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Issue 15, 2018
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One-step green synthesis of silver nanobelts assisted by sodium carboxymethylcellulose for catalytic reduction of 4-nitrophenol

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Abstract

Large-scale silver nanobelts (AgNBs) were prepared by a one-step method at near room temperature with high catalytic activity for 4-nitrophenol (4-NP) reduction to 4-aminophenol. This strategy was simple and green owing to the reasonable application of sodium carboxymethylcellulose (CMC) as a structure-directing agent and ascorbic acid (AA) as a reducing agent, avoiding extreme temperatures, tedious procedures, environmentally unfriendly additives, organic solvents and complicated apparatus. Most AgNBs reached lengths of 50 μm with some reaching ∼86 μm; these AgNBs were produced from large round nanoplates with thicknesses of ∼58 nm. By tuning the CMC concentration, AgNO3/AA ratio and temperature, the product morphology changed from one-dimensional nanobelts to three-dimensional pie-like, brick-like and hierarchical microstructures. Benefiting from their slender and unique laced structure, the AgNBs showed superior catalytic activity for 4-NP reduction. Additionally, the reaction rate constant and activity factor of the AgNBs reached 1.74 × 10−2 s−1 and 87.00 s−1 g−1, respectively (∼11.75, 6.61 and 8.13 times higher than the activities of the pie-like, brick-like and hierarchical Ag microstructures). This method not only successfully prepared AgNBs using a simple, green approach, further broadening the application of CMC to control metal nanomaterial morphologies, but may also be applied to the preparation of other kinds of nanomaterials.

Graphical abstract: One-step green synthesis of silver nanobelts assisted by sodium carboxymethylcellulose for catalytic reduction of 4-nitrophenol

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Publication details

The article was received on 08 Jan 2018, accepted on 03 Mar 2018 and first published on 05 Mar 2018


Article type: Paper
DOI: 10.1039/C8CE00031J
Citation: CrystEngComm, 2018,20, 2135-2143
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    One-step green synthesis of silver nanobelts assisted by sodium carboxymethylcellulose for catalytic reduction of 4-nitrophenol

    Y. Xia, Z. Gao, X. Liao, S. Yan, J. Han, X. Wang, C. Pan, Y. Zhang and W. Zhai, CrystEngComm, 2018, 20, 2135
    DOI: 10.1039/C8CE00031J

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