COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
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IF 4.9
Shuyu Chen,Zhengkai Wu,Xueying Cheng,Lu Chen,Yunning Chen,Yingna Guo,Changhua Wang,Qingkun Shang
In this work, we used a simple hydrothermal method to in-situ grow Zn 3 In 2 S 6 on MIL-100(Fe) octahedra, and obtained a MIL-100(Fe)@Zn 3 In 2 S 6 Z-scheme heterojunction photocatalyst. We systematically studied its performance in degrading phenol and p-nitrophenol (PNP) under visible light. MIL-ZIS 6 -2 can remove 89.1 % of phenol within 120 min and nearly 100 % of PNP within 60 min. Its photocatalytic activity to the degradation of phenol is 30.7 times and 1.7 times higher than that of MIL-100(Fe) and Zn 3 In 2 S 6 , respectively. And the photocatalytic activity to degrade PNP is 18.2 times and 1.4 times higher than MIL-100(Fe) and Zn 3 In 2 S 6 . Further research was conducted on its band structure and photocatalytic response mechanism through photoelectric performance, ultraviolet photo-electron spectroscopy, and electron spin resonance spectrometer testing. The results showed that the formation of Z-scheme heterojunction not only increased the specific surface area of the composite photocatalyst, enabling it to provide more reaction sites, but also effectively suppressed the recombination of photogenerated holes and electrons, improving the redox ability of the photocatalyst. This work provides a new perspective for constructing efficient Zn 3 In 2 S 6 -based composite photocatalysts and addressing environmental issues.
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Catalysts
·
2024
·Vol. 14
·期 8
·528
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IF 3.8
Dongsheng Xiang,Zhihao Wang,Jingwen Xu,Hongdan Shen,Xiaodong Zhang,Ning Liu
Photocatalysts, such as TiO2, are widely used in photoreduction. However, drawbacks like their wide band gap and short carrier lifetime lead to lower efficiencies with their use. Introducing defects and forming heterostructures of TiO2could extend the carrier’s light-harvesting range from UV to visible light and enhance its lifetime. Herein, an electron-beam irradiation-defected TiO2was induced in MIL-88B(Fe). The structure of the material was characterized using XRD, FT-IR, TEM, HRTEM, and XPS techniques. Remarkably, TiO2under 300 kGy electron-beam irradiation performed the best with a series of 0, 100, 300, and 500 kGy irradiation ratios. PL and UV–vis DRS were utilized to measure the material’s optical properties. The introduction of MIL-88B(Fe) expanded the light response range, reduced the optical band gap, and lengthened the carrier lifetime of the defective TiO2composite photocatalysts, resulting in superior TC photoreduction capabilities of 88B5%300, which degraded 97% of tetracycline (10 mg/L) in water after 120 min.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Qingchen Bai,Miao Wang,Kai Wang,Jingwei Liu,Fengyu Qu,Huiming Lin
Due to their rigid π-conjugated macrocyclic structure, organic sonosensitizers face significant aggregation in physiological conditions, hindering the production of reactive oxygen species (ROS). An acid-sensitive nanoassembly was developed to address this issue and enhance sonodynamic therapy (SDT) and emission. Initially, copper phthalocyanine (CuPc) was activated using a H 2 SO 4 -assisted hydrothermal method to introduce multiple functional groups (–COOH, –OH, and −SO 3 H), disrupting strong π–π stacking and promoting ROS generation and emission. Subsequently, negatively charged CuPc-SO 4 was incorporated into bovine serum albumin (BSA) to form CuPc-Fe@BSA nanoparticles (10 nm) with Fe 3+ ions serving as linkers. In acidic conditions, protonation of CuPc-SO 4 and BSA weakened the interactions, leading to Fe 3+ release and nanostructure dissociation. Protonated CuPc-SO 4 tended to self-aggregate into nanorods. This acidity-sensitive aggregation is vital for achieving specific accumulation within the tumor microenvironment (TME), thereby enhancing retention and SDT efficacy. Prior to this, the nanocomposites demonstrated cycling stability under neutral conditions. Additionally, the released Fe ions exhibited mimicry of glutathione peroxidase and peroxidase activity for chemotherapy (CDT). The synergistic effect of SDT and CDT increased intracellular oxidative stress, causing mitochondrial injury and ferroptosis. Furthermore, the combined therapy induced immunogenic cell death (ICD), effectively activating anticancer immune responses and suppressing metastasis and recurrence.
