A ratiometric fluorescent hydrogel of controlled thickness prepared continuously using microtomy for the detection and removal of Hg(II)

Li, Meng; Li, Xiaoning; Xu, Mengwen; Liu, Bowen; Yang, Mengqing; Chen, Zhijun; Gao, Tianchu; James, Tony D.; Wang, Lidong; Xiao, Huining

doi:10.1016/j.cej.2021.131296

Cited by 39 publications

(15 citation statements)

References 56 publications

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“…Compared with the pristine MNPs/ ATT-AuNCs@ZIF-8, the Hg 4f spectrum of MNPs/ATT-AuNCs@ZIF-8-Hg 2+ contained two new peaks at 105.3 and 101.0 eV (Figure S14B), corresponding to Hg 4f 5/2 and Hg 4f 7/2 , respectively; this confirmed the successful loading of Hg 2+ . 1 In the N1s spectrum of MNPs/ATT-AuNCs@ZIF-8-Hg 2+ , a new N−metal band at 399.9 eV appeared (Figure 5A), revealing the existence of surface complexation interactions between N and Hg 2+ . 54 Furthermore, the Au 4f 5/2 , Au 4f 7/2 , Zn 3p 1/2 , and Zn 3p 3/2 peaks (Figure 5B) all shifted to higher binding energy upon the adsorption of Hg 2+ , which was a result of metal−metal interactions.…”

Section: Analyticalmentioning

confidence: 99%

Highly Fluorescent Magnetic ATT-AuNCs@ZIF-8 for All-in-One Detection and Removal of Hg²⁺: An Ultrasensitive Probe to Evaluate Its Removal Efficiency

Niu

et al. 2023

Inorg. Chem.

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The development of multifunctional materials for the synchronous detection and removal of mercury ions (Hg2+) is in high demand. Although a few multifunctional materials as a fluorescent indicator and adsorbent have achieved this aim, the feedback of their removal efficiency still depends on other methods. Herein, magnetic Fe3O4 nanoparticles (MNPs) and 6-aza-2-thiothymine-protected gold nanoclusters (ATT-AuNCs) were rationally assembled into a zeolitic imidazolate framework 8 (ZIF-8) structure via a one-pot method. The coordination assembly of ATT-AuNCs and ZIF-8 not only strengthened the aurophilic interactions of adjacent ATT-AuNCs but also induced the restriction of intramolecular motion of ATT with a six-membered heterocyclic structure. As a consequence, the fluorescence (FL) quantum yield of MNPs/ATT-AuNCs@ZIF-8 was 12.5-fold higher than that of pristine ATT-AuNCs. Benefiting from the enhanced FL emission, MNPs/ATT-AuNCs@ZIF-8 showed improved sensitivity for Hg2+ detection and therefore could evaluate the removal efficiency via FL detection, without relying on another detection method. Additionally, the nanocomposite also displayed a satisfactory removal capability for Hg2+, including a short capture time (20 min), a high removal efficiency (>96.9%), and excellent reusability (10 cycles). This work provides an approach for customizing functional nanocomposites to concurrently detect and remove Hg2+ with superior performance, especially for high detection sensitivity.

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Section: Analyticalmentioning

confidence: 99%

Highly Fluorescent Magnetic ATT-AuNCs@ZIF-8 for All-in-One Detection and Removal of Hg²⁺: An Ultrasensitive Probe to Evaluate Its Removal Efficiency

Niu

et al. 2023

Inorg. Chem.

