Hollow Co3S4 polyhedron decorated with interlayer-expanded MoS2 nanosheets for efficient tetracycline removal from aqueous solution

Li, Songrong; Chen, Xi; Li, Mingjie; Cheng, Xue; Long, Yuhan; Liu, Wenhao; Cao, Zhenhua; Tong, Xiaoqin; Huang, Wenli; Liu, Dongfang

doi:10.1016/j.cej.2022.136006

Cited by 28 publications

(6 citation statements)

References 55 publications

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“…The adsorption capacity of TC on SD-MoS 2 , which seemed to be relatively high, reached equilibrium in a very short time. Table summarizes the adsorption capacities of the adsorbents used for TC, with SD-MoS 2 exhibiting the best practical potential among these absorbents. ,,− The enhanced adsorption capacity is attributed to the introduction of sulfur defects in MoS 2 , which induced more exposed unsaturated sulfur atoms at the edge and improved the interaction of SD-MoS 2 with TC.…”

Section: Resultsmentioning

confidence: 99%

“…17−19 20 and Sun et al prepared MP@MoS 2 , 21 both of which are composites with good adsorption properties for heavy metal ions (Pb 2+ , Cr 6+ , and Hg 2+ ). 22 The preparation of composites such as Co 3 S 4 −MoS 2 23 and MoS 2 @Z 24 improves the hydrophobic agglomeration properties of MoS 2 and enabled it to exhibit excellent TC adsorption properties. MoS 2 has a typical "sandwich" structure of S−Mo−S, allowing it to be adsorbed not only on a single layer but also between layers.…”

Section: ■ Introductionmentioning

confidence: 99%

“…In recent years, two-dimensional transition metal dichalcogenides represented by MoS 2 have broad application prospects in the field of environmental protection, which have piqued the interest of researchers and have become a hot spot in the field of functional materials in recent years. − Wang et al prepared MoS 2 /Fe 3 O 4 and Sun et al prepared MP@MoS 2 , both of which are composites with good adsorption properties for heavy metal ions (Pb 2+ , Cr 6+ , and Hg 2+ ) . The preparation of composites such as Co 3 S 4 –MoS 2 and MoS 2 @Z improves the hydrophobic agglomeration properties of MoS 2 and enabled it to exhibit excellent TC adsorption properties. MoS 2 has a typical “sandwich” structure of S–Mo–S, allowing it to be adsorbed not only on a single layer but also between layers .…”

Section: Introductionmentioning

confidence: 99%

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Enhanced Tetracycline Adsorption of MoS₂ via Defect Introduction Under Microwave Irradiation

Xie

Gang

et al. 2022

Langmuir

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Defect engineering is a promising method for improving the performance of MoS2 in various fields. In this study, sulfur-defect-enriched MoS2 (SD-MoS2) nanosheets were fabricated via a facile microwave-hydrothermal strategy in 10 min for tetracycline (TC) adsorption applications. The introduction of sulfur defects in MoS2 induced more exposed unsaturated sulfur atoms at the edge, enhancing the interaction between the adsorbent and antibiotic and improving the adsorption activity of the antibiotic. Density functional theory calculations further revealed that sulfur defects in MoS2 could alter the electronic structure and exhibited low TC adsorption energy of −2.09 eV. This work provides a new method for fabricating MoS2 nanosheets and other transition metal dichalcogenide-based adsorbents with enhanced antibiotic removal performance and a comprehensive understanding of antibiotic removal mechanisms in SD-MoS2.

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Section: Resultsmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Enhanced Tetracycline Adsorption of MoS₂ via Defect Introduction Under Microwave Irradiation

Xie

Gang

et al. 2022

Langmuir

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“…The high correlation coefficient for the DMBs (R 2 > 0.998) was indicative that the adsorption kinetic was in accordance with the pseudo-second-order model, confirming that the ratelimiting mechanism for Hg(II) adsorption on the DMBs was chemisorption. 39 As the adsorbent dosage was increased to 0.5 g L −1 , the DMBs showed a faster Hg(II) adsorption rate, with over 80% of the Hg(II) removed within 30 min and the final residual Hg(II) concentration below 0.02 mg L −1 (Figure S21a). In addition, the adsorption performance of Hg(II) by DMBs was improved at a lower concentration (0.5 mg L −1 ) of the Hg(II) solution (Figure S21b).…”

Section: Batch Adsorption Removal Of Hg(ii) 321 Adsorption Kineticsmentioning

confidence: 99%

Preparation of Macroporous Double-Network MoS₂-Based Beads for Efficient and Selective Removal of Hg(II) from Water

Li,

Yang,

Zhang

et al. 2024

ACS EST Eng.

