JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
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IF 9.965
Ning Liu,Fuhao Fei,Wangxi Dai,Jianqiu Lei,Fukun Bi,Botao Wang,Guixiang Quan,Xiaodong Zhang,Liang Tang
Herein, a highly efficient Z-scheme SnS 2 /MIL-88B (Fe) (SnSFe) heterojunction was successfully synthesized to use both as photocatalysts and persulfate (PS) activator for ibuprofen (IBP) degradation. Flower-liked SnS 2 was uniformly loaded on MIL-88B (Fe), and SnSFe retained the original polyhedral morphology of MIL-88B (Fe). The highest removal of IBP was achieved in the presence of SnSFe with 0.5% SnS 2 (SnSFe0.5). Characteristic results and density functional theory calculations demonstrated that the enhanced degradation of IBP was due to the difference in Fermi energy levels of SnS 2 and MIL-88B (Fe) leading to electrons transferred from SnS 2 to MIL-88B (Fe), and Sn O bond was formed in SnSFe. , OH and O 2 − were the main active species in SnSFe0.5/PS/visible light system. Z-scheme heterojunction of SnSFe was constructed to propose the degradation mechanism. This research revealed that the synergism of photocatalysis and PS activation using SnS 2 /Fe-based MOFs composites possessed great potentials in wastewater remediation.
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高影响因子
ACS Sustainable Chemistry & Engineering
·
2021
·
IF 8.198
Yi Zhou,Wenbiao Zhang,Jialai Hu,Dan Li,Xing Yin,Qingsheng Gao
Unraveling structure-related reconstruction during oxygen evolution reaction (OER) and its correlation with intrinsic electrocatalytic activity is of great significance for designing better catalysts but unfortunately remains elusive. Herein, ultrathin Ni-Fe layered-double-hydroxides (LDH) with inherent oxygen vacancies (VO) are successfully fabricated via coprecipitation under a controlled manner, which accomplish a quite low overpotential of 230 mV at 10 mA cm–2 in 1.0 M KOH and perform among the best of recently reported nonprecious electrocatalysts. During the OER, inherent VO is experimentally and theoretically evidenced to boost surface reconstruction and the operando formation of p–n interfaces (i.e., γ-Ni-Fe LDH/α-Ni-Fe LDH) via deprotonation. On such reconstructed interfaces, the VO in both surface γ-Ni-Fe LDH and bulk α-Ni-Fe LDH can alter the electron densities of metal sites and subsequently optimize the free energies of a multistep OER pathway, which accounts for the boosted OER activity and, more importantly, identifies the correlation of electrocatalysis with both the catalyst surface and bulk.
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Nano Research
·
2024
·Vol. 17
·期 6
·4924-4933
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IF 9.5
Fan Yu,Yi Yu,Rong Hongpan,Zhang Jiatao
Carbon-based single-atom catalysts (SACs) have been widely studied in the field of biomedicine due to their excellent catalytic performance. However, carbon-based SACs usually aggregate during pyrolysis, which leads to the reduction of catalytic activity. Here, we describe a method to improve the monodispersion of SACs using silicon dioxide as a protective layer. The decoration of silicon dioxide serves as a buffer layer for individual nanoparticles, which is not destroyed during the pyrolysis process, ensuring the single-particle dispersion of the nanoparticles after etching. This approach increased the hydroxyl groups on the surface of Fe-SAC (Fe-SAC-SE) and improved its water solubility, resulting in a four times enhancement of the peroxidase (POD)-like activity of Fe-SAC-SE (58.4 U/mg) than that of non-protected SACs (13.9 U/mg). The SiO 2 -protection approach could also improve the catalytic activities of SACs with other metals such as Mn, Co, Ni, and Cu, indicating its generality for SACs preparation. Taking advantage of the high POD-like activity, photothermal properties, and large specific surface area of Fe-SAC-SE, we constructed a synergistic therapeutic system (Fe-SAC-SE@DOX@PEG) for combining the photothermal therapy, catalytic therapy, and chemotherapy. It was verified that the photothermal properties of Fe-SAC-SE@DOX@PEG could effectively improve its POD-like activity, exhibiting excellent tumor-killing performance at the cellular level. This work may provide a general approach to improve the performances of SACs for disease therapy and diagnosis.
