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Polyoxometalate-loaded Nanocellulose Sponge as a Novel Catalyst for the Regioselective Hydroboration of Phenylacetylene
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Author NameAffiliation
GuoQing Yang1 1. Key Lab of Science and Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, China 
CongCong Zhang1 1. Key Lab of Science and Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, China 
BiJia Wang1,2,* 1. Key Lab of Science and Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, China
2. Innovation Center for Textile Science and Technology of DHU, Donghua University, Shanghai, 201620, China 
ZhiPing Mao1,2 1. Key Lab of Science and Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, China
2. Innovation Center for Textile Science and Technology of DHU, Donghua University, Shanghai, 201620, China 
Hong Xu1,2 1. Key Lab of Science and Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, China
2. Innovation Center for Textile Science and Technology of DHU, Donghua University, Shanghai, 201620, China 
Yi Zhong1,2 1. Key Lab of Science and Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, China
2. Innovation Center for Textile Science and Technology of DHU, Donghua University, Shanghai, 201620, China 
XueLing Feng1,2 1. Key Lab of Science and Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, China
2. Innovation Center for Textile Science and Technology of DHU, Donghua University, Shanghai, 201620, China 
XiaoFeng Sui1,2,* 1. Key Lab of Science and Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, China
2. Innovation Center for Textile Science and Technology of DHU, Donghua University, Shanghai, 201620, China 
Fund Project:This work was financially supported by the Fundamental Research Funds for the Central Universities (No. 2232018A3-04, No. 2232018-02, and No. 2232018G-043) and the Program of Introducing Talents of Discipline to Universities (No. 105-07-005735).
 
Abstract:In this work, an amino-modified cellulose nanofiber sponge was prepared and used as a support for polyoxometalate (POM) catalysts with a high loading efficiency. Fourier transform infrared spectroscopy, thermogravimetric analysis, and energy-dispersive X-ray spectroscopy revealed that an Anderson-type POM, (NH4)4[CuMo6O18(OH)6]·5H2O was successfully immobilized on the sponge based on electrostatic interactions. Morphological analysis indicated that the POM-loaded sponge retained its porous structure and that the POM was homogeneously distributed on the sponge walls. The POM-loaded sponge exhibited excellent mechanical properties by recovering 79.9% of its original thickness following a 60% compression strain. The POM-loaded sponge was found to effectively catalyze the hydroboration of phenylacetylenes, yielding excellent conversion and regioselectivity of up to 96% and 99%, respectively. Its catalytic activity remained unchanged after five reuse cycles. These findings represent a scalable strategy for immobilizing POMs on porous supports.
keywords:cellulose nanofiber  polyoxometalates  catalyst immobilization  hydroboration  heterogeneous catalyst
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