COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
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IF 5.4
WeiChi Zhou,XueJiao Ding,WenFu Li,Liang Zhao,YinPeng Lu,MingHao Zhao,FuQiu Ma,ZhiDong Wen,HeXin Zhang,Jing Feng
As a green solution for environmental cleanup, the technology of photocatalysis still suffers from insufficient light absorption and rapid electron-hole recombination. In this study, the copper was deposited on MgO surface by a UV-assisted photodeposition method. It was found that the deposition of copper introduced oxygen vacancies, improved photogenerated charge carrier separation, and enhanced visible light absorption. These improvements were also attributed to the formation of a Schottky barrier and the localized surface plasmon resonance (LSPR) effect of copper species. The synergistic effects of multivalent copper species (Cu 0 , Cu + , Cu 2+ , and Cu 3+ ) and the oxygen vacancies introduced by the deposition of copper significantly promoted the generation of reactive oxygen species (·O 2 ⁻), thereby accelerating the degradation process and enhance the photocatalytic degradation activity toward Rhodamine B (RhB). The 3 %Cu-MgO exhibited the highest photocatalytic efficiency, degrading 92.8 % of RhB within 60 min. The corresponding pseudo-first-order reaction rate constant was 0.04359 min⁻ 1 , approximately twice that of pristine MgO. Notably, 3 %Cu-MgO demonstrated excellent photocatalytic performance over a broad pH range (3.6–10) and maintained good cyclic stability. The study clarifies the multifaceted function of valence-variable copper species in the photo-Fenton process and provides a meaningful reference for the design and exploration of other multivalent metal-based photo-Fenton catalysts in future studies.
研究领域:
环境科学
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光催化
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材料化学
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表面科学
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高级氧化过程
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产品关联
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2017
·Vol. 164
·期 4
·B92
·
IF 3.259
Jingchao Zhang,Chunying Xu,Daojun Zhang,Jingli Zhao,Shuxian Zheng,Huimin Su,Feifei Wei,Baiqing Yuan,Carlos Fernandez
The synthesis of a novel hierarchical flower-like NiS via a solvothermal method for the electrochemcial oxidation of H2O2 on a carbon paste electrode with high catalytic activity for the (MOR) in an alkaline medium has been reported. Novel nickel sulfide (NiS) hierarchical flower-like structures were characterized by X-ray diffraction, scanning electron microscope, and transmission electron microscopy. A carbon paste electrode was modified with the as-prepared hierarchical flower-like NiS, resulting in a high electrocatalytic activity toward the oxidation of H2O2. The NiS-modified electrode was used for H2O2 sensing, which was achieved over a wide linear range from 0.5 μM to 1.37 mM (I/μA = −0.19025 + 0.06094 C/mM) with a low limit of detection (LOD) of 0.3 μM and a limit of quantitation (LOQ) of 0.8 μM. The hierarchical flower-like NiS also exhibited a high electrocatalytic activity for the methanol oxidation reaction (MOR) in an alkaline medium with a high tolerance toward the catalyst-poisoning species generated during the MOR. The MOR proceeded via the direct electrooxidation of methanol on the oxidized NiS surface layer because the oxidation peak potential of the MOR was more positive than that of the oxidation of NiS.
研究领域:
材料科学
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电化学
·
分析化学
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DOI
高影响因子
Nanoscale
·
2017
·Vol. 9
·期 13
·4508-4515
·
IF 7.367
Na Lu,Min Zhang,Lei Ding,Jing Zheng,Caixia Zeng,Yanli Wen,Gang Liu,Ali Aldalbahi,Jiye Shi,Shiping Song,Xiaolei Zuo,Lihua Wang
Herein, we have developed a simple and facile method to synthesize yolk–shell nanostructured Fe3O4@C nanoparticles (NPs) as a multifunctional biosensing platform for the label-free colorimetric detection of H2O2 and glucose. It was demonstrated that Fe3O4@C yolk–shell nanostructures (YSNs) retained the magnetic properties that can be used for separation and concentration. Also importantly, the Fe3O4@C YSNs exhibited an intrinsic peroxidase-like activity that could quickly catalyze the enzyme substrate in the presence of H2O2 and produce a blue color. Compared to other similar ferric oxide-based NPs with different structures, Fe3O4@C YSNs exhibited greatly enhanced catalytic activities due to their unique structural features. Moreover, steady-state kinetics indicated the catalytic behaviors in agreement with the classic Michaelis–Menten models. Taking advantage of the high catalytic activity, Fe3O4@C YSNs were employed as novel peroxidase mimetics for label-free, rapid, sensitive, and specific colorimetric sensing of H2O2 and glucose, suggesting that Fe3O4@C YSNs have the potential for construction of portable sensors in the application of point-of-care (POC) diagnosis and on-site tests.
