WATER RESEARCH
·
2025
·
IF 12.4
Qiya Sun,Dunjie Li,Yunpeng He,Qian Ping,Lin Wang,Yongmei Li
This study developed a novel strategy combining a nanoscale zero-valent iron (nZVI)/peracetic acid (PAA) pretreatment and hydrochar regulation to enhance anaerobic digestion of waste activated sludge (WAS) under ammonia-stressed conditions. The strategy significantly enhanced methane production at ammonia concentrations below 3000 mg/L, with the regulation groups (AN3000/REG) achieving a 50.1 % increase in cumulative methane yield. Metagenomic analysis demonstrated a 14.2 % enrichment of key functional microorganisms, including syntrophic fatty acid-oxidizing bacteria and hydrogenotrophic methanogens, in the AN3000/REG groups. Some of them promote the conversion of butyrate and valerate to acetate through the upregulation of key genes in the fatty acid β-oxidation pathway, thereby supplying sufficient substrates for acetoclastic methanogenesis. Beyond enhancing acetoclastic methanogenesis, the AN3000/REG groups exhibited significant upregulation of other metabolic pathways, with a 34.2 % increase in syntrophic acetate oxidation-hydrogenotrophic methanogenesis genes and a 17.1 % increase in methanol/methylotrophic methanogenesis-related genes. These findings were further validated by the metatranscriptomic and metaproteomic combination analyses. Furthermore, the AN3000/REG groups exhibited a significant enhancement in direct interspecies electron transfer, with functional microbes (e.g., Geobacter, Methanosarcina , and Methanobacterium ), pili, and cytochrome c showing significant increases of 1.38-fold, 12.7-fold, and 5.6-fold, respectively. This might be due to the synergistic effects of nZVI and hydrochar in the regulation groups. Additionally, metabolomic analyses revealed that the regulation strategy improved the microbial adaptability to ammonia stress by modulating metabolic products, such as alkaloids. Our study not only provides a promising strategy for alleviating ammonia inhibition during the anaerobic digestion of WAS but also provides a strong basis for understanding the underlying mechanism under ammonia-stressed conditions.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Kaijia Wang,Ziwu Liu,Shiheng Mu,Huanqiang Shi,Mengmeng Zhou,Chao Yuan,Shijian Lu,Zhonghai Ni,Guoliang Tian
As a remarkable alternative anode to commercial graphite for the next-generation high-performance lithium-ion batteries (LIBs), silicon (Si) has attracted tremendous attention due to its high specific capacity. However, the enormous volume expansions/contractions during the charge/discharge limited its practical application in LIBs greatly. To solve these issues, herein, we fabricated a low-cost FeSi intermetallic compound (FeSi 2 ) by the ball milling with photovoltaic industrial waste micron-sized Si and Fe powders as raw materials and encapsulated it by N, S, O-doped mesoporous carbon with polyvinylpyrrolidone as C, N, O precursor and (NH 4 ) 2 SO 4 as template and pore-introducing agent. Owing to the presence of FeSi 2 , abundant meso-pores for mitigating Si and FeSi 2 expansion and the N, S, O-doped mesoporous carbon for facilitating lithium-ion transport and electron conduction, one as-prepared FeSi 2 /N, S, O-doped mesoporous carbon composite anode (FeSiA 1 @C) showed a high specific capacity of 401.7 mAh g −1 even at 1.0 A g −1 after 1600 cycles. More impressively, the assembled LiFePO 4 || 20 % FeSiA 1 @C/80 % commercial graphite full cell presented a high energy density of ca. 312.0 Wh kg −1 and a capacity retention of ca. 80 % after 500 cycles, demonstrating a promising practical applicability of FeSiA 1 @C anode, and showing a new way for the high-value utilization of industrial waste micron-sized Si for LIBs.
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Small
·
2024
·Vol. 20
·期 52
·2407715
·
IF 13
Chang Li,Xinyu Guo,Wenjun Deng,Na Shen,Yi Zhou,Yan Chen,Rui Li
Aqueous iron-ion batteries with reversible storage of Fe 2+ have undergone rapid development in recent years. Consistently throughout these studies, metallic iron is selected as the anode material. However, the large overpotential (250 mV) associated with the plating/stripping process of iron in aqueous solutions leads to unsatisfactory energy efficiency of the battery, although high capacity and Coulomb efficiency can be achieved. Herein, an iron-free anode material, 9,10-anthraquinone (AQ) is proposed in aqueous iron-ion batteries, which shows a low reaction potential and minimal polarization during storing iron ions. The organic anode exhibits favorable specific capacity of 106 mAh g −1 at 0.5 A g −1 and excellent cycling stability (92.6% retention after 500 cycles). In addition, an aqueous full iron-ion battery is constructed using AQ as the anode and 9,10-phenanthraquinone (PQ) as the cathode. The full battery demonstrates an enhanced energy efficiency of 72%, which is 206% higher than that of metal iron anode, and shows excellent cycling stability and Coulombic efficiency. This work provides a viable route to overcome the high polarization of metallic iron anode and promote the development of aqueous iron-ion batteries.