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Desalination and Water Treatment
·
2024
·
IF 1
Debo Wu,Xingmin Gao,Shuiping Yang,Winston Duo Wu
Sequential removal of phenol and As(V) from co-contaminated water by ferrate (Fe(VI)) was investigated. The results showed that a neutral pH condition favored the sequential of phenol and As(V) by Fe(VI). Around 70% of phenol was removed at neutral pHs with a Fe(VI): phenol molar ratio of 10:1. While about 50% of As(V) was finally removed under similar conditions. The presence of a high concentration of Cl – (up to 0.2 M) showed 6% inhibitory effect on the final removal percentage of phenol compared to that without Cl – . Fourier transform infrared spectroscopy, X-ray powder diffraction, and X-ray photoelectron spectroscopy analyses suggested that As(V) was removed through adsorption by the precipitates (amorphous iron (oxy)hydroxide), while phenol was removed via degradation (89%) and adsorption (11%), respectively. Removal of As(V) occurred immediately when phenol degradation was initiated, indicating a rapid generation of Fe(III)- (oxy)hydroxide. Our study also revealed that an excessive amount of Fe(III) ions in the aqueous phase did not facilitate the degradation of phenol. On the other hand, improving the precipitation rate of Fe(III) could further improve the removal efficiency of phenol and As(V).
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ENVIRONMENT INTERNATIONAL
·
2025
·
IF 9.7
Jiaqi Shi,Yan Li,Qi Wei,Xin Zhu,Shaohua Cao,Wenyi Xie,Yang Guo,Jing Wei,Zekai Li,Tao Long
The widely used rubber antioxidant N-(1,3-Dimethylbutyl)-N’-phenyl-p-phenylenediamine (6PPD) and its ozonated product, 6PPD-quinone (6PPD-Q), are highly toxic to aquatic life, yet understanding on their environmental behaviors is limited. This study comprehensively investigated their adsorption and transformation processes on natural Fe-Mn nodules (NFMN), which commonly exist in sediments and soils through a combination of diverse experimental and computational methods. The maximum adsorption capacity of 6PPD-Q (719.2 μg·g −1 ) is significantly higher than that of 6PPD (133.8 μg·g −1 ) at 293 K, and it is more difficult to desorb. They follow different kinetic and isothermal adsorption models, and environmental conditions (including temperature, pH, and anions) exert distinct influences on the adsorption of the two substances. Adsorption mechanisms involving electrostatic attraction, charge transfer, hydrogen bonding, and Lewis acid-base complexation were unveiled. For 6PPD, electrostatic adsorption and Lewis acid-base complexation contribute significantly to its adsorption. Conversely, for 6PPD-Q, the contribution of Lewis acid-base complexation outweighs that of hydrogen bonding, while the effect of electrostatic adsorption is relatively negligible. The stronger electrostatic attraction, more efficient charge transfer, and a greater number of binding sites for hydrogen bonding and Lewis acid-base complexation with NFMN results in more robust adsorption of 6PPD-Q. Furthermore, 6PPD can transform into 6PPD-Q on NFMN, facilitated by dissolved Mn(III). This study advances understanding of the adsorption behavior and mechanism of 6PPD and 6PPD-Q, and highlights a new pathway for 6PPD-Q formation, which provides valuable reference for assessing the water body exposure risks and formulating environmental remediation strategies for such pollutants. Environmental Implication This study offers the first comprehensive insight into the interactions between 6PPD/6PPD-Q and NFMN, illuminating their environmental behavior in water and soil systems. It reveals the adsorption discrepancy between 6PPD and 6PPD-Q, and elucidates the mechanisms underlying the difference in adsorption. Additionally, it uncovers a novel pathway for 6PPD-Q formation, offering valuable implications for risk assessment and environmental remediation strategies.
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PubMed
高影响因子
MOLECULES
·
2024
·Vol. 29
·期 9
·1946
·
IF 4.2
Yan Ma,Kai Wang,Sikai Liang,Zhongqing Li,Zhiyuan Wang,Jun Shen
The Mn-Fe oxide material possesses the advantages of abundant availability, low cost, and non-toxicity as an energy storage material, particularly addressing the limitation of sluggish reoxidation kinetics observed in pure manganese oxide. However, scaling up the thermal energy storage (TCES) system poses challenges to the stability of the reactivities and mechanical strength of materials over long-term cycles, necessitating their resolution. In this study, Mn-Fe granules were fabricated with a diameter of approximately 2 mm using the feasible and scalable drop technique, and the effects of Y2O3-stabilized ZrO2(YSZ) and SiO2doping, at various doping ratios ranging from 1–20 wt%, were investigated on both the anti-sintering behavior and mechanical strength. In a thermal gravimetric analyzer, the redox reaction tests showed that both the dopants led to an enhancement in the reoxidation rates when the doping ratios were in an appropriate range, while they also brought about a decrease in the reduction rate and energy storage density. In a packed-bed reactor, the results of five consecutive redox tests showed a similar pattern to that in a thermal gravimetric analyzer. Additionally, the doping led to the stable reduction/oxidation reaction rates during the cyclic tests. In the subsequent 120 cyclic tests, the Si-doped granules exhibited volume expansion with a decreased crushing strength, whereas the YSZ-doped granules experienced drastic shrinkage with an increase in the crushing strength. The 1 wt% Si and 2 wt% Si presented the best synthetic performance, which resulted from the milder sintering effects during the long-term cyclic tests.
