JOURNAL OF ENVIRONMENTAL ENGINEERING
·
2019
·Vol. 145
·期 12
·04019083
·
IF 1.657
Yuechao Zhang,Dian Yang,Ping Ning,Yingjie Li,Senlin Tian,Junjie Gu
The aim of this work was to study the supercritical water (SCW) regeneration of phenol-saturated activated carbon (AC) with the H2O2 and alkali metal catalyst (Na2CO3, NaOH, K2CO3, and KOH) addition. The results showed that SCW could effectively regenerate AC in the 385–425°C range without any additives, but large and small amounts of phenol and dibenzofuran were present in the liquid phase, respectively, which would result in secondary pollution. The H2O2 addition enhanced the decomposition of phenol and increased the CO2 yield. With the addition of H2O2 and an alkali metal catalyst, SCW further decreased the phenol and dibenzofuran yields but increased the H2 and CO2 yields. Active component-supported (Cu-Ce-O, Fe-Ce-O, Ni-Zn-Pt, and Ni-Co-Pt) AC adsorbents might have decomposed some of the phenol during the phenol adsorption process, which resulted in relatively small amounts of phenol adsorbed on the AC and a decrease of the liquid (phenol and dibenzofuran) and gaseous (H2 and CO2) yields. SCW regeneration increased the surface area and pore volume of the AC and raised the adsorption capacity. The H2O2 and alkali metal catalyst addition can be used to achieve the rapid, efficient, and harmless regeneration of AC in SCW at a lower temperature (385°C).
研究领域:
环境工程
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化学工程
·
材料科学
·
污染控制
·
绿色化学
✓ 已验证
DOI
高影响因子
FOOD CHEMISTRY
·
2026
·
IF 10.4
Wenhui Zeng,Xuekun Pan,Shuncai Li,Yongliang Zhuang,Hui Xu,Hongyu Pan,Shuquan Huang
Hydrogen peroxide (H 2 O 2 ), a common food disinfectant, poses health threats through residual contamination, necessitating a sensitive detection method. In this work, a molybdenum sulfide (MoS x ) film was in situ grown on carbon cloth (CC) via electrodeposition, followed by a post-annealing treatment to convert it into MoS 2 (MoS 2 /CC). The fabricated non-enzymatic H 2 O 2 electrochemical sensor demonstrated a wide linear range (1 μM–20 mM) with a detection limit of 1.1 μM. Additionally, the sensor was applied to detect H 2 O 2 in food samples, achieving recoveries of 98.02%–111.85% and RSD < 7.09%. Mechanistic investigation with computational methods revealed that the high activity of MoS 2 arises from the presence of active sites on its surface that interact with H 2 O 2 in a moderately to strongly favorable manner. This study theoretically elucidates the structure-activity relationship between the surface characteristics of MoS 2 and its adsorption behavior toward H 2 O 2 , offering a solid theoretical framework for the optimization of MoS 2 -based sensors.
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 5.1
Yu Su,Shijin Liu,Jiabao Li,Shaoguang Sun,Xin Zhou,Hui Zhao,Xiaobo Chen,Xiang Feng,Xingong Zhang,Chaohe Yang,Hao Yan
The selective oxidation of fatty alcohol to fatty acid serves a green pathway for synthesis of fine chemical raw materials, while sluggish H 2 O 2 decomposition into reactive hydroxyl radical ( OH) greatly limits the improvement of oxidation activity. Herein, we successfully constructed a tunable Au-TiO 2 interface to promote H 2 O 2 decomposition for enhanced oxidation of fatty alcohols to acids. By regulating the particle size of TiO 2 supports, different coverage states of TiO 2 layer on Au particles are obtained in the Au/TiO 2 catalyst. Specifically, Au/TiO 2 with partial coverage exhibits electronic reconstructed Au δ− -O V -Ti structure, where the Au δ− facilitates the H 2 O 2 barrierless decomposition into OH and O V -Ti synergistically promotes the adsorption and activation of fatty alcohol. Optimized Au/TiO 2 catalyst shows a record high 69.7% 2-Ethyl-1-hexanol conversion and 75.6% 2-Ethylhexanoic acid selectivity, suppressing reported catalysts in 2-Ethyl-1-hexanol oxidation. This work supplies guidance for the design of highly efficient supported catalysts with superior H 2 O 2 utilization ability.