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Frontiers in Environmental Science
·
2024
·
IF 3.3
Lianjie Fan,Qinglin Xie,Yanhong Li,Shengzhang Zou,Haiping Lu,Su Ling Li,Xiaoxiao Li
Poultry manure is one of the important sources of antibiotic pollution in agricultural soil and groundwater. Recently, the excessive discharge of goat manure has resulted in groundwater environmental challenges and negative impacts. It is of practical significance that such wastes can be converted into functional materials to promote the resource utilization of waste and reduce the risk of antibiotic contamination. In this study, Fe (Ⅱ)-loaded goat manure biochar (Fe-GMC) was prepared by pyrolyzing goat manure and iron salts and used to activate peroxymonosulfate (PMS) for tetracycline (TC) degradation in groundwater. The as-prepared Fe-GMC exhibited good catalytic performance for PMS activation due to its porous surface and rich oxygen-containing groups. Under the conditions of catalyst dosage of 0.2 g/L, PMS dosage of 1.0 mM, and pH of 3.0, TC was removed 81.3% within 60 min. In addition, the TC degradation efficiency was inhibited to different extents by inorganic anions (HCO3−>Cl−>NO3−) in water. Furthermore, the quenching experiments, electron paramagnetic resonance (EPR) experiments, and X-ray photoelectron spectroscopy (XPS) spectra analysis indicated that the generation of hydroxyl radicals (•OH) was responsible for TC degradation. Particularly, Fe-GMC produces a strong oxidizing agent. This study provides an efficient and environmentally friendly tetracycline degradation catalyst, which offers a new theoretical basis for water environmental remediation.
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JOURNAL OF ELECTROCERAMICS
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2025
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IF 2.6
Lin Cheng,He Yuchan,Zhuang Wuyi,Chen Sili,You Zhixian,Zhao Guiying,Huang Zhigao,Li Jiaxin
The development of high-performance silicon/silicon oxide (Si/SiO x ) anodes has attracted great attention in the field of next-generation high-energy lithium-ion batteries (LIBs). However, preparing effective Si/SiO x composite materials to address issues such as poor cycling stability, subpar initial coulombic efficiency (ICE), and subpar interface compatibility remains a challenge. This work proposes a simple strategy for preparing Fe/Fe 3 C particle modified thin-layer carbon-coated Si/SiO x composite materials using a mixture of resorcinol formaldehyde (RF) precursor pyrolysis and ultrasonic treatment (referred to as C@Si/SiO x -Fe/Fe 3 C, abbreviated as CSSO-Fe/Fe 3 C). These composite materials are used as anodes for LIBs. Exploiting the benefits of its structure and composition, the CSSO-Fe/Fe 3 C anode offers a high ICE value of 68.7% and maintains a capacity of 563.2 mAh g −1 even after 1200 cycles at a current density of 2.5 A g −1 . Comprehensive characterization and electrochemical studies have elucidated the interface compatibility and structural stability mechanisms induced by the small amount of Fe/Fe 3 C doping and carbon coating, which explain the high capacity and stable cycling performance. Furthermore, when paired with LiCoO 2 cathode, the assembled LiCoO 2 ||CSSO-Fe/Fe 3 C coin-type full battery has a capacity of 80.7 mAh g −1 and a capacity retention rate of 76.6% after 200 cycles at 1.0 C. This synthesis approach offers valuable insights for designing high-performance Si/SiO x electrode materials.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Chuanyu Zhu,Lulu Zhang,Luyao Cui,Ziqiang Zhang,Rui Li,Yunfang Wang,Yawen Wang,Caimei Fan,Zhuobin Yu,Jianxin Liu
In the process of photocatalytic ammonia synthesis , efficient activation of nitrogen molecules constitutes a fundamental challenge. During the N 2 activation, the close interdependence between the acceptance and donation of electron results in their mutual limitation, leading to high energy barrier for N 2 activation and unsatisfactory photocatalytic performance. This work decoupled the electron acceptance and donation processes by constructing Fe-Bi dual active sites, resulting in enhancing N 2 activation through the high electron trapping ability of Fe 3+ and strong electron donating ability of Bi 2+ . The photocatalytic nitrogen reduction efficiency of 3%Fe/Bi 2 O 2.33 (118.71 μmol g cat −1 h −1 ) is 5.3 times that of Bi 2 O 2.33 (22.41 μmol g cat −1 h −1 ). In-situ Fourier transform infrared (In situ FTIR) spectroscopy and density functional theory (DFT) calculations manifest that Fe 3+ -Bi 2+ dual active sites work together to promote nitrogen adsorption and activation, and the reaction path is more inclined toward alternate hydrogenation path. N 2 adsorption and activation properties are optimized by heteronuclear bimetallic active sites, which offers a new way for the rational design of nitrogen-fixing photocatalysts .
