JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Bo Sheng,Yuhan Lin,Haiqing Xu,Jing Zhang
The efficient generation of active ferrous ions is essential for the continuous degradation of organic pollutants in the Fenton system; however, this process is significantly hindered by the sluggish reduction of ferric ions. In this study, commercial tourmaline (Tr), a natural silicate mineral, was employed to overcome this kinetic limitation. The Tr/Fe 3+ /H 2 O 2 (Tr + Fe 3+ + H 2 O 2 ) system achieved an accelerated redox cycle of Fe 3+ /Fe 2+ , rapid decomposition of H 2 O 2 , and enhanced removal of 2,4,6-trichlorophenol (TCP) within 30 min. Compared to the Fe 3+ /H 2 O 2 system, the Tr/Fe 3+ /H 2 O 2 system improved the degradation efficiency by 43-fold, even with low concentrations of H 2 O 2 (0.5 mM) and Fe 3+ (0.05 mM). Moreover, the system generated free hydroxyl radicals (•OH), super oxygen (O 2 •− ), and singlet oxygen ( 1 O 2 ), which contributed to the effective removal of various pollutants, including organic dyes, pharmaceuticals, and phenolic compounds. In-situ FTIR and XPS analyses revealed that the iron cycle was facilitated by surface Si–OH sites through the formation of Si–O–Fe bonds. Tourmaline also exhibited excellent recyclability and sustained reactivity in five consecutive experimental runs. Overall, this study presents a promising strategy to address the rate-limiting step of Fe 3+ /Fe 2+ conversion and promotes the application of natural minerals in iron-based advanced oxidation processes (AOPs).
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
·
IF 13.2
Man-Fang Cheng,Dong-Hua Xie,Rui Hu,Nuzahat Habibul,Guo-Ping Sheng
The Fenton catalytic process represents a promising advanced oxidation technology for the degradation of recalcitrant organic pollutants; however, its practical application is limited by issues such as catalyst agglomeration and restricted pH tolerance. In this study, a chitosan-derived Schiff base iron aerogel (CS-C=N-Fe) was synthesized via a cost-effective and environmentally friendly method at ambient temperature. The coordination between the Schiff base ligand and iron effectively dispersed the active sites and mitigated Fe agglomeration. The obtained aerogel exhibited a high sulfamethoxazole (SMX) removal efficiency of 96.2 % within 210 min under near-neutral conditions, with an apparent rate constant of 0.0951 min −1 . The catalyst maintained more than 70 % degradation efficiency after six consecutive cycles, and 91 % SMX removal during 24 h of continuous operation in a flow system, showing excellent structural stability and resistance to coexisting ions. The total organic carbon removal reached 29 % within 60 min, indicating effective oxidative mineralization of SMX intermediates. Mechanistic studies confirmed that hydroxyl radicals were the dominant reactive species. Density functional theory calculations further revealed that H 2 O 2 adsorption and decomposition on the CS-C=N-Fe surface occur with favorable energies (−0.987 eV and −0.747 eV, respectively), supporting efficient H 2 O 2 activation. These results highlight the CS-C=N-Fe aerogel as a robust, recyclable, and scalable Fenton-like catalyst capable of operating efficiently across a broad pH range (3.0–9.0), offering practical potential for the treatment of antibiotic-contaminated wastewater.
研究领域:
环境科学
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材料化学
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催化化学
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水处理技术
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化学工程
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CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Ping Hu,Jun Sun,Jialu Fang,Haiming Duan,Zhaofeng Wu
Exploiting the natural heteroatom composition of alfalfa, we synthesized a series of biochar from leaves and stems through controlled pyrolysis (300–600 ℃). Gas-sensing tests indicated that the leaf-derived material prepared at 300 ℃ (ALFLs-3) shows the highest response value to H 2 O 2 vapor among all eight materials. The enhanced gas-sensing performance is attributed to its unique wrinkled microstructure combined with heteroatoms (Ca, K, P), where ALFLs-3 generates substantial structural defects that facilitate the adsorption and activation of both O 2 and H 2 O 2 . The prepared material operates at room temperature and achieves a response of 154.99 (Δ I / I air ) to 500 ppm H 2 O 2 with rapid 21 s detection cycles, indicating certain competitiveness among room-temperature operable sensing materials. DFT calculations reveal that the co-doped system achieves well-balanced adsorption energies. The H 2 O 2 adsorption energy of −0.998 eV represents an optimal balance between high sensitivity and satisfactory reversibility, significantly stronger than those in single-element doped systems (e.g., −0.151 eV for Ca, −0.542 eV for K, and −0.081 eV for P). Meanwhile, the O 2 adsorption energy of −2.266 eV, the strongest among all configurations, facilitates efficient oxygen activation by promoting the formation of surface oxygen species. These findings clarify the origin of the improved sensing behavior. This work highlights the potential of plant organ-specific selection and low-temperature conversion strategies for transforming agricultural residues into functional gas sensing materials.
