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Fabrication of High‐Performance Biomass Derived Carbon/Metal Oxide Photocatalysts with Trilevel Hierarchical Pores from Organic–Inorganic Network
Author(s) -
Wang He,
Qu Minghuan,
Wang Shulan,
Liu Xuan,
Li Li
Publication year - 2019
Publication title -
advanced sustainable systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.499
H-Index - 24
ISSN - 2366-7486
DOI - 10.1002/adsu.201800169
Subject(s) - materials science , nanocomposite , photocatalysis , oxide , fabrication , chemical engineering , carbon fibers , nanotechnology , porosity , composite number , catalysis , composite material , metallurgy , chemistry , organic chemistry , medicine , alternative medicine , pathology , engineering
Cost‐effective biomass derived carbon is considered a highly attractive energy material while high‐performance biochar based nanocomposites with well‐defined structures are very desirable candidates for this application. Herein, a novel and feasible fabrication method with renewable plane tree fluff as the carbon source is proposed to synthesize hierarchical porous titanium dioxide (TiO 2 )/carbon nanocomposites covering full length scales. A hybrid inorganic/organic framework with sub 10 nm feature sizes is used as the metal source for building up a high‐quality interface between phases, while bitemplates with ice and nanoscaled silica are introduced for porosity tuning. The as‐prepared TiO 2 /C nanocomposite presents superior photocatalytic activity for organic pollutant degradation and excellent photo‐electrochemical performance. More importantly, when loaded with a noble‐metal‐free carbide (Mo 2 C) prepared from a novel hydrothermal assisted fabrication route, it shows an outstanding hydrogen generation rate of 5.4 (UV) and 0.09 (visible light) mmol g −1 h −1 for water splitting, which are much better than the same sample loaded with Pt and benchmark P25. The present work proposes a dynamic and reliable tactic to synthesize a broad set of hierarchical porous metal oxide based nanocomposites, which is of far‐reaching significance for the development of sustainable technology for environmental, energy, and catalysis applications.