研究领域:
纳米技术
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生物化学
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分析化学
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材料科学
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Danyu Zhang,Tongcai Liu,Kai Yin,Chengbin Liu,Yuanfeng Wei
Cathode materials with high activity, selectivity and stability are essential to efficient electrochemical H 2 O 2 generation. Herein, nitrogen-doped porous carbon (NPC) is synthesized via direct calcination of nitrogen-containing metal organic framework. The N doping into porous carbon boosts H 2 O 2 generation, thus enhancing electro-Fenton activity. The NPC cathode exhibits a highly selective reduction of O 2 to H 2 O 2 (96.4% at pH 1 and −0.1 V vs SCE) and H 2 O 2 production rate reaches 52.3 mmol·L −1 h −1 (pH 1, −0.6 V vs SCE). Moreover, NPC achieves a high current efficiency of 87.7% for H 2 O 2 production (pH 1, −0.5 V vs SCE). The removal efficiency of oxcarbazepine antibiotics achieves 100% in 10 min ([Fe 2+ ] = 1.0 mmol L −1 , C 0 = 12.61 mg L −1 (50 μmol L −1 ), pH 1–5, −0.5 V vs SCE), and total organic carbon (TOC) removal efficiency reaches 90.7% in 60 min. Additionally, the removal efficiency of other antibiotics of prednisolone, chloramphenicol and thiamphenicol reaches 97.0–98.8% in 10 min and the TOC removal efficiency achieves 70.8–92.0% in 60 min. Moreover, NPC shows an excellent electrochemical stability. This work is valuable for designing electro-Fenton catalysts with high activity, selectivity and stability.
研究领域:
环境科学
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材料科学
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化学工程
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DOI
高影响因子
CHEMOSPHERE
·
2019
·
IF 5.108
Jiajie Xu,Guodong Dai,Biyu Chen,Donglin He,Yue Situ,Hong Huang
An efficient heterogeneous photocatalytic process coupling photocatalysis and Fenton-like process was carried out, where the Fenton-like cycle could be driven by self-produced H 2 O 2 rather than extra H 2 O 2 addition. It was revealed that C 3 N 4 por exhibited good performance at H 2 O 2 production in pure water, which was enhanced up to eight times than bare g-C 3 N 4 . Fenton-like cycle was constructed in Ti 3+ -TiO 2 -C 3 N 4 por as C 3 N 4 por severed as H 2 O 2 donator, while the Ti 3+ -TiO 2 was able to provide photoinduced electrons for the Fenton-like process, resulting in the generation of much more OH radical. In addition, ESR spectra were performed to confirm the promotion of the Fenton-like cycle and much more OH radical was detected in Ti 3+ -TiO 2 -C 3 N 4 por than Ti 3+ -TiO 2 -C 3 N 4 due to the great improvement in H 2 O 2 production of C 3 N 4 por. What’s more, the feasible photocatalytic mechanism of Ti 3+ -TiO 2 -C 3 N 4 por composite was also proposed.