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Molybdenum disulfide (MoS 2 ) nanosheets have exhibited remarkable performance in mercury (Hg(II)) immobilization from complex aqueous environments, whereas the issues of aggregation and separation inhibit their application in real-world scenarios. Herein, a facile and general structuring method via polymer cross-linking was presented to construct recyclable double-network MoS 2 -based beads (DMBs) for efficient and selective Hg(II) removal from various water matrices. The porous structure and strong hydrogen-bonding interactions between the polymer and MoS 2 enhanced the reactivity and stability of DMBs for Hg(II) capture. The as-synthesized DMBs exhibited high Hg(II) adsorption capacity (253.6 mg g −1 at 25 °C), rapid kinetics, wide working pH range (2−9), great Hg(II) selectivity (K d = 8.53 × 10 6 mL g −1 ), and anti-interfering ability. The mechanism of Hg(II) capture by DMBs, mainly the surface coordination (Hg−S) and formation of Hg(II) complexes (-S-HgOHgCl, -S-HgCl, and -S-HgOHgOH), was proposed in combination with characterizations and theoretical calculations. Moreover, the continuous-flow adsorption performance (∼14.5 L of Hg(II)-containing wastewater per gram of adsorbent treated) and reusability (>90% of Hg(II) removal efficiency after 12 cycles) of the DMBs validated their practical applicability. Overall, this study suggests a promising approach for engineering advanced nanomaterials to facilitate their implementations in water purification facilities.

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“…TC may re-enter the food chain through water resources, thus threatening animal and human health ( Zhao et al, 2021 ). In addition, TC pollution can cause the local production of antibiotic resistance genes, destroy the aquatic microbial community, and harm the local ecological environment ( Li et al, 2022 ). Therefore, efficient and reliable TC removal technology is in urgent need of development.…”

Section: Introductionmentioning

confidence: 99%

Efficient removal of tetracycline from aqueous solution by K2CO3 activated penicillin fermentation residue biochar

et al. 2022

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In this study, biochar was prepared using penicillin fermentation residue (PR) as the raw material by different methods. The adsorption behavior and adsorption mechanism of biochar on tetracycline (TC) in an aqueous environment were investigated. The results showed that K2CO3 as an activator could effectively make porous structures, and that biochar with mesoporous or microporous could be prepared in a controlled manner with two kinds of different activation methods, the dry mixing method and the impregnation method. The dry mixing method could create more mesopores, while the impregnation method could prepare more micropores. Microporous biochar (IKBCH) with a high specific surface area could be prepared by the impregnation method combined with HCl soaking, which has an excellent adsorption effect on tetracycline. When the concentration of tetracycline was 200 mg/L, the removal rate of 99.91% could be achieved with the dosage of microporous biochar at 1 g/L. The adsorption process was in accordance with the Langmuir model and the pseudo-second-order model, respectively. The maximum adsorption capacity of IKBCH was 268.55 mg/g (25°C). The adsorption mechanisms were pore filling, π-π interaction, electrostatic adsorption, and hydrogen bond. Its stable and wide applicability adsorption process does not cause ecological pollution in the aqueous environment, and it is a promising biochar adsorbent.

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Hollow Co3S4 polyhedron decorated with interlayer-expanded MoS2 nanosheets for efficient tetracycline removal from aqueous solution

Cited by 28 publications

References 55 publications

Enhanced Tetracycline Adsorption of MoS₂ via Defect Introduction Under Microwave Irradiation

Enhanced Tetracycline Adsorption of MoS₂ via Defect Introduction Under Microwave Irradiation

Preparation of Macroporous Double-Network MoS₂-Based Beads for Efficient and Selective Removal of Hg(II) from Water

Efficient removal of tetracycline from aqueous solution by K2CO3 activated penicillin fermentation residue biochar

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Hollow Co3S4 polyhedron decorated with interlayer-expanded MoS2 nanosheets for efficient tetracycline removal from aqueous solution

Cited by 28 publications

References 55 publications

Enhanced Tetracycline Adsorption of MoS2 via Defect Introduction Under Microwave Irradiation

Enhanced Tetracycline Adsorption of MoS2 via Defect Introduction Under Microwave Irradiation

Preparation of Macroporous Double-Network MoS2-Based Beads for Efficient and Selective Removal of Hg(II) from Water

Efficient removal of tetracycline from aqueous solution by K2CO3 activated penicillin fermentation residue biochar

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Product

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Enhanced Tetracycline Adsorption of MoS₂ via Defect Introduction Under Microwave Irradiation

Enhanced Tetracycline Adsorption of MoS₂ via Defect Introduction Under Microwave Irradiation

Preparation of Macroporous Double-Network MoS₂-Based Beads for Efficient and Selective Removal of Hg(II) from Water