COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Yi-Lin Sun,Ting Zhang,Wen-Yu Xu,Xiao-Peng Zhao,Fang-Ning Liu,Xiao-Jing Li,Huan-Qing Xie,Qing-Zhen Han,Jing-Hui He
Hydrogen peroxide (H 2 O 2 ) serves as both a versatile green oxidant and critical precursor for reactive oxygen species (ROS), with broad applications spanning environmental remediation to biomedical therapies. However, sustainable H 2 O 2 production remains challenging due to limitations in conventional photocatalysts, such as restricted visible-light response and inefficient charge separation. In this work, we developed a novel zinc-functionalized ionic covalent organic framework (iCOF) through strategic metal coordination. By anchoring Zn 2+ ions to pyridinic nitrogen sites within a bipyridine-triaminoguanidine framework (BDTD), the resulting Zn-BDTD material maintained structural crystallinity-unachievable with Pt, Pd, or Ag analogues-while significantly enhancing visible-light harvesting, charge transport, and oxygen adsorption. This engineered material achieves a photocatalytic H 2 O 2 synthesis rate at 1522.6 μmol·g -1 ·h -1 under the visible light (λ > 420 nm), representing the 31% increase over pristine BDTD (1160.9 μmol·g -1 ·h -1 ) with a 3.47% apparent quantum yield at 420 nm. In addition, its potent antibacterial activity achieving >99% inactivation of clinical isolates ( Staphylococcus aureus, Pseudomonas aeruginosa ) at 10 μg/mL under visible light irradiation. Mechanistic studies reveal a synergistic dual-pathway H 2 O 2 generation mechanism, combining dominant 2e - oxygen reduction (stabilized by Zn-coordinated superoxide radicals) with auxiliary 2e - water oxidation. Density functional theory calculations confirm Zn coordination drastically reduces the energy barrier for O 2 adsorption (ΔG = −1.39 eV vs. +1.19 eV for BDTD). This work establishes metal-coordinated iCOFs as a versatile platform for integrated chemical synthesis and antimicrobial applications, particularly against clinical isolates.
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高影响因子
Microorganisms
·
2021
·Vol. 9
·期 11
·2258
·
IF 4.128
Xinya Zhang,Yiruo Xia,Yunlu Jia,Assaf Sukenik,Aaron Kaplan,Chanyuan Song,Guofei Dai,Fang Bai,Lin Li,Lirong Song
Mitigation of harmful cyanobacterial blooms that constitute a serious threat to water quality, particularly in eutrophic water, such as in aquaculture, is essential. Thus, in this study, we tested the efficacy of selected cyanocides towards bloom control in laboratory and outdoor mesocosm experiments. Specifically, we focused on the applicability of a group of cationic disinfectants, alkyltrimethyl ammonium (ATMA) compounds and H2O2. The biocidal effect of four ATMA cations with different alkyl chain lengths was evaluated ex situ usingMicrocystiscolonies collected from a fish pond. The most effective compound, octadecyl trimethyl ammonium (ODTMA), was further evaluated for its selectivity towards 24 cyanobacteria and eukaryotic algae species, including Cyanobacteria, Chlorophyta, Bacillariophyta, Euglenozoa and Cryptophyta. The results indicated selective inhibition of cyanobacteria by ODTMA-Br (C18) on both Chroccocales and Nostocales, but a minor effect on Chlorophytes and Bacillariophytes. The efficacy of ODTMA-Br (C18) (6.4 μM) in mitigating theMicrocystispopulation was compared with that of a single low dose of H2O2treatments (117.6 μM). ODTMA-Br (C18) suppressed the regrowth ofMicrocystisfor a longer duration than did H2O2. The results suggested that ODTMA-Br (C18) may be used as an effective cyanocide and that it is worth further evaluating this group of cationic compounds as a treatment to mitigate cyanobacterial blooms in aquaculture.