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“…With a low pH value, the relatively high H + in solution could compete with Hg 2+ for active sites, leading to a reduced adsorption capacity. 39 Thus, a pH of 5.0 was selected for subsequent experiments. Fig.…”

Section: Adsorption Properties For Hg(ii) Ionsmentioning

confidence: 99%

An upcycled wood sponge adsorbent for drinking water purification by solar steam generation

Shi

et al. 2022

Environ. Sci.: Nano

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“…Additionally, the typical peaks for O 1 s at 531.6 and 532.74 eV shifted to 531.91 and 533.10 eV after adsorption, indicating that oxygen-containing functional groups contribute to the adsorption of Hg 2+ ions (Figure S5c, Supporting Information). [18] FTIR spectra of AC-H before and after adsorption are provided in Figure S6 (Supporting Information). Slight changes of the C-N (1085 cm −1 ) and -NH (1541 cm −1 ) bands before and after Hg 2+ adsorption are observed, which indicates that the Hg 2+ was adsorbed by the AC-H successfully.…”

Section: Mercury Ion Adsorptionmentioning

confidence: 99%

Reducing Heat Conduction Enhances the Photothermal Efficiency of Upcycled Adsorbents

Liu

et al. 2022

Adv Funct Materials

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Solar steam generation is an efficient way to address global freshwater shortages. However, water evaporation suffers from either inefficient heat conduction or relies on expensive materials and complex equipment. Herein, a porous hydrogel (AC-H) with molecular meshes, micron channels, and internal gaps is fabricated and used for metal ion adsorption. AC-H exhibits excellent uptake ability and can attain the levels required by industrial water safety standards. Subsequently, the exhausted AC-H hydrogel is vulcanized in situ (AC-MS) and upcycled for solar steam generation resulting in ≈1.41 kg m −2 h −1 evaporation rate under one sun irradition, which reduces costs and converts the waste into a resource. Furthermore, a heat management strategy is developed where a cold surface of specific area is introduced between the AC-MSx and bulk water to adsorb the heat loss. When the cold area is increased, the energy in the bulk water can be extracted by the coldsurface. which enhances the water evaporation rate. Significantly, the theoretical simulations are in good agreement with the experimental results. Therefore, this research provides a novel strategy to upcycle exhausted materials for photothermal technologies and reduces the heat conduction during solar-to-thermal evaporation.

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A ratiometric fluorescent hydrogel of controlled thickness prepared continuously using microtomy for the detection and removal of Hg(II)

Cited by 39 publications

References 56 publications

Highly Fluorescent Magnetic ATT-AuNCs@ZIF-8 for All-in-One Detection and Removal of Hg²⁺: An Ultrasensitive Probe to Evaluate Its Removal Efficiency

Highly Fluorescent Magnetic ATT-AuNCs@ZIF-8 for All-in-One Detection and Removal of Hg²⁺: An Ultrasensitive Probe to Evaluate Its Removal Efficiency

An upcycled wood sponge adsorbent for drinking water purification by solar steam generation

Reducing Heat Conduction Enhances the Photothermal Efficiency of Upcycled Adsorbents

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A ratiometric fluorescent hydrogel of controlled thickness prepared continuously using microtomy for the detection and removal of Hg(II)

Cited by 39 publications

References 56 publications

Highly Fluorescent Magnetic ATT-AuNCs@ZIF-8 for All-in-One Detection and Removal of Hg2+: An Ultrasensitive Probe to Evaluate Its Removal Efficiency

Highly Fluorescent Magnetic ATT-AuNCs@ZIF-8 for All-in-One Detection and Removal of Hg2+: An Ultrasensitive Probe to Evaluate Its Removal Efficiency

An upcycled wood sponge adsorbent for drinking water purification by solar steam generation

Reducing Heat Conduction Enhances the Photothermal Efficiency of Upcycled Adsorbents

Contact Info

Product

Resources

About

Highly Fluorescent Magnetic ATT-AuNCs@ZIF-8 for All-in-One Detection and Removal of Hg²⁺: An Ultrasensitive Probe to Evaluate Its Removal Efficiency

Highly Fluorescent Magnetic ATT-AuNCs@ZIF-8 for All-in-One Detection and Removal of Hg²⁺: An Ultrasensitive Probe to Evaluate Its Removal Efficiency