研究领域:
环境科学
·
材料科学
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DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·
IF 3.9
Chen Chen,Guo Yan,He Leilei,Liang Ying,Zhang Mingxin,Wang Wenmin,Chen Yuliang,Wu Yuliang,Meng Rui,Huang Weiwei,Yang Fei,Cheng Jun,Yi Xuesong
The development of efficient and cost-effective catalytic systems for antibiotic degradation remains a significant challenge in environmental remediation. Herein, a novel Co/CuFe 2 O 4 composite was synthesized via a sol–gel combustion method to construct a multi-metal synergistic photocatalytic-Fenton-like system for the degradation of oxytetracycline (OTC). Density functional theory (DFT) calculations indicate that the incorporation of Co leads to a more negative material formation energy, suggesting that Co/CuFe 2 O 4 has a more stable electronic structure. This optimized electronic structure enhances the redox cycle (Fe 3+ /Fe 2+ , Cu 2+ /Cu + , and Co 2+ /Co 3+ ), thereby improving the activation efficiency at low concentrations of H 2 O 2 (0.1–6 mmol/L). Under optimal conditions (pH 3, 35 °C, 4 mmol/L H 2 O 2 ), the 13% Co/CuFe 2 O 4 catalyst achieved complete OTC degradation within 60 min, with an 0.1 mmol/L H 2 O 2 utilization rate of 17.81% at neutral pH. Moreover, the catalyst exhibited excellent stability, retaining 87.5% degradation efficiency after five cycles. Radical quenching experiments confirmed that ·OH, h + , and ·O 2 − were the dominant reactive species, while the synergistic effect of multiple metal redox pairs facilitated efficient electron transfer and H 2 O 2 activation. This work provides a promising strategy for designing high-performance Fenton-like catalysts with broad pH adaptability and low oxidant consumption, offering significant potential for the treatment of antibiotic-contaminated wastewater. Graphical
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高影响因子
DIAMOND AND RELATED MATERIALS
·
2024
·
IF 4.3
Lei Ge,Yingjie Ding,Chaoyang Zhu,Zezhong Xu,Hongdian Lu,Kunhong Hu,Ping Chen,Jinsong Xie
The electrochemical two-electron water oxidation reaction (2e-WOR) offers a promising avenue for hydrogen peroxide (H 2 O 2 ) production. It is crucial to design electrocatalysts with high selectivity, yield, resource abundance, and environmental friendliness. In this paper, as a new generation 2e-WOR electrocatalyst, the WO 3-X /CNTs@carbon fiber membrane nanostructure with abundant oxygen-rich vacancy (O V ) has been discovered by a series of test techniques including XRD, FE-SEM, TEM, FT-IR, Raman and XPS, comprising interconnected carbon nanotubes and carbon fibers enveloped in WO 3 nanorods with oxygen-rich vacancies. By comparing the specific surface area of WO 3-x /CNTs@carbon fiber membrane at different temperatures, it was observed that the maximum value is 44.09 m 2 /g when the mass ratio of AMT to PAN was 3:2 at 600 °C. Furthermore, the WO 3-X /CNTs@carbon fiber membrane can be directly utilized as an independent electrode. The electrochemical performance test revealed that the Faraday efficiency of the WO 3-X /CNTs @CF-600-2 can reach 54 % (2.48 V vs RHE (reversible hydrogen electrode)), while the H 2 O 2 yield can achieve 10.3 μmol· min −1 ·cm −2 , nearly ten times higher than that of pure WO 3 . Furthermore, the stability testing demonstrated that after 12 h, the WO 3-X /CNTs @CF-600-2 exhibited excellent stability with minimal change in its Faraday efficiency. This enhancement is attributed to the improved selectivity of WO 3 , excellent electrical conductivity, and mass transfer performance of carbon fiber. Finally, we proposed a mechanism for 2e-WOR and provided some perspectives on this reaction along with summarizing recent discoveries.
