APPLIED CATALYSIS B-ENVIRONMENTAL
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2024
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IF 20.2
Ruichen Geng,Ranran Wei,Xuewen Wei,Xiaoying Zhang,Yaxuan Li,Zekai Shen,Yinglong Wang,Liang Wang,Shuli Yin
Designing highly active and selective electrocatalytic catalysts to accelerate 5-hydroxymethylfurfural (HMF) oxidation is significant but challenging in biomass upgrading. Herein, the high-entropy alloy AuCuAgPdNi nanowires catalyst with a self-complementary effect via a simple one-pot wet chemical method is reported. Notably, AuCuAgPdNi NWs show excellent activity and selectivity during HMF oxidation with a 2,5-furandicarboxylic acid (FDCA) yield of 95.5 % and a selectivity of 98.4 % at the potential of 1.60 V vs. RHE. Moreover, a flow electrolytic cell is designed to couple the high-performance HMF oxidation reaction (HMFOR) at the anode and the faradaic efficiency of the hydrogen evolution reaction approaching 100 % at the cathode. In-situ Fourier transform infrared (in-situ FTIR) results reveal the relationship between the HMFOR pathway and potential. Theoretical calculation shows that AuCuAgPdNi NWs promote the exchangeability of surface electrons through the self-complementary effect generated by d - d orbital coupling, thus achieving efficient HMFOR. This work provides insights into the innovative synthesis and mechanisms inherent catalytic of high-entropy alloy systems and offers ideas for the value-added conversion of biomass.
研究领域:
催化化学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
ORGANIC & BIOMOLECULAR CHEMISTRY
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2016
·Vol. 14
·期 17
·4039-4045
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IF 3.559
Le Fang,Yuanli Hu,Qiang Li,Shutao Xu,Manivannan Kalavathi Dhinakarank,Weitao Gong,Guiling Ning
A novel AABB-type heteromultitopic monomer (APOPV), having a self-complementary perpendicular structure, could solely self-assemble to fluorescent cross-linked supramolecular polymers. Interestingly, the supramolecular gel film shows a sensitive fluorescence change on exposure to acid and base vapor, endowing this system with a potential application in gas detection.
研究领域:
材料科学
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化学
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超分子化学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Zhuo-Ran Yang,Huimin Qin,Jing-Wen Fan,Kehan Du,Liya Qi,Dandan Hou,Hao Jiang,Jintao Zhu
Drug-resistant biofilm infection is an extremely serious clinical problem, that easily leads to failure of antibiotic treatment. Although gold nanoparticles (AuNPs) as photothermal agents have been widely used in biofilm eradication, there are still challenges to be addressed, such as insignificantly redshifted absorption and slow assembly process of aggregated AuNPs. Herein, we developed an acidity-activated dispersion-to-aggregation transition to enhance the accumulation of self-complementary zwitterionic peptide-decorated AuNPs for photothermal eradication of drug-resistant biofilm infections. AuNPs were decorated with self-complementary zwitterionic peptides (ZP1 and ZP2) coupled with pH-sensitive anhydride (DMA) and pH-insensitive anhydride (SA), respectively. ZP2-decorated AuNPs with DMA modification (AuNP@ZP2(DMA)) exhibited prolonged blood circulation and enhanced accumulation in acidic biofilm microenvironment. Moreover, the electrostatic attraction between self-complementary ligands drove AuNPs to form closely packed aggregates with strong near-infrared absorption, leading to in vivo photoacoustic imaging ability and photothermal effect against drug-resistant bacteria and fungus, as well as microbial biofilms. AuNP@ZP2(DMA) with longer charge domains and a polyethylene glycol oligomer spacer showed greater photothermal antimicrobial and biofilm resistance in vitro and in vivo . This study develops an innovative acidity-activated AuNP photothermal agent, which provides an effective approach for treatment of biofilm infections.
研究领域:
纳米技术
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生物医学工程
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药学
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微生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2022
·
IF 24.319
Hongdong Li,Mingzi Sun,Yue Pan,Juan Xiong,Haoyang Du,Yaodong Yu,Shouhua Feng,Zhenjiang Li,Jianping Lai,Bolong Huang,Lei Wang
Rational control of the compositions, morphologies and sizes of electrocatalyst are the key factors for achieving high performance of electrocatalytic reactions. Herein, a newly ultrathin PtRuRhCoNi high-entropy alloy nanowires (HEA-NWs) (~1.6 nm) catalyst is designed. The PtRuRhCoNi NWs/C achieved high mass activity of 7.68 A mg −1 PtRuRh , ultrahigh C1 selectivity of 78% for ethanol oxidation reaction. For hydrogen evolution reaction, the PtRuRhCoNi NWs/C also reached high mass activity, turnover frequency (11.99 A mg −1 PtRuRh , 31.9 s −1 , 0.5 M H 2 SO 4 and 8.07 A mg −1 PtRuRh , 26.7 s −1 , 1 M KOH at −0.05 V vs. RHE) and stability. Theoretical calculations demonstrated that the excellent electroactivity of HEA is benefited by the self-complementary effect through strong orbital coupling, which maximized the electroactivity towards both oxidation and reduction and preferred binding of key intermediate. The design of pH-universal multifunctional catalyst by rational control of the compositions, morphologies and sizes strategy can facilitate the research of advanced catalysts.
研究领域:
材料科学
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电化学
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纳米技术
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催化
✓ 已验证
DOI
高影响因子
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