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Matter
·
2025
·
IF 17.5
Li Yang,Hao Wu,Fei Guo,Gaojie Zhang,Wenfeng Zhang,Haixin Chang
Electrical control of the anomalous Hall effect (AHE) provides an important gateway to reveal and regulate topological properties of spins. However, direct, immediate electrical tuning of the AHE in materials has been elusive, unfeasible, and rarely reported. Here, we demonstrate direct, immediate, nonlinear, electric current regulation of the AHE in a single, novel, van der Waals, room-temperature, ferromagnetic, ultrathin, two-dimensional (2D) crystal for intrinsic sensitivity of nodal electronic structures induced by 2D spin-orbit coupling (SOC) in a 2D quantum limit with an ultrasmall current (∼10 2 A cm −2 ). The multivalued electrical tuning of anomalous Hall resistance (R AHE ) ( R A H E 1 R A H E 2 ∗ 100 % ) is up to 584% and remains 126% at room temperature. The squared correlation between R AHE and longitudinal resistance indicates an SOC-dominated Berry curvature-induced AHE. This immediate-current AHE with distinct dependence on the dimension, crystal layer, and electronic topology provides unique quantum platforms for probing the essence of the dimension and for low-power spintronics and brain-like quantum devices.
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MOLECULES
·
2024
·Vol. 29
·期 12
·2868
·
IF 4.2
Tingjin Xu,Lu Fan,Zhaokun Xiong,Bo Lai
Fe/Cu bimetallic catalysts have a synergistic effect that can effectively enhance catalytic activity, so Fe/Cu bimetallic catalysts have been extensively studied. However, the efficacy and mechanisms of Fe/Cu bimetallic catalysts’ peroxidation activation have rarely been explored. In this study, Fe/Cu bimetallic materials were fabricated to catalyze different oxidizing agents, including peroxymonosulfate (PMS), peroxydisulfate (PDS), peroxyacetic acid (PAA), and hydrogen peroxide (H2O2), for the degradation of sulfamethoxazole (SMX). The Fe/Cu/oxidant systems exhibited an excellent degradation efficiency of sulfamethoxazole (SMX). In the Fe/Cu/PMS, Fe/Cu/PDS, and Fe/Cu/PAA systems, the main reactive oxygen species (ROS) responsible for SMX degradation were hydroxyl radical (•OH) and singlet oxygen (1O2), while the main ROS was only•OH in the H2O2system. The differences in the surface structure of the materials before and after oxidation were examined, revealing the presence of a large amount of flocculent material on the surface of the oxidized PMS material. Anion experiments and actual body experiments also revealed that the PMS system had a strong anti-interference ability. Finally, a comprehensive comparison concluded that the PMS system was the optimal system among the four oxidation systems. Overall, this work revealed that the PMS oxidant has a better catalytic degradation of SMX compared to other oxidizers for Fe/Cu, that PMS generates more ROS, and that the PMS system has a stronger resistance to interference.