研究领域:
环境科学
·
水生生物学
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 46
·期 27
·13249-13259
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IF 3.925
Changning Xue,Lifen Zhang,Yuman Zhang,Yao Yu,Chenlu Xu,Zhi Li
Nonalcoholic fatty liver disease (NAFLD) is a typical metabolic disease caused by excessive accumulation of lipid in the liver. Lovastatin (Lov) is a representative of a classic lipid-lowering drug, but the drug has a lack of targeting, and the toxic and side effects are serious. Reactive oxygen species (ROS), which can lead to a “second strike” of NAFLD, eventually lead to cirrhosis and hepatic cancer. Therefore, a H2O2-responsive and self-fluorescence prodrug-nanosystem (PBI-Lov) has successfully been constructed. While consuming ROS and leading to breaking of the oxalate bond, it will result in the release of lovastatin. Negatively charged phosphatidylserine (PS) was coated on PBI-Lov to prepare PS-PBI-Lov nanoparticles. The uptake of PS-PBI-Lov nanoparticles could be increased both in HepG2 cells and RAW264 7 cells. Most importantly, these fluorescence nanoparticles realized rapid, real-time and high-precision detection in tetracycline mice. PS-PBI-Lov nanoparticles effectively targeted the liver, and decreased both lipid accumulation and vacuole structures in the liver, reducing the degree of fibrosis, and effectively reversing the NAFLD.
研究领域:
药理学
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纳米技术
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肝脏疾病
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代谢紊乱
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药物递送系统
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高影响因子
RSC Advances
·
2019
·Vol. 9
·期 35
·20323-20331
·
IF 3.049
Jiangkun Du,Yang Wang,Faheem,Tiantian Xu,Han Zheng,Jianguo Bao
H2O2 and persulfate (PDS) activated by iron are attracting much attention due to their strong oxidation capacity for the effective degradation of organic pollutants. However, they face problems such as requiring an acidic reaction pH and difficulty of Fe2+ regeneration. In this study, the simultaneous activation of H2O2 and persulfate by nanoscaled zero valent iron (nZVI) was investigated for the degradation of p-nitrophenol (PNP). The nZVI/H2O2/PDS oxidation system exhibited significantly higher reactivity toward PNP degradation than the systems with a single oxidant. A synergistic effect was explored between H2O2 and PDS during nZVI-mediated activation, and the molar ratio of H2O2/PDS was a key parameter in optimizing the performance of PNP degradation. The nZVI/H2O2/PDS system could function well in a wide pH range, and even 95% PNP was removed at an initial pH 10, thus markedly alleviating the pH limitations of Fenton-like processes. Both hydroxyl radicals and sulfate radicals could be identified during H2O2/PDS activation, in which H+ produced during PDS decomposition promoted H2O2 activation. The increase of oxidant concentration could significantly enhance the PNP degradation, while the presence of HCO3− and HPO42− exerted great inhibition. Furthermore, five degradation intermediates of PNP were detected and its degradation pathways in the nZVI/H2O2/PDS system were presented. This study reveals that the simultaneous activation of H2O2 and PDS by nZVI is a promising advanced oxidation tool as an alternative to typical Fenton processes for recalcitrant pollutant removal.