研究领域:
材料科学
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环境科学
·
电化学
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DOI
高影响因子
ELECTROCHIMICA ACTA
·
2018
·
IF 5.116
Zihan Wei,Zhenyin Hai,Mohammad Karbalai Akbari,Zhenting Zhao,Yongjiao Sun,Lachlan Hyde,Francis Verpoort,Jie Hu,Serge Zhuiykov
Surface functionalization of two-dimensional (2D) WO 3 nanofilms by noble metal (NM) nanoparticles (NM = Ag, Pt and Pd) was successfully achieved for the first time via combination of the atomic layer deposition (ALD) process and electrochemical deposition method. Deposited NM nanoparticles were uniformly in the particle size and homogeneously dispersed on the surface of 2D WO 3 . They represented electrochemically active metal-semiconductor hybrid nanocomposites with the larger electroactive area, and consequently, substantially enhanced the electrochemical H 2 O 2 detection of the device based on functionalized 2D WO 3 nanofilms. Functionalization by Ag was found to be more efficient compared to the same functionalization by Pt and Pd nanoparticles. Particularly, Ag 200 -WO 3 nanofilms exhibited the best electrochemical performance with a high sensitivity of 282 μA mM cm −2 , extremely wide linear H 2 O 2 concentrations range from 0.2 μM to 33.6 mM, a low detection limit of 0.1 μM, fast response time of 2 s and an excellent selectivity and long-term stability. Surface functionalization by NM nanoparticles approach has clearly demonstrated the great potential in the development of hybrid nanostructured electrode for various devices with enhanced electrochemical capabilities.
研究领域:
材料科学
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电化学
·
纳米技术
·
传感器与生物传感器
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DOI
高影响因子
Journal of Materials Chemistry B
·
2015
·Vol. 3
·期 13
·2651-2659
·
IF 4.726
Chi Yang,Ling-wei Hu,Hong-Yan Zhu,Yong Ling,Jin-Hua Tao,Chun-Xiang Xu
Throughout the years, reported intracellular H2O2 sensors just focused on unrelated measurements of intracellular H2O2 generated from the stimulus of Cd2+, ascorbic acid (AA) etc., leading to difficulty in data interpretation. Here, a novel reduced graphene oxide quantum dots (rGO QDs)/ZnO hybrid nanofibers-based electrochemical biosensor for the detection of intracellular H2O2 released from cancer and normal cells under the stimuli of the corresponding anticancer drugs permits a quantitative study of the interaction between the target drug compound and the cancer cell, which is suitable for candidate drug screening. Nylon 6/6 nanofibers are used as robust templates for the facile fabrication of novel rGO QDs/ZnO hybrid nanofibers via electrospinning followed by a step hydrothermal growth method. The as-made sensor was applied to determine H2O2 released from a prostate cancer cell (PC-3) versus a noncancerous cell (BPH-1) under the stimuli of the corresponding anticancer drugs (apigenin, antisense CK2α etc.). The amount of H2O2 released from the PC-3 cancer cell is about (320 ± 12) amol per cell and about (210 ± 6) amol per cell for the BPH-1 noncancerous cell under the stimuli of specific therapy drug antisense CK2α. These results demonstrate that the rGO QDs/ZnO hybrid nanofibers-based electrochemical biosensor can efficiently detect the distinct amounts of H2O2 released from cancer and noncancer cells.
研究领域:
生物医学工程
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纳米医学
·
肿瘤学
·
药物筛选
·
电化学传感
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DOI
高影响因子
JOURNAL OF ENVIRONMENTAL ENGINEERING
·
2021
·Vol. 148
·期 1
·04021072
·
IF 1.86
Ting Su,Xiaoning Wang,Xinan Chen,Yan Cheng,Zhenkai Wang,Zhangxiong Wu,Winston Duo Wu,Sheng-Peng Sun
The ferric-nitrilotriacetate (Fe3+-NTA)-catalyzed homogenous Fenton-like reaction (i.e., Fe3+-NTA/H2O2) has received increasing interest for environmental applications, but its potential in degrading trichloroethylene (TCE) in groundwater still is not well known. The results of this study showed that Fe3+-NTA/H2O2 was more effective than other Fe3+-chelate/H2O2 processes (e.g., including ethylenediaminetetraacetate, ethylenediamine-N,N′-disuccinate, citrate, malonate, and tartrate) in degrading TCE in groundwater at natural pH (∼8.0). The effects of important parameters including the ratio of NTA∶Fe3+, and the dosages of Fe3+-NTA and H2O2 were investigated. Greater than 98% degradation efficiency of TCE in actual groundwater was obtained after 60 min of reaction time under the given conditions of NTA∶Fe3+=1.5∶1, 0.1 mM Fe3+-NTA, 5 mM H2O2, and pH 8.0. Hydroxyl radical (HO•) was responsible for the degradation of TCE, and the by-products were identified as formic acid and chloride ion (Cl−). Greater than 90% degradation efficiency of TCE in a sand column was achieved under dynamic conditions [0.5 mM Fe3+-NTA (1∶1.5), 4 mM H2O2, and hydraulic retention time of 4 h], resulting in stoichiometric ratios of ΔCl−∶ΔTCE and ΔTCE∶ΔH2O2 of ∼3∶1 and 4%, respectively. Compared with iron mineral (e.g., magnetite)-catalyzed Fenton-like processes, Fe3+-NTA/H2O2 led to much smaller consumption of H2O2 (at least 1 order of magnitude smaller). In addition, the buffering capacity of bicarbonate anions (HCO3−) in groundwater had a positive effect on the degradation of TCE by Fe3+-NTA/H2O2.