研究领域:
材料科学
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传感器与传感技术
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计算化学
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环境功能材料
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纳米材料
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高影响因子
ANALYTICA CHIMICA ACTA
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2020
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IF 5.977
Zhiqiang Zhou,Liyun Yang,Ling Huang,Yuanping Liao,Yi Liu,Qi Xiao
The selective and quantitative detection of H 2 O 2 is important for its employment in physiological, environmental and industrial applications. In this paper, a sensitive and selective strategy for H 2 O 2 detection was established based on the fluorescence quenching of CdSe@ZnS quantum dots (QDs) by H 2 O 2 -mediated etching process of Ag nanoclusters (AgNCs). In this strategy, dihydrolipoic acid (DHLA) modified AgNCs were applied as H 2 O 2 response group, the existence of H 2 O 2 could initiate the oxidation of AgNCs and the production of Ag + . CdSe@ZnS QDs are very sensitive to Ag + , which could give rise to the effective fluorescence quenching of CdSe@ZnS QDs. Based on this strategy, the present fluorescent assay could realize the quantification detection of H 2 O 2 and the limit of detection is calculated to be 0.3 μM under the optimum conditions. Furthermore, CdSe@ZnS/AgNCs hybrid-based probe was applied to detecting H 2 O 2 in milk samples and showed a good recoveries results ranged from 95.8% to 112.0%, meaning the potential applicability of this strategy.
研究领域:
分析化学
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生物医学
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高影响因子
CHINESE JOURNAL OF CHEMISTRY
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2021
·Vol. 39
·期 12
·3369-3374
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IF 6
Yuanyuan Jiang,Zhenyu Ding,Meng Gao,Chuanxia Chen,Pengjuan Ni,Chenghui Zhang,Bo Wang,Guangbin Duan,Yizhong Lu
Main observation and conclusion Highly dispersed ultrasmall ruthenium nanoparticles with a clean surface are deposited onto graphitic carbon nitride (C 3 N 4 -Ru) through spontaneous redox reaction between the C 3 N 4 sheets and Ru salt without the use of any reductant. The as-prepared C 3 N 4 -Ru exhibits distinct peroxidase-like activity. A nanozyme based method is successfully developed for detecting the H 2 O 2 generated in-situ by the two-electron oxygen reduction strategy. The C 3 N 4 -Ru nanozyme can realize the detection of H 2 O 2 with a wide linear range and a low detection limit. The testing results are also compared with the conventional modified titration method, and show greater possibility for the practical detection of H 2 O 2 produced via the electrochemical oxygen reduction for its higher selectivity.
研究领域:
材料科学
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分析化学
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生物医学工程
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ACS Nano
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2021
·
IF 15.881
Ming-Chen Sun,Xiao-Ling Xu,Yan Du,Xue-Fang Lou,Wei Wang,Yu-Chan You,Di Liu,Fei-Yang Jin,Jing Qi,Min-Xia Zhu,Lu-Wen Zhu,Jun Wang,Yong-Zhong Du
Extremely limited drug retention and depigmentation represent the greatest barriers against vitiligo treatment advancement. Here, inspired by biological melanosomes, the primary melanin transporter, we developed biomimetic melanosomes to combat reactive oxygen species (ROS)-mediated melanocyte damage and depigmentation. Briefly, methylprednisolone (MPS) and melanin-mimicking polydopamine (PDA) were encapsulated inside lysine–proline–valine (KPV)-modified deformable liposomes (KPV-Lipos). Owing to their phospholipid bilayer flexibility and the specific affinity for melanocortin 1 receptor (MC1R), KPV-Lipos exhibited 1.43-fold greater skin deposition than traditional liposomes. The binding of KPV and its receptor also contributed to activating the cAMP–tyrosinase (TYR) signaling pathway, improving the endogenous melanin content. In addition, PDA mimicked melanosomes as it effectively increased the exogenous melanin content and scavenged ROS. Meanwhile, MPS inhibited inflammatory cytokine secretion, limiting the depigmented area. Ultimately, the biomimetic melanosomes affected the skin color of mice with H2O2-induced vitiligo. These melanosomes show potential as a universal platform for the self-supply of melanin by self-driven melanin synthesis with exogenous supplementation. Furthermore, this study offers ideas for the production of artificial packed melanosome substitutes for melanocyte-related diseases.
