Visible-light-driven zeolite imidazolate frameworks-8@ZnO composite for heavy metal treatment

Wang, Xuewen; Cao, Zuqiang; Du, Biao; Zhang, Yang; Zhang, Rongbin

doi:10.1016/j.compositesb.2019.107685

Cited by 55 publications

(10 citation statements)

References 48 publications

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“…At the same time, the XPS spectra of N 1s show three peaks at 398.9, 399.6, and 401.0 eV, as shown in Figure E. These peaks were attributed to the pyridinic N, N-metal bonds, and pyrrolic N. − These results further confirm that ZIF-8 has been successfully generated on ZnIn-LDOs.…”

Section: Resultssupporting

confidence: 56%

One-pot In Situ Microwave Hydrothermally Grown Zeolitic Imidazolate Framework-8 on ZnIn-Layered Double Oxides toward Enhanced Methylene Blue Photodegradation

Liu

Shao

Wang

et al. 2020

Ind. Eng. Chem. Res.

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Zeolitic imidazolate framework-8 (ZIF-8)/semiconductor nanocomposites were synthesized by a simple method. The nanocomposites were composed of the in situ grown ZIF-8 and supported ZnIn-layered double oxides (ZnIn-LDOs), in which ZnIn-LDOs were used as a Zn 2+ source to form ZIF-8. The ZnIn-LDOs were formed by calcining the microhydrothermally synthesized ZnIn-layered double hydroxide precursor. The effect of the ZIF-8 amount on the morphology and photocatalytic activity of nanocomposites was studied. The nanocomposites were composed of the aggregation of ZIF-8 in the shape of a dodecahedron and ZnIn-LDOs in the shape of a flower. The ZI-1-ZIF-8 exhibited excellent photodegradation activity, in which the degradation rate of methylene blue (MB) was 97% under 120 min simulated sunlight irradiation. Moreover, the photocatalytic degradation activity could still be maintained at 95% after five runs. The trapping experiment indicated that the reactive radicals of • OH play an important role in MB removal. Similarly, the experimental results showed that ZIF-8/ZnIn-LDOs could degrade ciprofloxacin under the simulated sunlight irradiation. Therefore, ZIF-8/ZnIn-LDOs nanocomposites have an important application prospect in photocatalytic degradation of pollutants.

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Section: Resultssupporting

confidence: 56%

One-pot In Situ Microwave Hydrothermally Grown Zeolitic Imidazolate Framework-8 on ZnIn-Layered Double Oxides toward Enhanced Methylene Blue Photodegradation

Liu

Shao

Wang

et al. 2020

Ind. Eng. Chem. Res.

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“…While the peak at 532.4 eV corresponds to the chemisorbed oxygen and/or hydroxyls in the oxygen-deficient regions within the ZnO matrix. The peaks of C 1s at 285.9 and 284.6 eV (Figure D) are indexed to 2-methylimidazole and adventitious hydrocarbon, respectively . The high-resolution N 1s spectrum in Figure E can be delivered to three components.…”

Section: Resultsmentioning

confidence: 99%

“…The peaks of C 1s at 285.9 and 284.6 eV (Figure 3D) are indexed to 2-methylimidazole and adventitious hydrocarbon, respectively. 51 The high-resolution N 1s spectrum in Figure 3E can be delivered to three components. The peak at 402.2 eV is derived from the charged nitrogen N + , which originated from PDDA.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“Dual Signal-On” Split-Type Aptasensor for TNF-α: Integrating MQDs/ZIF-8@ZnO NR Arrays with MB-Liposome-Mediated Signal Amplification

