Overview
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Key numbers
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- 3 State Key Laboratory of Metastable Materials Science and Technology, Key Laboratory of Microstructural
- chemicals, as listed in Table 1.
- Table 1. ECs, their classification, and exempli gratia.
- Fe (II), enhancing redox cycling (26). Structurally, pyrite adopts a NaCl-like arrangement,
- with up to 250 mg/L SO4 2− remains safe for use. With its distinctive crystalline traits
- pairs (S2 2− ), which exhibit a robust lattice arrangement that imparts its metallic luster and
- pH stability range (3–9), making them effective in near-neutral conditions. In PAA-based
- making it a versatile catalyst various environmental applications (Table 2) (44).
- Table 2. Overview and contrast of homogeneous and pyrite derived heterogeneous Fenton flow.
- becomes more stable in alkaline conditions (t1/2 of 10–100 s) than neutral (t1/2 of 1–10 ms)
- electron transfer, making radical formation more efficient (Table 3) (54).
- Efficiency chemicals. Achieves up to 85–90% removal under optimized conditions.
- (3) Fe2+ is regenerated through Fe3+ reacting with O2 ·− (Equations (18)–(20)) (Table 4). This
- drothermal, and hot-injection methods, have been explored for their synthesis (Table 5) (62).
- Table 5. Typical synthesis methods for 0D FeS2 materials.
- metals from contaminated water, achieving adsorption rates of 92% for Pb2+ and 89% for
- tial for the breakdown of persistent organic pollutants. As a result, up to 98% of organic
- cated that the 0D pyrite/PMS system significantly decreased the nephrotoxicity (90%) and
- hepatotoxicity (85%) effects of tetracycline. Notably, no significant decline in catalytically
- like nanorods and nanowires (Table 6). The solvothermal approach is particularly effective
- in FeS2 . When suitable templates or growth-directing chemicals are used, this approach can
- Table 6. Synthesis methods of 1D pyrite material.
- an acidic to neutral pH range is ideal for creating well-defined FeS2 nanostructures with
- 0D counterparts, achieving a 90% degradation efficiency of pharmaceutical contaminants
- Using high-purity Fe foil (99.99%) and sulfur powder dissolved in deionized water, FeS2
- 95% in 60 min, surpassing lower-dimensional pyrite, because of their high density of active
- sites and enhanced electron mobility (15). Two-dimensional structures are more stable and
- of 99% of industrial emissions’ volatile organic compounds (VOCs), dramatically outper-
- degradation (93.4%) and mineralization (82.3%) efficiencies. The enhanced performance
- discovered that 3D foam-like pyrite structures effectively activate H2 O2 , resulting in a 120%
- Table 7. Typical applications of pyrite-based catalysts for pollutant removal.
- Removed 85% of ammonia Pyrite nanoparticles facilitated
- Achieved 90% removal of Nanorods exhibited enhanced
- Gas-phase removal of Removed 95% of H2 S from
- Removal of Adsorbed 90% of 2D Pyrite nanosheets provided
- Photothermal Achieved 92% degradation
- 3D Pyrite (hierarchical Decomposed 97% of cyanide
- techniques based on sulfate radicals can remove 90% of bisphenol A and that gas-phase
- lutant interactions. Thin films can achieve 92% degradation of pharmaceutical pollutants
- mining effluents with a 97% success rate. However, these structures often require complex
- highly efficient catalysts for a range of catalysis and environmental applications (Table 8).
- Table 8. Applications of hybrid pyrite-based materials.
Methods (brief)
- drinking water treatment plants based on Fourier transform-ion cyclotron resonance mass spectrometry. Sep. Purif. Technol. 2025,
- samples: A critical review. Miner. Eng. 2024, 218, 108975. (CrossRef)
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