研究领域:
药学
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皮肤科
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生物技术
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药理学
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高影响因子
APPLIED SURFACE SCIENCE
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2020
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IF 6.182
Peidong Hong,Yulian Li,Junyong He,Abdul Saeed,Kaisheng Zhang,Chengming Wang,Lingtao Kong,Jinhuai Liu
Heterogeneous Fenton technology is considered to be an effective method to solve the issues of antibiotic pollutants. In this study, a highly active surface exposed CoFe 2 O 4 catalyst was fabricated to activate hydrogen peroxide (H 2 O 2 ) to degrade aqueous doxycycline (DC). Batch experiments investigated the influence of different factors such as CoFe 2 O 4 dosage, H 2 O 2 dosage, contaminant concentration and pH on DC elimination. Remarkably, the results showed that 1.2 g/L CoFe 2 O 4 with 10 mM H 2 O 2 could quickly remove 92% DC of 20 ppm under neutral pH conditions in 10 min, and after 5 cycles, the removal of DC still remained above 85%. DMPO-X signals captured by EPR illustrated abundant hydroxyl radicals ( OH) were produced in the surface CoFe 2 O 4 /H 2 O 2 system swiftly and that was the dominant active oxygen species in the degradation of DC. The valence changes of Co 3+ /Co 2+ and Fe 3+ /Fe 2+ appeared on the surface of CoFe 2 O 4 provided many electrons to participate in the process of activating H 2 O 2 . Density functional theory (DFT) calculation was conducted to reveal preferable sites of different atoms on DC for radicals attacking. Combined with LC-MS analysis, two possible degradation pathways were proposed.
研究领域:
环境科学
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化学工程
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KOREAN JOURNAL OF CHEMICAL ENGINEERING
·
2016
·Vol. 33
·期 12
·3407-3416
·
IF 1.408
Wu Bo,Xiong Yuanquan,Ru Jinbo,Feng Hao
A novel NO removal system is designed, where NO is initially oxidized by •OH radicals from the decomposition of hydrogen peroxide (H 2 O 2 ) over hematite and then absorbed by ammonium-based solution. According to the high performance liquid chromatography (HPLC) profile and the isopropanol injection experiments, the •OH radicals are proved to play a critical role in NO removal. The NO removal efficiency primarily depends on H 2 O 2 concentration, gas hourly space velocity (GHSV), H 2 O 2 feeding rate and reaction temperature, while the flue gas temperature slightly affects the NO removal efficiency. The low H 2 O 2 consumption makes this system a promising technique in NO removal process using wet-method. The evolution of catalyst in reaction is analyzed by scanning electron microscopy (SEM), energy dispersive X-ray spectrometry (EDS), Fourier Transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD). The nitrite ion and nitrate ion in aqueous solution are detected by the continuous phase flow analyzer. Finally, the macrokinetic parameters of the NO oxidation are obtained by using the initial rate method.
研究领域:
环境科学
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化学工程
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JOURNAL OF ALLOYS AND COMPOUNDS
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2022
·
IF 6.371
Xingang Kong,Yanlei Li,Yue Zhang,Lifeng Zhang,Jianfeng Huang,Qi Feng
Usually, it takes 3–7 days to exfoliate the layered titanic acid H 1.07 Ti 1.73 O 4 (HTO) into Ti 1.73 O 4 1.07– (TO) nanosheet . The H 2 O 2 molecules can easily enter into the interlayers of the HTO crystal to form the H 2 O 2 intercalated HTO. The H 2 O 2 intercalation can achieve rapid exfoliation of HTO. It takes 1 h to exfoliate into a yellow H 2 O 2 -modified TO nanosheet, which has a wide absorption wavelength range and a narrow band gap. Moreover, such 2D nanosheet has a large specific surface area and a large number of reactive sites. And such yellow H 2 O 2 -modified TO nanosheet displays some visible photocatalytic hydrogen production performance. When the H 2 O 2 -TO nanosheet is loaded with Ni(OH) 2 , the sample can show a higher photocatalytic hydrogen production performance. The maximum photocatalytic hydrogen production rate of the Ni(OH) 2 -H 2 O 2 -TO catalyst is 32.48 μmol h −1 g −1 , which is 4.1 and 1.9 times higher than that of H 2 O 2 -TO and Pt-H 2 O 2 -TO. This is due to the formation of a type II heterojunction between the H 2 O 2 -TO nanosheet and Ni(OH) 2 . This heterojunction can achieve the effective separation of photogenerated carriers.
