Heterogenized Phosphinic Acid on UiO-66-NH2: A Bifunctional Catalyst for the Synthesis of Polyhydroquinolines

Askari, Saeed; Khodaei, Mohammad Mehdi; Jafarzadeh, Mohammad

doi:10.1007/s10562-021-03734-1

Cited by 8 publications

(4 citation statements)

References 68 publications

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“…UiO-66 had the characteristics of a larger specific surface area and outstanding structural stability, which indicated that it had great application potential in adsorption. As shown in Figure a, UiO-66 particles had a spherical morphology with smooth and irregular aggregates . As depicted in Figure b, MWCNT exhibited a significant aspect ratio, characterized by nanometer-scale diameter and micrometer-scale length, resulting in a large specific surface area.…”

Section: Resultsmentioning

confidence: 93%

“…As shown in Figure 2a, UiO-66 particles had a spherical morphology with smooth and irregular aggregates. 30 As depicted in Figure 2b, MWCNT exhibited a significant aspect ratio, characterized by nanometer-scale diameter and micrometer-scale length, resulting in a large specific surface area. Figure 2c−e depicts the combinations of UiO-66/MWCNT nanocomposites with varying proportions.…”

Section: Resultsmentioning

confidence: 98%

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UiO-66/Multiwalled Carbon Nanotube Nanocomposite-Coated Quartz Crystal Microbalance Gas Sensor for Discriminating Amine and Formaldehyde

Chen,

Duan,

et al. 2024

ACS Appl. Nano Mater.

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Amine gases and formaldehyde (HCHO) have been used as typical indicators to monitor the quality of marine fish products. However, current detection methods are time-consuming and complicated to preprocess and have limitations such as high technicality requirements. Therefore, developing a sensor capable of simultaneously detecting multiple amine gases and HCHO with high performance in a simple way remains a significant challenge. In this paper, trimethylamine (TMA), dimethylamine (DMA), ammonia gas (NH 3 ), and HCHO were tested by a quartz crystal microbalance (QCM) gas sensor modified with a UiO-66/multiwalled carbon nanotube (MWCNT) nanocomposite. The sensor was operated at room temperature (25 °C) and fixed humidity (35% RH), and the results showed that the limits of detection of the QCM gas sensor for TMA, DMA, NH 3 , and HCHO were 0.32, 0.52, 1.02, and 2.4 μmoL L −1 , respectively. At the same time, our sensor could be reused more than ten times without degradation of sensor signals and showed high stability even after a long storage period of up to 2 months. The adsorption mechanism of the UiO-66/MWCNT nanocomposite-based QCM gas sensor toward the target gases was simulated. Ultimately, salmon meat was examined using the sensor that had been prepared, and the detection outcomes were contrasted with the findings from the Kjeldahl nitrogen determination. The results indicated that refrigerated salmon began emitting target gases on the second day and gradually increased thereafter. By the fifth day, the concentration of the target gases reached the point of complete spoilage. Our platform may be a promising platform for basic research and versatile practical applications in food quality assessments.

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Section: Resultsmentioning

confidence: 93%

Section: Resultsmentioning

confidence: 98%

UiO-66/Multiwalled Carbon Nanotube Nanocomposite-Coated Quartz Crystal Microbalance Gas Sensor for Discriminating Amine and Formaldehyde

Chen,

Duan,

et al. 2024

ACS Appl. Nano Mater.