研究领域:
环境科学
·
化学工程
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PubMed
高影响因子
ENVIRONMENTAL RESEARCH
·
2021
·
IF 6.498
Zhen Li,Shuo Chen,Bingchuan Liu,Jiakuan Yang,Sha Liang,Keke Xiao,Jingping Hu,Huijie Hou
This study investigated a novel sodium iron chlorophyllin-H 2 O 2 (SIC–H 2 O 2 ) sludge pretreatment strategy before anaerobic digestion to enhance methane production. The efficiencies and mechanism of the proposed strategy to enhance sludge biodegradability were explored. The SIC–H 2 O 2 pretreatment could enhance the oxidation performance for sludge floc disintegration to dissociate TB-EPS into S-EPS increased SCOD to 521.38 mg/L. The increase of solubilization and release of EPS with the pretreatment facilitate the biogas production at 702 L kg −1 VS, which was 3-folds of the control and significantly higher than other pretreatments. The result of excitation–emission matrix and parallel factor (EEM-PARAFAC) analysis showed that the SIC–H 2 O 2 pretreatment enhanced the dissociation of TB-EPS fractions, especially the protein-like and soluble microbial by-product-like substances. Electron paramagnetic resonance (EPR) results provided evidence for homolytic catalysis H 2 O 2 for the generation OH and the production of high-valent (Por)Fe IV (O) intermediates. Synergistic effects of reactive oxygen species ( OH, H 2 O 2 and /HO 2 ) and (Por)Fe IV (O) enhanced the EPS disintegration during SIC–H 2 O 2 pretreatment. The mixed-acid type fermentation provided continuous VFAs supply under the enrichment of Chloroflexi and Actinobacteria and multiplication Methanosaeta also promoted methane production. This research provides a feasible pretreatment strategy increase sludge biodegradability and enhance biogas production in the anaerobic digestion process.
研究领域:
环境工程
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废物管理
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生物技术
·
化学工程
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PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Seohyeon Kim,Minsu Gu
To achieve stable and efficient photocatalytic production of hydrogen peroxide (H 2 O 2 ), this study presents a composite photocatalyst where a polydopamine (PDA) layer was formed on cuprous oxide (Cu 2 O) supraparticles via a straightforward self-polymerization of dopamine. By maintaining a constant amount of Cu 2 O and tuning the PDA concentration, the optimal formulation exhibiting the highest H 2 O 2 yield was identified. Structural and chemical analyses confirmed the uniform PDA coating and demonstrated that the composite effectively suppressed H 2 O 2 decomposition and maintained excellent stability over repeated cycles. This enhanced performance is attributed to improved charge transfer pathways between Cu 2 O and PDA. The band structure and electron transfer analysis further revealed that the composite follows a p-n type-Ⅱ heterojunction mechanism, enabling selective H 2 O 2 generation via the two-electron oxygen reduction reaction (ORR). We expect that this simple one-pot approach to constructing high-efficiency, scalable, and stable photocatalysts will offer new opportunities for green energy conversion and environmental remediation.
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高影响因子
ChemSusChem
·
2026
·Vol. 19
·期 4
·e202502442
·
IF 5.9
Wanchuan Jin,Aoyun Wang,Xinhua Li,Yuxin Wang,Yuanhong Liu,Ruishi Xie,Rongrong Luo,Yuanli Li
Photocatalytic hydrogen peroxide (H 2 O 2 ) production is a promising green and sustainable approach, but achieving high efficiency in pure water systems without the sacrificial agents remains a significant challenge. Here, gold (Au) nanoparticles with varying loadings are photodeposited onto the surface of ZnIn 2 S 4 (ZIS) nanoflowers to enhance photocatalytic H 2 O 2 production. The optimized Au 1000 -ZIS sample achieves an exceptional H 2 O 2 production rate of 906.13 µmol g −1 h −1 under pure water conditions, along with outstanding cycling stability. Mechanistic studies reveal that multivalent Au nanoparticles serve as efficient electron trapping sites, thereby significantly enhancing the spatial separation of photogenerated charge carriers and facilitating rapid charge transfer. This enhanced charge transfer kinetics facilitates H 2 O 2 photosynthesis through a dual-channel process (2-electron oxygen reduction and water oxidation) without any additional sacrificial agent. This study enhances the understanding of the critical role of Au as a cocatalyst in photocatalytic processes and presents a promising strategy for sustainable and efficient H 2 O 2 production. Graphical Multivalent Au nanoparticles loaded onto ZnIn 2 S 4 nanoflowers have been constructed to effective H 2 O 2 photosynthesis from pure water without sacrificial agents, in which Au cocatalysts act as an electron trap, boosting accelerated electron transfer kinetics and enabling a dual-channel oxygen reduction reaction/water oxidation mechanism, achieving a high yield of 906.13 µmol g −1 h −1 .