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Materials Today Physics
·
2024
·
IF 10
Yuping Duan,Meiqi Li,Yuan Guo,Ning Zhu,Huifang Pang,Chenxu Dou
High-entropy alloys, as a novel type of absorber, exhibit exceptional electromagnetic modulation capabilities and significant potential for electromagnetic wave absorption. In this work, the FeCoNiCrMn high-entropy alloy absorbent prepared through a mechanical alloying process demonstrates a dual-phase solid solution structure comprising face-centered cubic (FCC) and body-centered cubic (BCC) phases. By varying the manganese (Mn) content in the system, it is possible to enhance the degree of crystallinity, maintain the integrity of the crystal structure, and effectively control the relative proportion of the BCC phase within the overall phase composition. This adjustment improves the brittleness of the sheet-like particles, reduces particle size, and significantly lowers the permittivity. When the molar ratio of Mn is 0.6, the sample exhibits improved impedance matching due to the optimal permittivity and permeability. Notably, the impedance matching and attenuation constant can also be balanced. At 6.42 GHz, the FeCoNiCr 0.4 Mn 0.6 alloy powder achieves the maximum reflection loss of −48.49 dB at a matching layer thickness of 3 mm. When the matching thickness is reduced to 2 mm, it can effectively cover a frequency range of 8.7–14.1 GHz (effective absorption bandwidth of 5.4 GHz), along with a wide absorption bandwidth and high absorption efficiency.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Shouzheng Jiao,Peng Cheng,Qian Li,Xiaonan Wang,Yufen Li,Zhongjun Cheng,Hua Lai,Yuyan Liu
Hypothesis Perfluorocarbon is commonly used as a coolant, chemical reaction carrier solvent, medical anti-hypoxic agents and blood substitutes. The realization of non-contact complex manipulation of perfluorocarbon liquids is urgently needed in human life and industrial production. However, most liquid-repellent interfaces are ineffective for the transport of ultra-low surface tension perfluorocarbon liquids, and struggle to maintain good durability due to unstable air or oil cushions in the surface. Therefore, preparing surfaces for stable non-contact complex manipulation of ultra-low surface tension droplets remains a challenge. Experiments In this paper, a novel solution, a photothermal responsive droplet manipulation surface based on polydimethylsiloxane brushes, has been reported. On this surface, droplets with different surface tensions (as low as 10 mN/m) can be efficiently manipulated through induced near-infrared light. Notably, this surface maintains its effectiveness after exposure to extreme anthropogenic conditions. Findings The interface effect between perfluorocarbon droplets and polydimethylsiloxane brushes by near-infrared light-induced was investigated in detail. In addition, ultra-low surface tension droplets demonstrate the ability to transport solid particles. The conductive droplets exhibit sophisticated manipulation realizing the controlled switching of smart circuits. This research opens up new possibilities for advancing the capabilities and adaptability of ultralow surface tension droplets in a range of applications.
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FUEL
·
2024
·
IF 6.7
Ruonan Wang,Naif Abdullah Al-Dhabi,Yufeng Jiang,Xiaofeng Dai,Rui Li,Wangwang Tang,Rongbo Guo,Shanfei Fu
Food waste (FW) is prone to accumulate volatile fatty acids (VFAs) during anaerobic digestion (AD). In this study, nano zero-valent iron (nZVI) was used to enhance AD system stability and improve methane production efficiency. Results showed that nZVI facilitated the AD obviously. The highest cumulative methane production of 195.63 ± 5.38 mL/g VS was obtained at the nZVI dosage of 1.0 g/L, which was 22.6 % higher than that of the control. The appropriate addition of nZVI mainly strengthened the methanogenic stage of AD of FW, reduced the accumulation of VFAs and alleviated the pH fluctuation of the system. The corrosion hydrogen production efficiency of nZVI during AD first increased and then decreased with the increase of nZVI addition. Microbial community analysis demonstrated that the addition of nZVI mainly increased the abundance of hydrotropic methanogens and DIET-associated methanogens, and promoted the growth of bacteria in a symbiotic relationship with methanogens. In summary, the nZVI addition supplied a promising approach to improve the methane production efficiency from AD of FW.
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JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2024
·
IF 8
Zhineng Wu,Hanyu Niu,Jiao Wang,Runnan Guo,Zixuan Yang,Gaolei Liang,Xiaodong Ma
Trichloroethylene (TCE) is a prevalent organic pollutant found in soil. The oxide passivation layer on the surface of micron iron powder inhibits the release of its reducing components, leading to ineffective reduction and purification of TCE in soil. To enhance TCE degradation, a slow-release reduction material " Escherichia sp. F1-micron iron powder" was developed. A novel iron-reducing bacterium, Escherichia sp. F1, was isolated from soil contaminated with chlorinated hydrocarbons. This bacterium demonstrated a sustained iron reduction capability, achieving a reduction rate of 38.7% for Fe(Ⅲ) within 15 days. Genome sequencing revealed that strain F1 harbors 53 functional iron reduction genes and 2 dehalogenation genes. Single-factor experiments identified the optimal conditions for TCE degradation in soil using the coupling material: glucose concentration at 40 mmol/kg, soil water content at 50%, and bacterial inoculum at 1% (v:w). Under these optimal conditions, the coupled material achieved 86.86% degradation of TCE in soil within 28 days. Further analysis using X-ray photoelectron spectroscopy of micron iron powder, soil Fe(Ⅱ) concentration, and soil physicochemical properties demonstrated that the addition of strain F1 to the soil could disrupt the passivation layer of iron oxide on the surface of micron iron powder, promoting the exposure of its reactive sites and internal reducing active components. This resulted in an in situ self-actuated activation of passivated micron iron powder, leading to an improved removal rate and complete dechlorination of TCE in the soil. Soil microbial high-throughput sequencing revealed that the addition of strain F1 regulated the soil bacterial community, significantly enriching of Escherichia-Shigella species associated with iron-reducing functions. This enrichment facilitated the degradation of TCE in the soil through coupling materials. The functional material plays a crucial role in achieving green treatment and risk control of sites contaminated with chlorinated organic pollutants.