研究领域:
材料科学
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光催化
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高影响因子
AICHE JOURNAL
·
2026
·
IF 4
Zhiheng Wang,Ningning Wu,Jiali Huang,Tuo Ji,Han Lin,Liwen Mu,Xiaohua Lu,Jiahua Zhu
Direct synthesis of hydrogen peroxide (DSHP) from H 2 and O 2 is indeed a promising sustainable alternative to the conventional anthraquinone oxidation process, yet achieving high H 2 O 2 productivity and selectivity simultaneously remains a significant challenge. Herein, we designed a diode-inspired interfacial microenvironment to address this challenge by synchronizing the kinetic relay of the key transport and reaction steps in DSHP. Specifically, this microenvironment was fabricated by grafting hydrophobic silane molecules onto the carbon surface followed by loading palladium nanoparticles. Results indicate that the interfacial microenvironment enables an efficient relay of H 2 dissociation, H 2 O 2 formation and desorption, shutting down the reverse path of the side reaction. Benefiting from this diode-inspired interfacial design, high H 2 O 2 productivity of 21,647.1 mol kg Pd −1 h −1 and H 2 O 2 selectivity of 93.3% were successfully achieved under ambient conditions. This work demonstrated the critical role of the interfacial microenvironment in regulating the synergy between mass transfer and reaction in heterogeneous reaction.
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Journal of Water Process Engineering
·
2026
·
IF 6.7
Tariq Ali,Yiwei Li,Yuxian Wu,Yuke Zhang,Bingjie Fang,Saleem Raza,Ruidi Chen,Yeyuan Xiao
Photocatalytic technology offers a promising solution for degrading organic pollutants in wastewater. However, catalysts often suffer from limited light absorption and rapid electron-hole recombination. To address the challenges, we developed a heterogeneous TiO 2 /CoAl-LDH catalyst for photocatalytic degradation of dyes such as Acid fuchsin (AF) and methyl orange (MO) and real wastewater under UV light irradiation. The aligned band structures of TiO 2 and LDH enhanced UV light energy absorption and electron-hole separation, resulting in superior photocatalytic activity. In treating real dyeing wastewater, TiO 2 /CoAl-LDH + H 2 O 2 + UV achieved higher decolorization than UV/H 2 O 2 or catalyst/H 2 O 2 alone under the same operating conditions. The process within the early stage (0–45 min) followed pseudo-first-order kinetics (kₐₚₚ ≈ 1.50 × 10 −2 min −1 ), with a clear H 2 O 2 optimum at 40.8 mM. Excitation–emission matrix (EEM) fluorescence showed rapid quenching of protein-like (B/T) and humic/fulvic-like (A/M/C) peaks with blue-shifts under the TiO 2 /CoAl-LDH + H 2 O 2 + UV condition corroborating deeper oxidation and mirroring the ADMI decolorization trend (fast loss of B/T within 15 min, followed by progressive depletion of humic-like emission). This study presents a simple and cost-effective method for developing efficient hierarchical semiconductor materials potentially applicable as photocatalysts for wastewater treatment.
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SCIENCE PROGRESS
·
2025
·
IF 2.9
Jing Zhou,Guobo Du,Yi Li,Shiyao Liu,Xiaoyu Chen,Yue Peng,Xiaoming Wang
Objectives: To fabricate iron-doped WS2 (Fe-WS2) nanozymes with prominent peroxidase-like (POD-like) activity and explore their application in biomolecule detection. Methods: Fe-WS2 nanozymes were synthesized via a hydrothermal method, and their structural and chemical properties were characterized. The POD-like activity of the Fe-WS2 nanozymes was evaluated at different pH, temperatures, and substrate concentrations. Kinetic parameters were determined using the Michaelis–Menten equation. The detection capabilities of the Fe-WS2 nanozymes for H2O2 and glucose were assessed through colorimetric assays. Results: The synthesized Fe-WS2 nanozymes exhibited a uniform size distribution with an average diameter of approximately 300 nm. The successful loading of iron ions onto the WS2 nanosheets was confirmed by mapping and energy-dispersive X-ray spectroscopy analyses. The Fe-WS2 nanozymes demonstrated enhanced POD-like activity compared to unloaded WS2 nanozymes, as evidenced by the increased oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) in the presence of H2O2. The optimal conditions for POD-like activity were found to be at pH 4 and 55 °C. Kinetic analysis revealed that the Fe-WS2 nanozymes had a high affinity for both H2O2 and TMB, with low Michaelis constants (Km). The Fe-WS2 nanozymes-based colorimetric assay exhibited a wide linear range (0.2 to 1 mM) for H2O2 detection, with a low detection limit of 7.27 × 10−7 M. For glucose detection, the assay showed good selectivity and sensitivity, attributed to the specificity of glucose oxidase in catalyzing glucose oxidation. Conclusions: This study successfully developed Fe-WS2 nanozymes with remarkable POD-like activity, which were utilized to construct a sensitive and specific colorimetric biosensing system for the detection of H2O2 and glucose. The results indicate that the Fe-WS2 nanozymes have great potential for applications in biomedical diagnostics due to their high catalytic efficiency, stability, and excellent biocompatibility. This work not only provides a novel inorganic nanozyme biosensor but also opens up new avenues for the application of other nanozyme biosensors in the biomedical field.
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