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PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Yue Wu,Haiyan Song
Visible light-driven hydrogen peroxide (H 2 O 2 ) production from natural seawater over covalent organic frameworks (COFs) is becoming a challenge. In this work, a polarization strategy via incorporating oxo-ether ( O ) functional groups into COFs architecture was attempted and demonstrated to significantly enhance photocarriers separation. The strategy interestingly transformed the COFs morphology from rod-like flower clusters to sheet-like flower clusters. Furthermore, the monomer 4,4′-oxydianiline (OD) of the oxo-ether functionalized COFs (TpOD-COF) obtained a cost efficiency that was about 1794 times higher than the monomer benzidine (BD) formed non-functionalized COFs (TpBD-COF). TpOD-COF in real seawater achieved 4598 μmol·g −1 ·h −1 of H 2 O 2 productivity, and 10.2% of apparent quantum yield (AQY) without electron-proton donors and pure oxygen (O 2 ), which was 1.91 times higher than TpBD-COF. Mechanism studies revealed that TpOD-COF not only satisfies the thermodynamic requirement for the 2e − oxygen reduction reaction, but also indirectly enhances H 2 O 2 production through water oxidation, thereby establishing a cycle system that goes from water (H 2 O) to O 2 and then indirectly to H 2 O 2 , which promotes the overall reaction kinetics. More importantly, the catalyst did not deactivate in seawater; instead, the presence of ions further promoted electron transfer. Furthermore, the polar oxygen atoms served as additional hydrogen bond acceptors, enhancing the hydrogen-bonding network architecture. The system suggested a powerful functional-groups-mediated polarization engineering for the development of highly efficient metal-free photocatalysts.
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高影响因子
JOURNAL OF FLUORESCENCE
·
2024
·Vol. 35
·期 4
·2059-2069
·
IF 2.6
Wu Xinru,Ruan Chen,Zhu Xinyue,Zou Lina,Wang Rong,Li Gaiping
Design and fabrication of integrated multifunctional probes with intrinsic catalytic and detection abilities is of great importance to simplify the operation in biosensing application with high sensitivity. Herein, dual-emitting lanthanide coordination polymers (Ln-CPs) were facilely prepared by self-assembly of guanine diphosphate (GDP), terephthalic acid (TA), Tb 3+ and Cu 2+ designated as Tb/Cu-GDP/TA CPs. The doped Cu 2+ endowed CPs with obviously enhanced peroxidase mimicking activity compared with free Cu 2+ . In the presence of H 2 O 2 , the probe catalyzed the oxidation of TA generating a new blue fluorescent product, while the fluorescence of Tb 3+ decreased simultaneously. Therefore, a new sensitive ratiometric fluorescent sensor for H 2 O 2 has been developed with a good linear range from 0.01 to 300 μM and limit of 1.62 nM. Moreover, the proposed platform could be extended to GSH ratiometric assay in the presence of H 2 O 2 , and interestingly, the detection performance could be easily adjusted by adding different concentration of H 2 O 2 . This work will facilitate the development of luminescent nanoenzymes based on Ln-CPs to construct the simple ratiomatric sensing platform.