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PubMed
高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Junlong Feng,Le Hu,Xiaowei Wu,Ziqin Liu,Kaiquan He,Pu Hu,Chaoqun Shang
The uncontrollable Li dendrite accumulation accompanied by low Coulombic efficiency severely hampers the sustainable and practical application of lithium metal batteries (LMBs). To tune the uneven Li + flux caused by irregular pores on commercial separator and realize modulated Li + plating/stripping behaviors, in this work, we report the modification of commercial polypropylene separator with etched Co/Fe-based Prussian blue analogue (PP@PBA-X, X represents the HCl etching time). The optimal PBA-4 with acid etching for 4 h possesses regulated micro-/meso-/macro-porous structure, which ensures homogeneous Li + flow of PP@PBA-4 with high Li + transference number of 0.76 and further hinders the growth of Li dendrites. With the assistance of PP@PBA-4, the Li||Li cell shows stable cycling performance for 500 h at 1 mA cm −2 with fixed specific capacity of 1 mAh cm −2 , while the full Li-S battery with limited Li supply delivers favorable cycling stability for almost 430 cycles with 60 % capacity retention and high Coulombic efficiency of 99.95 % at current density of 500 mAg −1 .
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高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Jieling Liu,Changjin Mo,Yutong Wu,Jihui He,Xian Wang,Tao Wang,Rongzhou Gong,Yan Nie
Low-dimensional hybrid carbon networks with high electrical conductivity and low density are essential for designing lightweight and efficient microwave absorbing materials (MAMs). In this study, low-dimensional hybrid carbon networks with tailorable electromagnetic properties were successfully fabricated by a one-step method. These networks consist of (i) magnetic Fe nanoparticle-embedded, two-dimensional (2D) carbon lamellar structure and (ii) intertwined one-dimensional (1D) carbon nanotubes grown on the structure. These 1D-2D hybrid networks exhibit excellent electron transport, enhanced interfacial polarization, multiple loss mechanisms, and improved impedance matching. Consequently, they significantly boost MAM performance. With a 30 wt% absorbent filling fraction, the material achieves a reflection loss of less than − 10 dB across a frequency range of 5.0 GHz in the Ku band, with a matching thickness of only 1.67 mm. By tuning absorber thickness from 1.0 to 5.0 mm, the effective absorption bandwidth can reach up to 14.3 GHz, covering 89 % of the frequency range measured, and achieving a bandwidth of 10.0 GHz with 99 % absorption intensity. These results underscore a simple and effective strategy to construct low-dimensional hybrid carbon networks having tunable electromagnetic properties, that offers a promising pathway for the design of lightweight, broadband and efficient MAMs.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Yulan Zheng,Peng Cheng,Zikuo Li,Chuhao Fan,Jinchao Wen,Yue Yu,Li Jia
To achieve the efficient removal of gaseous elemental mercury in coal-fired flue gas, the study successfully prepared the isostructural bimetallic MOFs-based biochar composite by introducing the transition metal Fe into the UiO-66 by solvothermal method and using in-situ growth method for structural design. In addition, the effect of doping the secondary metal Fe and biochar on the Hg 0 removal performance and the corresponding quantitative correlation mechanism was established. The results showed that the overall mercury removal performance of the samples after Fe modification was improved. The optimal Fe loading ratio was 10 %, which corresponded to the adsorption capacity of 127.65 μg·g −1 . The biochar promoted the electron transmission and transfer of the overall reaction system by exerting the carrier effect. The 10 %Fe-UiO-66@20 %BC composite showed the best Hg 0 removal performance, with the corresponding adsorption capacity of 150.74 μg·g −1 . Fe 3+ , lattice oxygen, and chemisorbed oxygen jointly participated in the oxidation process of Hg 0 and finally oxidized Hg 0 to HgO.