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“…Figure 4 shows the FT‐IR spectra of UiO‐66‐NH 2 and UiO‐66‐NH 2 /CNT‐X samples. It can be seen from the figure that the peaks at 658 cm −1 and 771 cm −1 belong to the stretching vibration of the Zr−O bond [19] . The peak at 1261 cm −1 corresponds to the bending vibration of the N−H bond [20] .…”

Section: Resultsmentioning

confidence: 94%

“…It can be seen from the figure that the peaks at 658 cm À 1 and 771 cm À 1 belong to the stretching vibration of the ZrÀ O bond. [19] The peak at 1261 cm À 1 corresponds to the bending vibration of the NÀ H bond. [20] In addition, the peak at 1397 cm À 1 is a typical benzene ring skeleton vibration, while the peak at 1580 cm À 1 corresponds to carboxylate stretching mode.…”

Section: Structural Characterizationsmentioning

confidence: 99%

The Preparation of UiO‐66‐NH₂/CNT Electrocatalyst and its High Catalytic Performance for Electrochemical Synthetic Ammonia in Neutral Electrolyte

Chen

Yin

et al. 2023

ChemistrySelect

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The electrochemical synthesis of ammonia is a sustainable green ammonia synthesis technology. The core reaction involved in this process-the nitrogen reduction reaction (NRR) is a slow kinetic reaction, which requires efficient catalysts to improve the ammonia yield rate. A series of UiO-66-NH 2 /CNT-X (X = 0.05, 0.10, 0.15, 0.20 g) electrocatalysts with different carbon nanotube (CNT) content were synthesized by hydrothermal method. UiO-66-NH 2 /CNT-0.15 with appropriate CNT content has the highest NH 3 yield of 1.85 × 10 À 10 mol cm À 2 s À 1 (22.644 μg h À 1 mg cat À 1) at À 0.3 V (vs. RHE), and the Faradaic efficiency (FE) is 37.78 %. The main reason is that the conductivity of CNT improves the charge transfer efficiency and ensures the effective electron conduction path of the catalyst. Besides, CNT in UiO-66-NH 2 /CNT-X composite material inhibits the aggregation of UiO-66-NH 2 particles, exposes more active sites and reduces the particle size of UiO-66-NH 2 . So, the synergistic effect between UiO-66-NH 2 particles and CNT improves the ammonia yield.

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Ultrasound-assisted adsorption of organic dyes in real water samples using zirconium (IV)-based metal-organic frameworks UiO-66-NH2 as an adsorbent

Assafi,

El Hadj Ali,

Almufarij

et al. 2023

Heliyon

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Heterogenized Phosphinic Acid on UiO-66-NH2: A Bifunctional Catalyst for the Synthesis of Polyhydroquinolines

Cited by 8 publications

References 68 publications

UiO-66/Multiwalled Carbon Nanotube Nanocomposite-Coated Quartz Crystal Microbalance Gas Sensor for Discriminating Amine and Formaldehyde

UiO-66/Multiwalled Carbon Nanotube Nanocomposite-Coated Quartz Crystal Microbalance Gas Sensor for Discriminating Amine and Formaldehyde

The Preparation of UiO‐66‐NH₂/CNT Electrocatalyst and its High Catalytic Performance for Electrochemical Synthetic Ammonia in Neutral Electrolyte

Ultrasound-assisted adsorption of organic dyes in real water samples using zirconium (IV)-based metal-organic frameworks UiO-66-NH2 as an adsorbent

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Heterogenized Phosphinic Acid on UiO-66-NH2: A Bifunctional Catalyst for the Synthesis of Polyhydroquinolines

Cited by 8 publications

References 68 publications

UiO-66/Multiwalled Carbon Nanotube Nanocomposite-Coated Quartz Crystal Microbalance Gas Sensor for Discriminating Amine and Formaldehyde

UiO-66/Multiwalled Carbon Nanotube Nanocomposite-Coated Quartz Crystal Microbalance Gas Sensor for Discriminating Amine and Formaldehyde

The Preparation of UiO‐66‐NH2/CNT Electrocatalyst and its High Catalytic Performance for Electrochemical Synthetic Ammonia in Neutral Electrolyte

Ultrasound-assisted adsorption of organic dyes in real water samples using zirconium (IV)-based metal-organic frameworks UiO-66-NH2 as an adsorbent

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The Preparation of UiO‐66‐NH₂/CNT Electrocatalyst and its High Catalytic Performance for Electrochemical Synthetic Ammonia in Neutral Electrolyte