Adsorption of Phenol and <i>p</i>‑Nitrophenol from Aqueous Solutions on Metal–Organic Frameworks: Effect of Hydrogen Bonding

Three metal–organic frameworks (MOFs), MIL-100­(Fe, Cr) and NH₂-MIL-101­(Al), were prepared, and their adsorption equilibria for phenol and <i>p</i>-nitrophenol (PNP) from water were investigated. All three MOFs show similar and limited adsorption capacities for phenol, but NH₂-MIL-101­(Al) reveals exceptional adsorption capacity for PNP, greatly exceeding those of MIL-100­(Fe, Cr). MIL-100­(Fe, Cr) possess similar adsorption affinity for phenol and PNP, which suggests that the effect of metal ions and the coordinatively unsaturated sites in MOFs show negligible effect for phenol and PNP adsorption from water. NH₂-MIL-101­(Al) exhibits superior adsorption capacity for PNP and uniquely higher adsorption selectivity for PNP over phenol than a benchmark activated carbon. The remarkable adsorption affinity is attributed to the hydrogen bonding between PNP and the amino groups in NH₂-MIL-101­(Al). Phenol and PNP displayed a fast adsorption kinetics on NH₂-MIL-101­(Al) and followed a pseudo-second-order kinetic model. This work highlights that introducing functional groups into MOFs through an organic linker is a promising way to tailor MOFs for aqueous adsorption and separation

Test photo of MTS electronic universal testing machine.

<p>Test photo of MTS electronic universal testing machine.</p

Glucose metabolic index, inflammatory markers and endothelium-derived factors.

Glucose metabolic index, inflammatory markers and endothelium-derived factors.</p

Pearson correlation coefficients and <i>P</i> values among the changes in variables (n = 48).

Pearson correlation coefficients and P values among the changes in variables (n = 48).</p

Flow and fracture behavior of aluminum alloy 6082-T6 at different tensile strain rates and triaxialities - Fig 3

<p>(a) Split Hopkinson pressure bar (SHTB) testing apparatus; (b) The geometry of the SHTB-specimen; (c) A notched specimen sandwiched between the incident bar and the transmission bar.</p

Change in pulmonary diffusion capacity after 24-week interventions.

Diffusion capacity of the lungs for carbon monoxide (DLCO) was significantly improved (P < 0.001) in Group A and Group B. There was no DLCO change in Group C. Black dots denote the individual data and the dashed gray lines indicate the group mean.</p

Basic physical and physiological characteristics.

This study evaluated the effect of 24-week Taichi training and Taichi plus resistance band training on pulmonary diffusion capacity and glycemic control in patients with Type 2 diabetes mellitus (T2DM). Forty-eight patients with T2DM were randomly divided into three groups: Group A—Taichi training: practiced Taichi 60 min/day, 6 days/week for 24 weeks; Group B—Taichi plus resistance band training: practiced 60-min Taichi 4 days/week plus 60-min resistance band training 2 days/week for 24 weeks; and Group C–controls: maintaining their daily lifestyles. Stepwise multiple regression analysis was applied to predict diffusion capacity of the lungs for carbon monoxide (DLCO) by fasting blood glucose, insulin, glycosylated hemoglobin (HbA1c), tumour necrosis factor alpha (TNF-α), von Willebrand Factor (vWF), interleukin-6 (IL-6), intercellular adhesion molecule 1 (ICAM-1), endothelial nitric oxide synthase (eNOS), nitric oxide (NO), endothelin-1 (ET-1), vascular endothelial growth factor, and prostaglandin I-2. Taichi with or without resistance band training significantly improved DLCO, increased insulin sensitivity, eNOS and NO, and reduced fasting blood glucose, insulin, HbA1c, TNF-α, vWF, IL-6, ICAM-1, and ET-1. There was no change in any of these variables in the control group. DLCO was significantly predicted (R2 = 0.82) by insulin sensitivity (standard-β = 0.415, P</div

(a) Stress triaxialities and (b) equivalent plastic strain profiles of smooth and notched specimens at the minimum cross section at the time of fracture.

<p>(a) Stress triaxialities and (b) equivalent plastic strain profiles of smooth and notched specimens at the minimum cross section at the time of fracture.</p

PLOS ONE clinical studies checklist.

This study evaluated the effect of 24-week Taichi training and Taichi plus resistance band training on pulmonary diffusion capacity and glycemic control in patients with Type 2 diabetes mellitus (T2DM). Forty-eight patients with T2DM were randomly divided into three groups: Group A—Taichi training: practiced Taichi 60 min/day, 6 days/week for 24 weeks; Group B—Taichi plus resistance band training: practiced 60-min Taichi 4 days/week plus 60-min resistance band training 2 days/week for 24 weeks; and Group C–controls: maintaining their daily lifestyles. Stepwise multiple regression analysis was applied to predict diffusion capacity of the lungs for carbon monoxide (DLCO) by fasting blood glucose, insulin, glycosylated hemoglobin (HbA1c), tumour necrosis factor alpha (TNF-α), von Willebrand Factor (vWF), interleukin-6 (IL-6), intercellular adhesion molecule 1 (ICAM-1), endothelial nitric oxide synthase (eNOS), nitric oxide (NO), endothelin-1 (ET-1), vascular endothelial growth factor, and prostaglandin I-2. Taichi with or without resistance band training significantly improved DLCO, increased insulin sensitivity, eNOS and NO, and reduced fasting blood glucose, insulin, HbA1c, TNF-α, vWF, IL-6, ICAM-1, and ET-1. There was no change in any of these variables in the control group. DLCO was significantly predicted (R2 = 0.82) by insulin sensitivity (standard-β = 0.415, P</div

Inclusivity in global research.

This study evaluated the effect of 24-week Taichi training and Taichi plus resistance band training on pulmonary diffusion capacity and glycemic control in patients with Type 2 diabetes mellitus (T2DM). Forty-eight patients with T2DM were randomly divided into three groups: Group A—Taichi training: practiced Taichi 60 min/day, 6 days/week for 24 weeks; Group B—Taichi plus resistance band training: practiced 60-min Taichi 4 days/week plus 60-min resistance band training 2 days/week for 24 weeks; and Group C–controls: maintaining their daily lifestyles. Stepwise multiple regression analysis was applied to predict diffusion capacity of the lungs for carbon monoxide (DLCO) by fasting blood glucose, insulin, glycosylated hemoglobin (HbA1c), tumour necrosis factor alpha (TNF-α), von Willebrand Factor (vWF), interleukin-6 (IL-6), intercellular adhesion molecule 1 (ICAM-1), endothelial nitric oxide synthase (eNOS), nitric oxide (NO), endothelin-1 (ET-1), vascular endothelial growth factor, and prostaglandin I-2. Taichi with or without resistance band training significantly improved DLCO, increased insulin sensitivity, eNOS and NO, and reduced fasting blood glucose, insulin, HbA1c, TNF-α, vWF, IL-6, ICAM-1, and ET-1. There was no change in any of these variables in the control group. DLCO was significantly predicted (R2 = 0.82) by insulin sensitivity (standard-β = 0.415, P</div