Amine Functionalization and Structural Design for Constructing Tubular MoS2-Based Composites through an APTES-Assisted Self-Templating Strategy DOI
Yan Chen, Huanhuan Li,

Jingli Xu

et al.

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: May 19, 2025

MoS2-based composites have attracted considerable attention in catalysis owing to their exceptional catalytic properties. However, challenges such as severe nanosheets (NSs) aggregation and inherent difficulties functionalization significantly hindered practical application. Herein, one-dimensional (1D) APTES microtubes decorated with MoS2 NSs (APTES@MoS2) were synthesized through a self-template-directed synthesis approach. Comprehensive analysis confirmed that APTES@MoS2 exhibited abundant amine groups well high active sites for noble metal recovery. Utilizing capturing agents, intrinsic self-reduction properties chemical stability exploited evaluate efficacy recovering Ag+, Au3+, Pd2+ ions. The resultant APTES@MoS2-Au, Ag, Pd demonstrated the conversion of 4-nitrophenol (4-NP). Moreover, MoO3@APTES precursors can be used versatile templates obtain series tubular structured APTES, APTES@SiO2, APTES@PDA, APTES@NiMoO4 microtubes, greatly widening application precursors. This study introduces novel approach fabricate economically viable, ultra-active molybdenum disulfide (MoS2)-engineered nanohybrids, demonstrating promise advanced applications electrochemical energy transduction systems biomedical diagnostic technologies.

Language: Английский

Surface Engineering‐Induced d‐Band Center Down‐Regulation in High‐Entropy Alloy Nanowires for Enhanced Nanozyme Catalysis DOI Creative Commons

Kaiqiang Feng,

Hanting Wang, Song Zhou

et al.

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: April 7, 2025

Abstract High‐entropy alloys (HEAs) have garnered extensive attention owing to their broad compositional tunability and high catalytic activity. However, precisely modulating the enzyme‐like activity of HEAs enhancing biocompatibility for biological applications remain severely challenging. Herein, PtRuFeCoNi HEA nanowires (NWs) are synthesized by adjusting metal composition surface‐engineered with polydopamine (PDA) form NWs@PDA nanozymes (HEzymes@PDA) superior photothermal properties. Density functional theory calculations Sabatier principle reveal that self‐polymerized PDA surface engineering moderately lowers d‐band center HEAs, optimizes charge distribution, enhances adsorption–desorption efficiency substrates. As a proof‐of‐concept, HEzymes@PDA synergistically integrated hydrogels biosensing analysis. This study presents an innovative paradigm designing highly active via demonstrates immense potential in sensing applications.

Language: Английский

Citations

0
Photoswitchable Antioxidant and Prooxidant Activities of Mg-Doped Carbon Dot Nanozymes as Antibacterial and Anti-Inflammatory Agents DOI
Jinyu Shi, Yuxin Zhang,

Xiangyang Fang

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: 17(18), P. 26467 - 26479

Published: April 28, 2025

Multienzymatic nanozymes hold great potential in therapeutics due to their higher catalytic efficiency and multifunctionality. However, flexibly switching the antioxidant prooxidant activities of multienzymic at same lesion remains a challenge. Herein, we design magnesium-doped carbon dot (Mg-CD) with photoswitchable under physiological conditions. The Mg-CD exhibit superoxide dismutase (SOD)-like activity can scavenge singlet oxygen hydroxyl radicals without illumination. Interestingly, be converted oxidase-like visible light illumination, producing anions. mechanism switchable is attributed fact that coordination between magnesium CD skeleton enhances excited-state electron transfer states energy triplet electrons. Therefore, Mg-CDs act as antibacterial anti-inflammatory agents. rates exceeding 99% within 5 min They reactive species, thereby showing excellent capacity treating inflammatory wounds caused by lipopolysaccharide. These offer an effective strategy for better manipulating versatility nanozymes, expanding intelligent biomedical applications.

Language: Английский

Citations

0
Functionalized pNIPAM-DNA Hydrogel Colorimetric Platform for Visual Detection of Low-Mass Soluble β-Amyloid Oligomers DOI
Jia Chen,

X Ouyang,

Chenxiao Yu

et al.

Analytical Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: May 7, 2025

Low-mass soluble β-amyloid oligomers (LSAβO) are critical Alzheimer's disease (AD) biomarkers with significant diagnostic and therapeutic potential. However, their application in early screening detection is limited by the reliance on complex analytical instruments procedures. To address this, we developed a visual sensing platform for LSAβO using functionalized pNIPAM-DNA hydrogel. Exploiting temperature-responsive nature of pNIPAM, hydrogel selectively incorporates enriches from solution via temperature-induced expansion contraction. binding to aptamers triggers formation G-quadruplex DNAzymes, which catalyze oxidation 3,3',5,5'-tetramethylbenzidine generate visible colorimetric signal. The hydrogel's small pore size further enhances selectivity excluding larger during real sample analysis. This sensor exhibits linear range 0.1-7.5 nM limit 50 pM. Combining enrichment exclusion, this provides cost-effective, highly sensitive, selective, high-throughput approach preliminary detection.

Language: Английский

Citations

0
Amine Functionalization and Structural Design for Constructing Tubular MoS2-Based Composites through an APTES-Assisted Self-Templating Strategy DOI
Yan Chen, Huanhuan Li,

Jingli Xu

et al.

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: May 19, 2025

MoS2-based composites have attracted considerable attention in catalysis owing to their exceptional catalytic properties. However, challenges such as severe nanosheets (NSs) aggregation and inherent difficulties functionalization significantly hindered practical application. Herein, one-dimensional (1D) APTES microtubes decorated with MoS2 NSs (APTES@MoS2) were synthesized through a self-template-directed synthesis approach. Comprehensive analysis confirmed that APTES@MoS2 exhibited abundant amine groups well high active sites for noble metal recovery. Utilizing capturing agents, intrinsic self-reduction properties chemical stability exploited evaluate efficacy recovering Ag+, Au3+, Pd2+ ions. The resultant APTES@MoS2-Au, Ag, Pd demonstrated the conversion of 4-nitrophenol (4-NP). Moreover, MoO3@APTES precursors can be used versatile templates obtain series tubular structured APTES, APTES@SiO2, APTES@PDA, APTES@NiMoO4 microtubes, greatly widening application precursors. This study introduces novel approach fabricate economically viable, ultra-active molybdenum disulfide (MoS2)-engineered nanohybrids, demonstrating promise advanced applications electrochemical energy transduction systems biomedical diagnostic technologies.

Language: Английский

Citations

0