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高影响因子
Journal of Composites Science
·
2025
·Vol. 9
·期 5
·250
·
IF 3.7
Waheed Rehman,Faiq Saeed,Samia Arain,Muhammad Usman,Bushra Maryam,Xianhua Liu
NiFe2O4and TiO2are widely studied for photoelectrochemical (PEC) applications due to their unique properties. Nitrogen-doped graphene (NG) and metal–organic frameworks (MOFs), such as MIL-100(Fe) (where MIL stands for Materials of Lavoisier Institute), are commonly incorporated to enhance PEC performance by offering a high surface area and facilitating efficient charge transport. Composite systems are commonly employed to overcome the limitations of individual PEC catalysts. In this study, a highly efficient NiFe2O4/NG@MIL-100(Fe)/TiO2photoanode was developed to enhance photoelectrochemical water-splitting performance. The composite was synthesized via a hydrothermal method with a two-step heating process. X-ray diffraction confirmed the expected crystal structures, with peak broadening in NiFe2O4indicating reduced crystallite size and increased lattice strain. X-ray photoelectron spectroscopy of the Ni 2p and Fe 2p regions validated the successful integration of NiFe2O4into the composite. Electrochemical analysis demonstrated excellent performance, with linear sweep voltammetry achieving a peak photocurrent density of 3.5 mA cm−2at 1.23 V (vs RHE). Electrochemical impedance spectroscopy revealed a reduced charge-transfer resistance of 50 Ω, indicating improved charge transport. Optical and electronic properties were evaluated using UV-Vis spectroscopy and Tauc plots, revealing a direct bandgap of 2.1 eV. The composite exhibited stable photocurrent under amperometric J-t testing for 2000 s, demonstrating its durability. These findings underscore the potential of NiFe2O4/NG@MIL-100(Fe)/TiO2as a promising material for renewable energy applications, particularly in photoelectrochemical water splitting.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2025
·
IF 3.9
Fu Xingyu,Chang Shufang,Sun Xiaoqin
Photocatalysis-peroxymonosulfate (PMS) activation system is regarded as a promising strategy for antibiotic degradation. Herein, a type-II SnS 2 /NiFe LDH heterojunction assembled by nanosheets was constructed to realize the dual modulation of photogenerated carrier directional migration and PMS activation sites. The intimate and large coupled interface facilitated the charge separation and transfer. And the optimization of the electronic structure in the heterojunction enabled good visible light absorption capacity. Benefiting from the construction of type-II heterojunction, the Fe 2+ /Fe 3+ and Ni 2+ /Ni 3+ redox cycles in SnS 2 /NiFe LDH had been greatly improved, which further promoted the PMS activation. The constructed heterojunction achieved excellent metronidazole (MNZ) degradation performance (93.9% removal within 30 min) via PMS activation-assisted photocatalysis under visible light irradiation, which was greatly enhanced compared to the control conditions of photocatalysis without PMS (3.5%) or without light irradiation (78.1%). It also demonstrated excellent stability and functioned well across a wide pH range (3–11). The quenching experiments revealed that ·OH and h + were the main reactive species for MNZ oxidation. The mechanism analysis further confirmed that the transfer of photogenerated carriers was consistent with the type-II mode. This study is expected to provide new insights into design and application of type-II heterojunction in PMS activation for efficient wastewater treatment. Graphical abstract
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2022
·
IF 7.139
Xu Yang,Rui Qiu,Ming-Jian Lan,Gang Chen,Wei Xu,Yu Shen
Designing the efficient, low-cost and stable electrocatalyst is of great significance for storage and conversion of the renewable energy to hydrogen. Herein, the binder-free Ni–Fe–S electrocatalysts were directly electrodeposited on Ni foam, which exhibited the excellent hydrogen evolution reaction performance with the overpotential of 51.4 mV at the current density of 10 mA cm −2 . Based on the analysis and results of as-synthesized Ni, Ni–Fe and Ni–S, the boosted electrocatalytic activity can be attributed to the composite effect between Ni and the introduced Fe and S. Additionally, the Ni–Fe–S electrocatalysts also displayed the low cell voltage (1.59 V at 10 mA cm −2 ), remarkable durability and high Faraday efficiency in overall water electrocatalysis . Moreover, the water electrolysis device with Ni–Fe–S bi-electrodes can be driven by a small wind power generation and producing 4 mL H 2 in 39 min, indicating the prepared Ni–Fe–S electrocatalyst has the great potentials in producing hydrogen via renewable energy.
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高影响因子
危险品化学品经营许可证（带存储）