研究领域:
材料科学
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纳米技术
·
生物分析
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配位化学
·
荧光传感
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Yuhua Dong,Jianbin Zheng
The work presented that by regulating the proportion between cobalt and 2-methylimidazole in distilled water, a series of Co-based imidazolate framework compounds with diverse shapes were synthesized at ambient temperature. The morphology and structural characteristics of the compounds were surveyed by scanning electron microscope, energy disperse spectra, powder X-ray diffraction and N 2 absorption-desorption. It was found by cyclic voltammetry that the zeolitic imidazolate framework compound synthesized at a ratio of 1:20 had the best electrocatalytic activity to H 2 O 2 reduction, therefore, the compound was chosen to fabricate a H 2 O 2 electrochemical sensor. Electrochemical studies indicated that the sensor had a determination limit of 0.7 μM and short response time within 3 s. The catalytic current was linear with H 2 O 2 concentration from 2.5 to 212.5, 212.5 to 1662.5 and 1662.5 to 6662.5 μM and the sensitivity were 12.2, 5.3 and 2.4 μA mM −1 cm −2 , respectively. Furthermore, the proposed sensor showed a good anti-interference capacity, repeatability and stability.
研究领域:
分析化学
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材料科学
·
电化学
·
生物传感器
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纳米材料
·
环境监测
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高影响因子
WATER SCIENCE AND TECHNOLOGY
·
2022
·Vol. 85
·期 6
·1813-1823
·
IF 2.43
Zhong Dan,He Fu,Ma Wencheng,Wu Yichuan,Dong Jiaju
In this study, we investigated using the main composition of pipe deposits from water distribution networks as catalyst to activate dual-oxidant H 2 O 2 /Na 2 S 2 O 8 system to produce radicals for perchloroethylene and chloramphenicol removal. According to the results, the degradation efficiency of perchloroethylene by H 2 O 2 /Na 2 S 2 O 8 system was 92.05% within 8 h. Due to the slow conversion between ≡Fe 3+ and ≡Fe 2+ , the hydroxylamine was introduced to reduce reaction time. As for the results, the degradation efficiency of chloramphenicol in the H 2 O 2 /Na 2 S 2 O 8 system with hydroxylamine assistance was 73.31% within 100 min. Meanwhile, several key affecting factors and the kinetic models were investigated. The primary radicals were identified by electron paramagnetic resonance and radical scavenging tests. Eleven degradation products were confirmed by high-resolution liquid chromatography-mass spectrometry. The result of this study provided the theoretical basis for resource utilization of pipe deposits in water treatment in case of emerging contamination events.
研究领域:
环境科学
·
水处理
·
材料化学
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高影响因子
ELECTROCHEMISTRY COMMUNICATIONS
·
2018
·
IF 4.66
Wei Zhou,Xiaoxiao Meng,Ljiljana Rajic,Yunfei Xue,Shuai Chen,Yani Ding,Kaikai Kou,Yan Wang,Jihui Gao,Yukun Qin,Akram N. Alshawabkeh
The performance of the Electro-Fenton (EF) process for contaminant degradation depends on the rate of H 2 O 2 production at the cathode via 2-electron dissolved O 2 reduction. However, the low solubility of O 2 (≈1 × 10 −3 mol dm −3 ) limits H 2 O 2 production. Herein, a novel and practical strategy that enables the synergistic utilization of O 2 from the bulk electrolyte and ambient air for efficient H 2 O 2 production is proposed. Compared with a conventional “submerged” cathode, the H 2 O 2 concentration obtained using the “floating” cathode is 4.3 and 1.5 times higher using porous graphite felt (GF) and reticulated vitreous carbon (RVC) foam electrodes, respectively. This surprising enhancement results from the formation of a three-phase interface inside the porous cathode, where the O 2 from ambient air is also utilized for H 2 O 2 production. The contribution of O 2 from ambient air varies depending on the cathode material and is calculated to be 76.7% for the GF cathode and 35.6% for the RVC foam cathode. The effects of pH, current, and mixing on H 2 O 2 production are evaluated. Finally, the EF process enhanced by the “floating” cathode degraded 78.3% of the anti-inflammatory drug ibuprofen after 120 min compared to only 25.4% using a conventional “submerged” electrode, without any increase in the cost.
研究领域:
环境科学
·
电化学工程
·
污染治理
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高影响因子
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