研究领域:
环境科学
·
化学工程
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DOI
高影响因子
Catalysis Science & Technology
·
2026
·
IF 4
Xiaojuan Bai,Yihan Cao,Dailu Zhang,Chi Zhang
Suppressing ultrafast charge recombination remains a central challenge in semiconductor photocatalysis. Herein, we report a cross-conjugation-driven charge concentration polarization strategy for promoting charge separation in imide-linked porous organic polymers. Two polymers with distinct conjugation topologies, TAPB–PMDA and TAPB–HPMDA, were constructed as model systems to elucidate the relationship between conjugation structure and charge migration behavior. Compared with the TAPB–HPMDA, the cross-conjugated TAPB–PMDA induces asymmetric electron delocalization and establishes a spatial gradient of photogenerated electron density within the polymer framework, which enables efficient charge separation. The locally high electron concentration microenvironment, regulated by charge gradient polarization, activates the CO bonds, significantly optimizing O2 adsorption and activation while stabilizing the ·OOH intermediate. Consequently, this material exhibits a highly selective two-electron oxygen reduction to H2O2 reaction, achieving a yield of 2440.74 μmol g−1 h−1 in pure water along with improved photocatalytic degradation of antibiotics, including rapid removal and significant mineralization of ciprofloxacin. After adding benzyl alcohol as a sacrificial agent, the yield was further increased to 16 350 μmol g−1 h−1. This work provides mechanistic insight into how molecular polarization in porous organic frameworks influences reactive oxygen species generation, offering a design strategy for developing efficient organic photocatalysts for sustainable water purification.
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DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19.9
Yue An,Na Tian,Wenying Yu,Xiaolei Zhang,Yiwei He,Haitao Liu,Yihe Zhang,Hongwei Huang
The efficient synthesis of hydrogen peroxide (H 2 O 2 ) through piezo-photocatalysis is a promising yet challenging sustainable route, primarily limited by inefficient charge separation and sluggish surface reaction kinetics. This study introduces an innovative bi-ionic (K + /Ca 2+ ) co-doping strategy to engineer graphitic carbon nitride, creating a high-performance catalyst for H 2 O 2 production. The bi-ionic doping structure, combined with introduced cyano groups, constructs multi-charge transfer channels and significantly enhances the piezoelectric polarization field, which dramatically promotes the directional separation and migration of photogenerated charge carriers. More importantly, the Ca 2+ sites and adjacent N-cyano groups form synergistic Frustrated Lewis pairs, which simultaneously facilitate spontaneous ethanol dissociation to supply protons and strongly adsorb and activate O 2 molecules. Consequently, the optimized catalyst shows an exceptional piezo-photocatalytic H 2 O 2 production rate of 24.95 mmol g −1 h −1 under visible light and ultrasound, significantly outperforming most reported analogues. Furthermore, we fabricated shape-tunable hydrogels by integrating the catalyst with Sil-MA, which not only facilitates catalyst recovery but also creates a beneficial gas-solid interface when coated on floating substrates. The floating hydrogel system maintains stable H 2 O 2 production, demonstrating great potential for practical applications. This work provides valuable insights into designing efficient piezo-photocatalytic systems for sustainable chemical synthesis.
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DOI
高影响因子
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