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OPTICAL MATERIALS
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2025
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IF 4.2
Hanmin Zhong,Xiaoying Ye,Xueting Xie,Xianliang Song,Shucan Luo,Wenbei Situ
With the large surface area and excellent adsorption properties of MIL-101(Fe), MIL-101(Fe)/TiO 2 photocatalysts were prepared by chemical method and physical method in this research, respectively. The photocatalysts' performance on ethylene degradation was evaluated, and the photocatalyst prepared using the chemical method (CH-MT) performed better than that by physical method (PHY-MT) under the same conditions. Moreover, the photocatalysts' molecular structure was characterized by XRD, FTIR, UV–Vis DRS, BET, and XPS. The redox process of Ti 4+ /Ti 3+ of TiO 2 and Fe 3+ /Fe 2+ effectively prevents the complexation of e − -h + pairs. In this cycle, the oxidatively active substance (∙O 2 - ) is provided, which plays a key role in the ethylene degradation of MIL-101(Fe)/TiO 2 photocatalysts. Furthermore, in the BET analysis, CH-MT's specific surface area and pore volume were smaller than PHY-MT's, which improved ethylene absorption, enhanced the transfer of photogenerated carriers, and raised the photocatalytic reaction efficiency of CH-MT. The differences between MIL-101(Fe)/TiO 2 photocatalysts prepared by various methods were investigated and discussed, providing a new approach for MOF materials' application in agricultural areas.
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MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
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2024
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IF 4.2
Qi Ding,Hairong Li,Weining Liu,Dandan Huang,Xi Tan,Mingyang Zhao,Qionglin Cheng,Ming Yi,Yaqian Ren
Triethylamine (TEA) is easily volatilized and poses a huge health hazard. Therefore, the rapid detection of TEA is of great significance in environmental protection and industrial applications. In this paper, coral flower-like Fe-doped Co 3 O 4 was prepared using Co-MOF-74 as precursor. Compared with the pure Co 3 O 4 , Co 3 O 4 doped with 2 mol% Fe has better gas sensing performance of TEA. At an optimum operating temperature of 199 °C, the response to 100 ppm TEA is 21.2, five times higher than that of the pure Co 3 O 4 , with a short response recovery time (13 s/15 s). In addition, the gas sensor exhibits a certain selectivity and anti-humidity stability, with a minimum detection limit of 1 ppm at operating temperature. The higher Co 2+ /Co 3+ content in the sensor promotes the reaction of TEA with ionized oxygen, and amplifies the resistance change by adjusting the carrier concentration. Meanwhile, the introduction of Fe enriches the content of vacant oxygen and provides sufficient sites for the reaction and diffusion of TEA, further enhancing the sensing performance. In addition, Co 3 O 4 and Fe 2 O 3 combine to form p-n heterojunction , which helps to accelerate the gas adsorption-desorption process and improve the sensitive response speed. It creates a new design idea for the rapid detection of TEA gas by P-type metal-oxide semiconductors at relatively low operating temperatures.
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Nature Communications
·
2024
·Vol. 15
·期 1
·1-14
·
IF 14.7
Zhang Peng,Chen Hsiao-Chien,Zhu Houyu,Chen Kuo,Li Tuya,Zhao Yilin,Li Jiaye,Hu Ruanbo,Huang Siying,Zhu Wei,Liu Yunqi,Pan Yuan
Metal-nitrogen-carbon catalysts with hierarchically dispersed porosity are deemed as efficient geometry for oxygen reduction reaction (ORR). However, catalytic performance determined by individual and interacting sites originating from structural heterogeneity is particularly elusive and yet remains to be understood. Here, an efficient hierarchically porous Fe single atom catalyst (Fe SAs-HP) is prepared with Fe atoms densely resided at micropores and mesopores. Fe SAs-HP exhibits robust ORR performance with half-wave potential of 0.94 V and turnover frequency of 5.99 e −1 s −1 site −1 at 0.80 V. Theoretical simulations unravel a structural heterogeneity induced optimization, where mesoporous Fe-N 4 acts as real active centers as a result of long-range electron regulation by adjacent microporous sites, facilitating O 2 activation and desorption of key intermediate *OH. Multilevel operando characterization results identify active Fe sites undergo a dynamic evolution from basic Fe-N 4 to active Fe-N 3 under working conditions. Our findings reveal the structural origin of enhanced intrinsic activity for hierarchically porous Fe-N 4 sites.