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MACROMOLECULAR CHEMISTRY AND PHYSICS
·
2011
·Vol. 212
·期 22
·2487-2492
·
IF 2.437
Chang Su,Yinpeng Ye,Lihuan Xu,Cheng Zhang
A novel sulfide-containing aniline, 4-amino-dihydrobenzothiophene (ADBT), is synthesized by the alkylbromination of 1,2-dimethyl-3-nitrobenzene. Copolymers of aniline and ADBT, P(An-co-ADBT), are prepared by chemical oxidative polymerization and tested as a cathode material for Li-ion batteries. The results show that the copolymerization activity of ADBT is lower than that of aniline. The charge/discharge tests show that the P(An-co-ADBT)-2 gives well-defined and sloping plateaus in the potential rang of 3.0–4.0 V and quite a high capacity of 104.7 mAh g −1 . The P(An-co-ADBT)-2 also shows high cycling stability and coulombic efficiency. After 50 cycles, the discharge capacity of the P(An-co-ADBT)-2 still maintains 87.8% of the capacity obtained at the initial cycle.
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Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Guang-En Yuan,Yan-Ge Ma,Kangning Huangfu,Yunbei Li,Xin Zhang,Fenglin Yang
Advanced oxidation processes based on the combination of zero-valent iron (ZVI) and S(IV) have been extensively investigated for oxidative degradation of organic pollutants, but little attention has been paid to their reducing capacities in the presence of oxygen. This work found bisulfite (BS) could greatly enhance the degradation of p-nitrophenol (PNP) by ZVI under oxic conditions and PNP was only reduced to p-aminophenol without further degradation. A combination of indirect reduction by superoxide radical (O 2 •– ) and direct reduction by ZVI was verified as the mechanism of PNP degradation. Highly oxidizing species, such as hydroxyl radical (HO • ) and sulfate radical (SO 4 •− ), were also produced in the ZVI/BS system under oxic conditions but did not contribute to pollutant degradation perhaps due to the rapid consumption by reducing substances like BS ions and the released Fe 2+ . BS concentration, ZVI dosage, initial solution pH and coexisting anions (CO 3 2– , PO 4 3– and Cl – ) affected the degradation of PNP. ZVI lost the reactivity after used for three times because of the production of goethite and lepidocrocite covered on its surface. This study will provide a new insight into degradation of organic pollutants in ZVI/BS system under oxic conditions.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Kuang Wang,Zhanqiang Fang
In this work, a cost-effective ball-milling technique was employed to synthesize submicron oxalated zero-valent iron co-doped with graphite and nickel (G@Fe OX bm /Ni), aiming to enhance the removal efficiency of the recalcitrant pollutant 2, 2′, 4, 4′ – tetrabromodiphenyl ether (BDE-47) while minimizing secondary risks. The incorporation of graphite significantly improved the debromination efficiency of BDE-47, with a rate constant of 0.26 day −1 in a tetrahydrofuran/water system, which represents a 59.88 % increase over the oxalated zerovalent Fe/Ni without graphite (0.16 day −1 ). The determination of Ni leaching showed that no nickel ions were detected post-reaction over a broad pH range (3–11). Moreover, the reactivity of G@Fe OX bm /Ni was largely unaffected across the pH range (0.26–0.49 day −1 ), exhibiting excellent resistance to acidic and alkaline conditions. In both ultrapure water and real groundwater matrices, the degradation rate constants for BDE-47 increased to 2.98 day −1 and 0.79 day −1 , respectively, achieving debromination yields of 97.86 % and 50.18 % for the final product, diphenyl ether. Based on the established degradation pathway and electrochemical analysis, the debromination of BDE-47 follows a catalytic debromination and hydrogenation process by adsorbed atomic hydrogen (H* ADS ). The graphite doping enhanced the debromination of BDE-47 by increasing the production of H* ADS . The adsorption effect of graphite on metal ions effectively controlled secondary pollution and improved the material’s tolerance to acidic and alkaline environments. This work offers an efficient method for the degradation of low brominated diphenyl ether pollutants at a low cost and without secondary risks.
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