et al. 2021

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Ultrasensitive and accurate detection of biomarkers in serum is of great importance for disease diagnosis and treatment. So far, the commonly used single-mode signal suffers from certain instinct drawbacks that restrict assay performances. Herein, we report the proof-of-concept fabrication of a split-type photoelectrochemical (PEC) and electrochemical (EC) dual-modal aptasensor for ultrasensitively tracing tumor necrosis factor-α, a noteworthy biological biomarker with essential clinical importance. By smart integrating molybdenum disulfide QDs/zeolitic imidazolate framework-8@ZnO nanorod arrays with a methylene blue-liposome-mediated signal amplification strategy, “dual signal-on” detection is accomplished based on a sandwich reaction of the target with aptamer-anchored carboxyl magnetic beads and an aptamer-confined MB liposome. Linear ranges of 5 fg/mL–5 μg/mL (detection limit 1.46 fg/mL) for PEC and 10 fg/mL–0.5 μg/mL (detection limit 6.14 fg/mL) for EC are obtained, respectively. An independent signal transduction mechanism supports the accuracy improvement, and a separate biological process from a translator enables convenient fabrication, short-time consumption, wider linearity, as well as outstanding reproducibility and stability in practical application. This work presents a universal bioassay route with prospects in biomedical and related areas.

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“…As shown in Figure 2 b, the peak at 532.1 eV of C–CF was associated with physically adsorbed O 2 on the surface of the fiber; meanwhile, the O 1s spectra of GL–CF could be divided into three peaks at 531.3 eV, 531.7 eV, and 532.9 eV, which attributed to the O–H, O=C, and C–O corresponding to the C 1s. The peaks of Zn–CF at 530.8 eV, 531.8 eV, and 532.8 eV were assigned to the Zn–O bonds [ 41 ], Oxygen ions in the ZnO [ 42 ], and O–H, respectively. For ZI–CF, the characteristic peaks of O 1s were located at 531.6 and 533.1 eV, which were attributed to the O in the forms of Zn–OH, respectively [ 35 ].…”

Section: Resultsmentioning

confidence: 99%

“…The N element was exhibited in the ZI–CF and ZZ–CF, assigned to the involvement of dimethylimidazole. In the N 1s spectrum ( Figure 2 c), the peaks located at 398.2 eV and 399.5 eV were assigned to the C–N and Zn–N bonds of ZI–CF and ZZ–CF [ 42 , 44 ]. Owing to the binding energy of O–Zn–N, the shift of the N 1s peak position was obvious.…”

Section: Resultsmentioning

confidence: 99%

Metal–Organic Frameworks Meet Metallic Oxide on Carbon Fiber: Synergistic Effect for Enhanced Photodegradation of Antibiotic Pollutant

Zhu

Zhou

Zhang

et al. 2022

IJMS

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Photodegradation shows a potential strategy for alleviating the excessive antibiotics crisis. The synergistic effect of various metal compounds immobilized on conductive substrates has been considered for wastewater treatment. However, developing a facile and universal approach for rational design and enhancing photocatalytic properties has endured extreme challenges. Herein, we develop a strategy to facilitate the photocatalytic reactions by designing a composite architecture of ZIF–8 ligand binding to the in–situ synthesis ZnO seed layer on carbon fiber. In this architecture, the dissolution and release of the seed layer in the excessive 2–Methylimidazole methanol solution were used as the binder to enhance the interplay between organic ligand and substrate. As an evaluated system for antibiotic contaminants, the photodegradation of tetracycline hydrochloride was performed with a removal efficiency of 88.47% (TC = 50 mg/L, pH = 4, 0.08 g of photocatalyst, illumination within 100 min). Moreover, the photocatalyst exhibited a steady photocatalytic activity (75.0%) after five cycles. The present work demonstrated a strategy for enhancing the photocatalytic performances of carbon fiber and accordingly provided useful perception into the design of the synergistic structure.

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Visible-light-driven zeolite imidazolate frameworks-8@ZnO composite for heavy metal treatment

Cited by 55 publications

References 48 publications

One-pot In Situ Microwave Hydrothermally Grown Zeolitic Imidazolate Framework-8 on ZnIn-Layered Double Oxides toward Enhanced Methylene Blue Photodegradation

One-pot In Situ Microwave Hydrothermally Grown Zeolitic Imidazolate Framework-8 on ZnIn-Layered Double Oxides toward Enhanced Methylene Blue Photodegradation

“Dual Signal-On” Split-Type Aptasensor for TNF-α: Integrating MQDs/ZIF-8@ZnO NR Arrays with MB-Liposome-Mediated Signal Amplification

Metal–Organic Frameworks Meet Metallic Oxide on Carbon Fiber: Synergistic Effect for Enhanced Photodegradation of Antibiotic Pollutant

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