WASTE MANAGEMENT
·
2024
·
IF 7.1
Fanbin Zhang,Tinghui Li,Zilong Zhang,Xia Qin,Cuicui Xu
The active graphite felt (GF) catalytic layer was effectively synthesized through a wet ultrasonic impregnation-calcination method, modified with CB and PTFE, and implemented in a pioneering side-aeration electrochemical in-situ H 2 O 2 reactor. The optimal mass ratio (CB: PTFE 1:4) for the modified cathode catalytic layer was determined using a single-factor method. Operating under optimum conditions of initial pH 5, 0.5 L/min air flow, and a current density of 9 mA/cm 2 , the system achieved a remarkable maximum H 2 O 2 accumulation of 560 mg/L, with the H 2 O 2 production capacity consistently exceeding 95 % over 6 usage cycles. The refined mesoporous structure and improved three-phase interface notably amplified oxygen transfer, utilization, and H 2 O 2 yield. Side aeration led to an oxygen concentration near the cathode reaching 20 mg/L, representing a five-fold increase compared to the 3.95 mg/L achieved with conventional bottom aeration. In the final application, the reaction system exhibited efficacy in the degradation of landfill leachate concentrate. After a 60-minute reaction, complete removal of chroma was attained, and the TOC degradation rate surpassed 60 %, marking a sixfold improvement over the conventional system. These results underscore the substantial potential of the system in H 2 O 2 synthesis and environmental remediation.
研究领域:
环境科学
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电化学工程
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产品关联
DOI
PubMed
高影响因子
Separations
·
2025
·Vol. 12
·期 10
·277
·
IF 2.7
Hang Yu,Kexin Tang,Jingqi Li,Linxi Dong,Zuo Tong How,Dongming Wu,Rui Qin
Biologically treated swine farm wastewater still contains high levels of refractory organics, humic substances and antibiotic residues, posing environmental risks and limiting opportunities for water reuse. Wastewater treatment by ozonation alone suffers from low mass transfer efficiency and selective oxidation. To overcome these limitations, a catalytic ozonation process (O3/Fe2+/H2O2) was applied and optimized using Response Surface Methodology (RSM) based on single-factor experiments and Central Composite Design (CCD) for advanced swine farm wastewater treatment. The optimal conditions ([O3] = 25.0 mg/L, [Fe2+] = 25.9 mg/L, [H2O2] = 41.1 mg/L) achieved a COD removal of 44.3%, which was 86.8% higher than that of ozonation alone, and increased TOC removal to 29.5%, indicating effective mineralization. Biodegradability (BOD5/COD) of swine farm wastewater effluent increased from 0.01 to 0.34 after the catalytic ozonation treatment. Humic-like and fulvic-like substances were removed by 93.7% and 95.4%, respectively, and antibiotic degradation was significantly accelerated and enhanced. The synergistic process improved ozone utilization efficiency by 33.1% and removed 53.95% of total phosphorus through Fe3+-mediated coprecipitation. These findings demonstrate that with catalytic ozone decomposition and production of hydroxyl radicals, the O3/Fe2+/H2O2system effectively integrates enhanced ozone utilization efficiency, radical synergy, and simultaneous pollutant removal, providing a cost-effective and technically feasible strategy for advanced swine farm wastewater treatment and safe reuse.
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DOI
高影响因子
ACTA PHYSICO-CHIMICA SINICA
·
2025
·
IF 13.5
Yanyan Zhao,Zhen Wu,Yong Zhang,Bicheng Zhu,Jianjun Zhang
Photocatalytic oxygen reduction reaction (ORR) offers a mild and cost-effective approach for hydrogen peroxide (H 2 O 2 ) production. However, its practical application is significantly hindered by rapid charge carrier recombination and insufficient O 2 adsorption capacity in photocatalysts. To address these limitations, we developed a strategy involving the creation of S-vacancy-rich CdIn 2 S 4 (S v –CIS) to facilitate charge separation and subsequent deposition of Au nanoparticles on its surface (Au–S v –CIS) to strengthen O 2 adsorption. The results suggest that the optimized Au–S v –CIS achieves a significantly increased H 2 O 2 production yield of 2542 μmol·h·g −1 in 10%-ethanol/water solution, which is about 12.8 and 1.7 times higher than that of pure CIS and S v –CIS. Comprehensive characterizations including photoluminescence spectra, time-resolved photoluminescence spectra, transient photocurrent response, electrochemical impedance spectra, and femtosecond transient absorption spectroscopy confirm the improved charge dynamics of Au–S v –CIS. In addition, temperature-programmed desorption of O 2 combined with density functional theory calculations conclusively demonstrates the superior O 2 adsorption capacity of Au–S v –CIS. This work provides a design strategy for efficient solar–to–chemical energy conversion through cooperative photocatalyst engineering.