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JOURNAL OF NON-CRYSTALLINE SOLIDS
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2025
·
IF 3.5
Jing Wei,Zhigang Zheng,Zhaoguo Qiu,Dechang Zeng
The removal efficiency of tetracycline (TC) by Fe-based amorphous (Fe am ) alloy was investigated through batch experiments, examining the effects of TC concentration, initial pH, and environmental temperature on its removal performance. The experimental results indicate that Fe am , owing to its amorphous structure and excellent catalytic properties, has a TC removal rate that is 2.75 times greater than that of zero-valent iron (ZVI) powder. Within the range of initial pH values from 4 to 7, the degradation efficiency for TC remains high, with nearly all removal rates reaching 99 % after 30 min of treatment. The results suggest that the removal process is primarily attributed to adsorption (by Fe 0 and its corrosion products) and reduction. The pH significantly influences the formation of iron corrosion products and the variations in TC species. The reactive adsorbed Fe 2+ plays a crucial role in the removal process. In addition to demonstrating effective removal capabilities for TC, Fe am also exhibits excellent removal performance for oxytetracycline (OTC) hydrochloride and chlorotetracycline (CTC) hydrochloride, underscoring its broad applicability among tetracycline antibiotics. In summary, this study provides a novel approach for the removal of tetracycline antibiotics from water.
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CHEMICAL ENGINEERING JOURNAL
·
2024
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IF 13.3
Xingyu Wu,Tiantian Feng,Xiaohong Zhu,Dong Dong,Qinxue Gao,Shufan Huang,Rui Huang,Dong Wang,Huayu Xiong,Zigong Wei,Yong Chen,Jichao Liang
Pharmacological treatments of diabetic ulcers remain a huge challenge due to the impaired angiogenesis and uncontrolled bacterial infection. Here, iminopyrazine-based Fe-covalent organic frameworks (Fe-COF) were synthesized via a subcomponent assembly strategy, and functionalized through covalent modification of L-arginine and encapsulated with photosensitizer IR780 and hyaluronic acid for enhancing diabetic wound healing. The functionalized Fe-COF (Fe-COF NRs) showed peroxidase-like activity and near-infrared (NIR)-controlled NO generation property, which can be used for synergistic photothermal/photodynamic antibacterial therapy and NO-based gas therapy. Treatment with Fe-COF NRs + NIR caused pathogenic elimination and enhanced angiogenesis, subsequently leading to accelerated wound healing in a rat model of infected diabetic wound. Mechanistically, the results from RNA sequencing analysis indicated that Fe-COF NRs treatment significantly induced the expression of genes involved in angiogenesis, but obviously inhibited the expression of proinflammatory cytokines. Gene Ontology enrichment and Kyoto Encyclopedia of Genes and Genomes pathway analysis revealed that collagen-containing extracellular matrix, hair follicle development, PI3K-Akt signaling pathway, wound healing and skin development were significantly enriched after Fe-COF NRs treatment. Taken together, Fe-COF NRs provide a novel therapeutic strategy for the treatment of infected diabetic wound.
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IEEE SENSORS JOURNAL
·
2024
·Vol. 24
·期 22
·36239-36246
·
IF 4.3
Dong Zhao,Honglie Chen,Kun Yang,Haoyu Wang,Xing Guo,Yang Ge,Xiushan Dong,Shengbo Sang
The application of competitive immunoassay brings many advantages to the detection of trace biomolecules and has the potential to be applied to urine-based clinical practice. However, this type of detection method has strict requirements for secondary antibody incubation processes and analysis equipment, leading to strong demands for convenient, rapid, and inexpensive detection platforms. In this study, a mechanical competitive immunosensor (MCI) was proposed for the detection of human serum albumin (HSA) based on goat anti-rabbit @Fe2O3 magnetic beads with magnetic sensitization. With the doping of Fe2O3, the conversion layer of MCI responds more accurately and rapidly to stress. In addition, goat anti-rabbit conjugated with animated Fe2O3 nanoparticles were introduced as secondary antibodies for signal amplification. Under the synergistic effect of the magnetic force of magnetic beads and the stress caused by the specific binding of antigen and antibody, the deformation of the film was amplified, which can effectively change the conductive pathway formed by doped carbon nanotubes, resulting in a larger output electric signal. Through competitive immunoassay for HSA, a limit of detection (LOD) of 68 ng/mL was achieved, which was an order of magnitude lower than direct detection methods. With high reproducibility and stability, MCI demonstrated effectiveness in the detection of HSA at a clinically significant concentration range (0.1–
$50 \; \mu $
g/mL). Moreover, MCI showed excellent specificity and selectivity, which held promise to offer an alternative tool for clinical diagnosis of urine HSA levels in nephrotic patients.
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