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A solid with a hierarchical tetramodal micro-meso-macro pore size distribution

Journal Article · · Nature Communications
DOI:https://doi.org/10.1038/ncomms3015· OSTI ID:1623916
 [1];  [2];  [3];  [3];  [4];  [5];  [3]
  1. Univ. of St. Andrews, Scotland (United Kingdom). School of Chemistry. EaStCHEM; DOE/OSTI
  2. Fudan Univ., Shanghai (China). Shanghai Key Lab. of Atmospheric Particle Pollution and Prevention (LAP). Dept. of Environmental Science and Engineering; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical Sciences Division
  3. Univ. of St. Andrews, Scotland (United Kingdom). School of Chemistry. EaStCHEM
  4. Univ. of Delaware, Newark, DE (United States). Dept. of Chemical and Biomolecular Engineering
  5. Oak Ridge, TN (United States). Chemical Sciences Division

Porous solids have an important role in addressing some of the major energy-related problems facing society. Here we describe a porous solid, a-MnO2, with a hierarchical tetramodal pore size distribution spanning the micro-, meso- and macro pore range, centred at 0.48, 4.0, 18 and 70 nm. The hierarchical tetramodal structure is generated by the presence of potassium ions in the precursor solution within the channels of the porous silica template; the size of the potassium ion templates the microporosity of a-MnO2, whereas their reactivity with silica leads to larger mesopores and macroporosity, without destroying the mesostructure of the template. The hierarchical tetramodal pore size distribution influences the properties of a-MnO2 as a cathode in lithium batteries and as a catalyst, changing the behaviour, compared with its counterparts with only micropores or bimodal micro/mesopores. The approach has been extended to the preparation of LiMn2O4 with a hierarchical pore structure.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division; National Natural Science Foundation of China (NSFC); Foundation of the Ministry of Education in China
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1623916
Journal Information:
Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 4; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (16)

The influence of large cations on the electrochemical properties of tunnel-structured metal oxides journal November 2016
Nanosize Control on Porous β-MnO2 and Their Catalytic Activity in CO Oxidation and N2O Decomposition journal May 2014
Multiscale Porous Interconnected Nanocolander Network with Tunable Transport Properties journal October 2014
Guided Assembly of Microporous/Mesoporous Manganese Phosphates by Bifunctional Organophosphonic Acid Etching and Templating journal April 2019
Porous Carbon Composites for Next Generation Rechargeable Lithium Batteries journal May 2017
Atomic‐Scale Spacing between Copper Facets for the Electrochemical Reduction of Carbon Dioxide journal March 2020
The Key Role of Nanocasting in Gold‐based Fe 2 O 3 Nanocasted Catalysts for Oxygen Activation at the Metal‐support Interface journal March 2019
Microporous Organically Pillared Layered Silicates (MOPS): A Versatile Class of Functional Porous Materials journal November 2018
A Core‐Shell Assembly of Hierarchical Porous Ni@C Nanospheres Synthesized from Metal‐Organic Framework for Electrochemical Energy Application journal March 2019
Performance and kinetic study on Pd/OMS-2 catalyst for CO catalytic oxidation: effect of preparation method journal September 2016
Trimodally porous SnO2 nanospheres with three-dimensional interconnectivity and size tunability: a one-pot synthetic route and potential application as an extremely sensitive ethanol detector journal March 2016
Mesoporous materials for energy conversion and storage devices journal May 2016
Multiscale adsorption and transport in hierarchical porous materials journal January 2016
Low-temperature catalytic oxidation of CO over highly active mesoporous Pd/CeO 2 –ZrO 2 –Al 2 O 3 catalyst journal January 2016
Role of templating agents in the spray drying and postcrystallization of lactose for the production of highly porous powders journal March 2018
Templated Growth of Crystalline Mesoporous Materials: From Soft/Hard Templates to Colloidal Templates journal January 2019

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