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
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
·
材料化学
·
催化化学
·
水处理技术
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
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
·
传感器与传感技术
·
计算化学
·
环境功能材料
·
纳米材料
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Suhong Lu,Chengyu Xu,Shuo Wang,Yewei Chen,Zhongtao Jiang,Xinru Chen,Jurong Liu,Yuzhen Fang,Guilong Liu
Engineering oxygen vacancies in α-MnO 2 represents an effective strategy for generating active oxygen species to enhance catalytic performance in HCHO oxidation. In this study, rod-like α-MnO 2 was synthesized via an in situ redox reaction between potassium permanganate (KMnO 4 ) and methanol, followed by modulation of surface oxygen vacancies through the adjustment of H 2 O 2 etching time. Etching duration critically governed catalytic enhancement, with α-MnO 2 -E-2 (2 h etching) exhibiting exceptional activity, robust stability and complete HCHO conversion at 60 °C. Characterization revealed oxygen vacancies on the catalyst surface could be effectively regulated by modifying the H 2 O 2 etching time. Significantly, α-MnO 2 -E-2 demonstrated the highest (Mn 2+ + Mn 3+ )/Mn total ratio and lowest average oxidation state (AOS), directly correlating with maximized oxygen vacancy formation. The introduction of oxygen vacancies facilitated superior oxygen mobility and activation, thereby accelerating HCHO oxidation. In situ DRIFTS analysis further confirmed that only formate species were observed as intermediates on α-MnO 2 -E-2, demonstrating that H 2 O 2 etching simplified the reaction pathway to HCHO → HCOO − → H 2 O + CO 2 .
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产品关联
DOI
高影响因子
ANALYST
·
2019
·Vol. 144
·期 8
·2716-2724
·
IF 4.019
Zunfu Hu,Yongheng Yin,Qingyun Liu,Xiuwen Zheng
The rapid and sensitive detection of H2O2 is of great importance for a series of industries. In this work, surface-modified FePt nanoparticles were loaded into metal–organic frameworks (MOFs, MIL-101(Fe)) in a facile in situ way and the resulting material (FePt@MOFs NCs) acted as a high efficient colorimetric detection agent. The as-prepared FePt@MOFs NCs possess a well-defined octahedron shape and high stability in water. Via the oxidation reaction of the chromogenic substrate 4,4′-bi-2,6-xylidine, the obtained FePt@MOFs NCs were proved to possess prominent peroxidase-mimic activity. Under the most favorable conditions, the linear range for H2O2 detection was 40 μM to 800 μM and the detection limit was 18.9 μM. Furthermore, FePt@MOFs NCs were successfully applied to the detection of H2O2 in real samples such as fruit juice. The developed colorimetric sensing platform is expected to have potential for the exact detection of H2O2 for the food, mining and bio-pharmaceutical industries, due to its high stability, sensitivity, rapidness and easy preparation.
研究领域:
分析化学
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纳米生物技术
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食品分析
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环境监测
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生物传感
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材料科学
·
分子诊断
✓ 已验证
DOI
高影响因子
SURFACE REVIEW AND LETTERS
·
2016
·
IF 0.435
YUHUA YAN,ZHONGHUI ZHANG,MINGSHU XIAO,HUALAN ZHOU
A method was developed to conveniently and rapidly determine hydrogen peroxide (H 2 O 2 ) in food. The glassy carbon electrode (GCE) modified with agmatine sulfate (AS) easily anchoring nickel ion was attached to AS with polyamine structure. As a result, more Ni 2 + was obtained and transformed to Ni(OH) 2 /NiOOH on the AS–GCE, which caused the electrode to own much better electrocatalytic performance on H 2 O 2 . Based on these, the content of H 2 O 2 in thin sheet of bean curd sample was detected with standard addition method, by which good results were obtained.
研究领域:
分析化学
·
食品科学
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2022
·
IF 9.794
Wenbo Sui,Wangzu Li,Zhongshuo Zhang,Weixing Wu,Zhanyou Xu,Ying Wang
Electrochemical synthesis of hydrogen peroxide (H 2 O 2 ) through 2-electron oxygen reduction reaction (ORR) is a sustainable alternative to the industrialized anthraquinone oxidation process . Gas-diffusion electrode (GDE) is employed to overcome the mass transport limitation of O 2 to deliver high current density . However, long-term stability in practical electrolyzer with GDE is still challenging due to electrode flooding. Here, we propose a double catalyst layer (CL) strategy with gradient Nafion distribution to balance the mass transport of O 2 and H + and improve the flood-proof ability. Our design achieved H 2 O 2 production rate up to 2.16 mmol h −1 cm −2 with a selectivity of about 90% and enabled 48 h stable electrolysis at 100 mA cm −2 . Compared to the state-of-the-art H 2 O 2 electrosynthesis system in acidic media, the full-cell voltage improved significantly to 2.3 V at 100 mA cm −2 , indicating its potential for practical production and utilization.
