Highly Efficient Removal of VOCs at Low Concentrations by Low-Cost Biochar-Based Zr-MOF Adsorbents DOI

Shu-Huan Chen,

Zhenxia Du, Huma Javeria

et al.

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

Published: May 15, 2025

Despite the low concentrations of volatile organic compounds (VOCs) indoors, they still pose significant health concerns. Therefore, there is an urgent need to prepare adsorbents remove low-concentration VOCs indoors. In this study, biochar-based MOF composites (UIO-66@PSB and UN-66@PSB) were efficaciously prepared optimized by a straightforward one-pot method. After being optimized, UIO-66@PSB UN-66@PSB characterized SEM-EDX, XRD, FTIR, XPS, BET. Toluene acetaldehyde, as typical indoor pollutants, chosen adsorbates examine adsorption performances adsorbents. The results demonstrated that both exhibited excellent ability for toluene acetaldehyde while retaining effective performance even under conditions high humidity. PSO model Freundlich in characterizing characteristics toluene, Langmuir similarly acetaldehyde. Additionally, after 5 adsorption-desorption cycles, can maintain good stability. DFT revealed π-π interaction plays pivotal role with presence amino group shown augment phenomenon. Conversely, electrostatic emerges dominant force acetaldehydes. When materials placed simulated chamber observe property real sample, removal rates could reach 90.85 95.73%, respectively. This work indicated composites, which are readily recyclable, have great potential absorb rooms or vehicles.

Language: Английский

Highly Efficient Removal of VOCs at Low Concentrations by Low-Cost Biochar-Based Zr-MOF Adsorbents DOI

Shu-Huan Chen,

Zhenxia Du, Huma Javeria

et al.

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

Published: May 15, 2025

Despite the low concentrations of volatile organic compounds (VOCs) indoors, they still pose significant health concerns. Therefore, there is an urgent need to prepare adsorbents remove low-concentration VOCs indoors. In this study, biochar-based MOF composites (UIO-66@PSB and UN-66@PSB) were efficaciously prepared optimized by a straightforward one-pot method. After being optimized, UIO-66@PSB UN-66@PSB characterized SEM-EDX, XRD, FTIR, XPS, BET. Toluene acetaldehyde, as typical indoor pollutants, chosen adsorbates examine adsorption performances adsorbents. The results demonstrated that both exhibited excellent ability for toluene acetaldehyde while retaining effective performance even under conditions high humidity. PSO model Freundlich in characterizing characteristics toluene, Langmuir similarly acetaldehyde. Additionally, after 5 adsorption-desorption cycles, can maintain good stability. DFT revealed π-π interaction plays pivotal role with presence amino group shown augment phenomenon. Conversely, electrostatic emerges dominant force acetaldehydes. When materials placed simulated chamber observe property real sample, removal rates could reach 90.85 95.73%, respectively. This work indicated composites, which are readily recyclable, have great potential absorb rooms or vehicles.

Language: Английский

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