Tetrabromobisphenol A transformation by biochar supported post-sulfidated nanoscale zero-valent iron: Mechanistic insights from shell control and solvent kinetic isotope effects

Gao, Fan; Zhang, Mingyi; Ahmad, Shakeel; Shi, Yinghao; Yang, Xinzuo; Tang, Jingchun

doi:10.1016/j.jhazmat.2023.132028

Cited by 12 publications

(1 citation statement)

References 66 publications

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“…To address these challenges faced by Si, various strategies have been investigated, including nanocrystallization, − pore structure engineering, − and composite design. − Among these, the rational construction of silicon–carbon composites stands out as one of the most effective approaches to enhance the electrochemical performance of Si anodes. Notably, the introduced carbon material serves a dual purpose: it acts as a protective layer to accommodate the substantial volume changes in Si, thereby preserving the integrity of the composite and electrode structure, while also serving as a conductive framework or carrier to enhance electronic conductivity. − However, maintaining the long-term stability of physically integrated silicon–carbon composites during deep cycling remains a challenge, and conventional carbon materials have shown limited improvement in rate performance. − Therefore, there is a pressing need for silicon–carbon composites with high conductivity and stable structures to reach high-performance levels.…”

Section: Introductionmentioning

confidence: 99%

Design of Supported–Coated Structure Silicon/Carbon Composites Using Industrial Waste Micrometer-Sized Silicon for an Advanced Lithium-Ion Battery Anode

Shi,

Wang,

Wang

et al. 2024

Energy Fuels

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Silicon (Si) has garnered significant attention as an anode material for an advanced lithium-ion battery (LIB), but it remains challenging to design high-stability Si-based composites with low structural strain and high electrical conductivity. Here, we present a novel Si−carbon anode material (Si/G@TNS-60) derived from recycled wire-cutting polysilicon waste, featuring a unique structure with an internal anchoring load and an external wrapping of flexible twodimensional (2D) material. The graphite (G) component serves as a conductive anchor carrier, enhancing electronic conductivity and preventing pulverization and electrical contact loss in Si particles. Additionally, the MXene (TNS) protective layer provides mechanical flexibility, isolates Si from direct contact with the electrolyte to reduce side reactions, improves ion and electron diffusion kinetics, and ensures structural stability. Consequently, the Si/G@TNS-60 electrode delivers improved initial coulombic efficiency (ICE, 78.8%), excellent rate performance with a capacity of 485.3 mAh g −1 at 2 C, and sustained durability over 500 cycles at 0.5 C with 83.5% capacity retention. The investigation into the reaction dynamics reveals the hybrid storage mechanism and rapid Li + diffusion coefficient. Furthermore, ex situ scanning electron microscopy (SEM) demonstrates a minimal volume change and maintains the integrity of the electrode structure. Impressively, the full cell based on the Si/G@TNS-60 anode prelithiated by chemical solution technology and LiNi 1/3 Co 1/3 Mn 1/3 O 2 as the cathode shows a raised ICE of 88.5% and maintains excellent cycle stability. This work fundamentally puts forward a facile and effective structural engineering strategy, highlighting the promising application potential of wire-cutting polysilicon waste in advanced LIB technology.

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Section: Introductionmentioning

confidence: 99%

Design of Supported–Coated Structure Silicon/Carbon Composites Using Industrial Waste Micrometer-Sized Silicon for an Advanced Lithium-Ion Battery Anode

Shi,

Wang,

Wang

et al. 2024

Energy Fuels

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Synergistic effect between biochar and sulfidized nano-sized zero-valent iron enhanced cadmium immobilization in a contaminated paddy soil

Zhou,

Lv,

et al. 2024

Biochar

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Biochar-based sulfidized nano-sized zero-valent iron (SNZVI/BC) can effectively immobilize cadmium (Cd) in contaminated paddy soils. However, the synergistic effects between biochar and SNZVI on Cd immobilization, as well as the underlying mechanisms remain unclear. Herein, a soil microcosm incubation experiment was performed to investigate the immobilization performance of SNZVI/BC towards Cd in the contaminated paddy soil. Results indicated that the addition of SNZVI/BC at a dosage of 3% significantly lessened the concentration of available Cd in the contaminated soil from 14.9 (without addition) to 9.9 mg kg−1 with an immobilization efficiency of 33.3%, indicating a synergistic effect. The sequential extraction results indicated that the proportion of the residual Cd in the contaminated soil increased from 8.1 to 10.3%, manifesting the transformation of the unstable Cd fractions to the steadier specie after application of SNZVI/BC. Also, the addition of SNZVI/BC increased soil pH, organic matter, and dissolved organic carbon, which significantly altered the bacterial community in the soil, enriching the relative abundances of functional microbes (e.g., Bacillus, Clostridium, and Desulfosporosinus). These functional microorganisms further facilitated the generation of ammonium, nitrate, and ferrous iron in the contaminated paddy soil, enhancing nutrients’ availability. The direct interaction between SNZVI/BC and Cd2+, the altered soil physicochemical properties, and the responded bacterial community played important roles in Cd immobilization in the contaminated soil. Overall, the biochar-based SNZVI is a promising candidate for the effective immobilization of Cd and the improvement of nutrients’ availability in the contaminated paddy soil. Graphical Abstract

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Zero-valent iron-based materials for enhanced reductive removal of contaminants: From the trial-and-error synthesis to rational design

Shi,

Guo,

Gao

et al. 2025

Applied Catalysis B: Environment and Energy

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Tetrabromobisphenol A transformation by biochar supported post-sulfidated nanoscale zero-valent iron: Mechanistic insights from shell control and solvent kinetic isotope effects

Cited by 12 publications

References 66 publications

Design of Supported–Coated Structure Silicon/Carbon Composites Using Industrial Waste Micrometer-Sized Silicon for an Advanced Lithium-Ion Battery Anode

Design of Supported–Coated Structure Silicon/Carbon Composites Using Industrial Waste Micrometer-Sized Silicon for an Advanced Lithium-Ion Battery Anode

Synergistic effect between biochar and sulfidized nano-sized zero-valent iron enhanced cadmium immobilization in a contaminated paddy soil

Zero-valent iron-based materials for enhanced reductive removal of contaminants: From the trial-and-error synthesis to rational design

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