

Surface Hydroxyl Groups ◽

Rh Catalyst ◽

Zro2 Catalyst

Single atomic Rh catalyst immobilized on zirconia (Rh1/ZrO2) was modified by hydrothermal treatment to have surface hydroxyl groups and used for direct methane oxidation. Both O2 and H2O2 were used...

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Role of acid sites and surface hydroxyl groups in isophthalonitrile hydrogenation catalyzed by supported Ni–Co catalysts

RSC Advances ◽

10.1039/c5ra01007a ◽

2015 ◽

Vol 5 (34) ◽

pp. 26465-26474 ◽

Cited By ~ 11

Author(s):

Chang Liu ◽

Ruijun Hou ◽

Tiefeng Wang

Keyword(s):

Acid Sites ◽

Side Reactions ◽

Hydroxyl Groups ◽

Surface Hydroxyl ◽

Co Catalysts ◽

Surface Hydroxyl Groups ◽

Hydrogenation Reactions ◽

Supported Ni

For hydrogenation of isophthalonitrile, the metal sites catalyzed the hydrogenation reactions, while the acid sites (including the original and new ones) and the surface hydroxyl groups catalyzed the condensation side reactions.

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