研究领域:
化学工程
·
材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2017
·
IF 3.648
Dun Fu,Yujia Huang,Xueting Zhang,Tonni Agustiono Kurniawan,Tong Ouyang
This study investigates the impacts of hydrogen peroxide (H 2 O 2 ) addition on the removal of tetracycline (TC) from aqueous solution by TiO 2 (B) nanosheets (NSs) and compares the changes of its characteristics due to adsorption treatment. The morphology and textural properties of the TiO 2 (B) NSs structure before and after the treatment were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR). Effects of pertinent parameters such as dose of TiO 2 (B) and/or H 2 O 2 concentration, initial adsorbate concentration, pH, and temperature on the TC adsorption by TiO 2 (B) NSs were examined. The adsorption mechanisms of TC by the integrated treatment of TiO 2 (B) NSs and H 2 O 2 are also presented. The results demonstrated that the integrated treatment of TiO 2 (B)-H 2 O 2 system had significantly improved the TC removal by 250% (with its adsorption capacity ( q max ) of 212.77 mg g − 1 ), as compared to that of the TiO 2 -H 2 O 2 system (paired t-test ; p ≤ 0.05) under the same optimum conditions (2 g L − 1 of TiO 2 (B) NSs; 20 mM of H 2 O 2 ; 0.1 g L − 1 of initial TC concentration). The enhanced TC adsorption by the integrated TiO 2 (B)-H 2 O 2 system not only is due to the H-bonding between the TC molecules and the –OOH groups formed on TiO 2 (B) surface, but it is also because of electrostatic interactions. Their adsorption isotherms followed the Elovich model and were also applicable to both the Langmuir and the Freundlich models. In spite of the adsorbent's promising performance, its treated effluents still could not meet the required TC effluent limit of < 62.5 μg L − 1 . This suggests that further subsequent treatment like biological processes is still necessary to completely remove the target pollutant from the wastewater samples.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
ChemElectroChem
·
2018
·Vol. 5
·期 5
·737-742
·
IF 4.446
Jinli Wang,Jian Pei,Ke Hua,Dahong Chen,Yang Jiao,Yongyuan Hu,Gang Chen
Graphical Scratch the surface : Co 2 V 2 O 7 hollow cylinders were prepared from hexagonal prisms using hydrogen peroxide as an etching agent and Co(NH 2 ) 2 as the release rate controlling agent. The material exhibits enhanced lithium storage properties. The construction of hollow structures has been used as an efficient strategy to improve electrochemical properties in lithium-ion batteries (LIBs). In this paper, novel Co 2 V 2 O 7 hollow cylinders have been fabricated via a unique etching process, in which H 2 O 2 and CO(NH 2 ) 2 were selected as the etching agent and the release rate controlling agent, respectively. The formation process for the hollow structure and the etching mechanism have been investigated. Benefiting from the improved diffusion and transport of Li + , the Co 2 V 2 O 7 hollow cylinder electrode demonstrates higher electrochemical performance as an anode material for LIBs than that of Co 2 V 2 O 7 solid hexagonal prisms. Under a current density of 0.4 A g −1 , the cycling capacity can be improved to 2.5 times greater than that of non-etched hexagonal prisms.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
WATER RESEARCH
·
2021
·
IF 11.236
Lifa Ge,Yamei Yue,Wei Wang,Fatang Tan,Shenghua Zhang,Xinyun Wang,Xueliang Qiao,Po Keung Wong
Currently existing Fenton-like catalysts were limited in wastewater treatment owing to their potential transition-metal poisoning, narrow applicable pH range and high dependence on external energy excitation. In this work, the MgNCN/MgO nanocomposites were firstly synthesized by a facile one-pot calcination of melamine and basic magnesium carbonate, and used as novel H 2 O 2 activator for antibiotic removal. It was found that the MgNCN/MgO composite calcined at 550°C with the mass ratio of melamine to basic magnesium carbonate at 2:1, exhibited an excellent catalytic ability to tetracycline (TC) degradation in a wide pH range of 4-10 without any external energy input. More than 90% of TC (100 mL, 50 mg/L) could be degraded within 30 min by 10 mg of the nanocomposite in the presence of 0.2 mL of 30 wt% H 2 O 2 . Based on the experimental results, it was concluded that the Mg-N coordination between MgNCN and MgO in MgNCN/MgO nanocomposites activated H 2 O 2 to produce primary singlet oxygen ( 1 O 2 ) and minor hydroxyl radicals (·OH), responding for TC degradation. In addition, the degradation pathways of TC were deduced by determining the generated intermediates during the degradation process. This work provided a novel idea for designing transition-metal-free catalysts for nonradical activation of H 2 O 2 in the absence of external energy excitation.
研究领域:
环境科学
·
催化化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）