研究领域:
光催化
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纳米材料
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能量转换
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环境科学
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材料科学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Hua Chai,Jun Nan,Wenxing Jin,Fangmin Wu,Bohan Liu,Yan Guo
Hydrogen peroxide (H 2 O 2 ) serves as a critical industrial chemical and potential energy carrier. Photocatalytic synthesis presents a viable alternative to the anthraquinone process, yet existing catalyst systems exhibit restricted sunlight wavelength responses and inadequate activity. In this study, zinc phthalocyanine/polymer carbon nitride (ZnPc/PCN) S-scheme heterojunction formation extends the photocatalyst's light absorption range to the near-infrared region (400–800 nm) and generates an internal electric field at the interface, facilitating photogenerated carrier separation and transfer. ZnPc/PCN exhibits an AQY of 1.11 % for H 2 O 2 production under 800 nm irradiation. The optimized ZnPc/PCN yields 1.87 mM H 2 O 2 , surpassing the original PCN and ZnPc by 1.36 and 93.5 times, respectively·H 2 O 2 production remains above 1.5 mM (80 %) after five cycles, demonstrating ZnPc/PCN stability. Detection of intermediate ·OOH suggests H 2 O 2 production via 2 e - oxygen reduction processes. This research offers novel insights for designing near-infrared absorbing photocatalysts.
研究领域:
材料科学
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光催化
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环境科学
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产品关联
DOI
高影响因子
IN VITRO CELLULAR & DEVELOPMENTAL BIOLOGY-ANIMAL
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2025
·
IF 1.7
Sun Jingchi,Zheng Zhousong
Activated microglia are considered to be closely related to brain senescence and the pathogenesis of neurodegenerative diseases. Ginkgo biloba extract (GBE) is widely used to treat cognitive impairment and Alzheimer's disease (AD). This study aims to investigate the active ingredients of GBE and the underlying molecular mechanisms. The active ingredients of GBE in AD treatment were first analyzed by network pharmacology, culminating in the identification of the key ingredient, quercetin, and its targeted protein, NQO1. GO function enriched the oxidative stress pathway, while KEGG enriched the PI3K/Akt/mTOR pathway. Quercetin binding to NQO1 was verified by molecular docking and DARTS analysis. Cytotoxicity assay revealed no significant toxicity of GBE (0–1 mg/mL) and quercetin (0–0.4 μM) over 48 h. Subsequently, we constructed the microglial injury model by H 2 O 2 -induced HMC3 and BV2 cell lines. GBE and quercetin suppressed the senescence characteristics in H 2 O 2 -induced microglia. Further investigation revealed that the expression of NQO1 was downregulated in the injury model, and treatment with GBE and quercetin facilitated the protein expression of NQO1. In addition, silencing NQO1 reduced the promoting effect of quercetin on microglia viability and phosphorylation levels of PI3K, Akt, and mTOR. At the same time, it significantly increased the levels of p53, p21, p16 and β-galactosidase (SA-β-gal). Collectively, GBE mitigated H 2 O 2 -induced microglial injury, which activated the PI3K/Akt/mTOR pathway through the quercetin/NQO1 axis. These findings highlight quercetin/NQO1 signaling as a possible therapeutic target for senescence-related neurodegeneration.
研究领域:
神经生物学
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药理学
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分子医学
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老年医学
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神经退行性疾病
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天然药物化学
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细胞信号转导
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产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Lele Wang,Weiran Wu,Wenpeng Zhang,Xinlei Ren,Xuan Liu,Wing-Kei Ho,Jie Hu,Min Zhou
Photocatalytic hydrogen peroxide (H2O2) production using resorcinol-formaldehyde (RF) resin offers a sustainable strategy, but its efficiency is limited by high exciton binding energy, suppressing free charge carriers generation. Herein, an S-scheme heterojunction composed of RF and MgIn2S4 (RF/MIS) was constructed to minimize exciton binding energy by modulating charge transfer pathways. The well-designed S-scheme charge transfer mechanism facilitates photoexcited carrier separation, strengthening redox capability driven by the interfacial electric field. In situ irradiation X-ray photoelectron spectroscopy, temperature-dependent photoluminescence, and photoelectrochemical measurements reveal that the reduced exciton binding energy leads to enhanced oxygen reduction efficiency. The optimized RF/MIS achieves significant H2O2 production rates of 892.6 μmol·L-1·h-1 under full-spectrum (320-780 nm), specifically producing 18.2 μmol·L-1·h-1 of H2O2 under 730 nm irradiation, along with superior stability in consecutive recycling tests. The two-electron reduction mechanism is evidenced by electron paramagnetic resonance spectroscopy and rotating ring-disk electrode analysis. These findings establish fundamental connections between heterointerface-trapped exciton dynamics and photocatalytic efficiency, providing new directions for designing high-performance organic semiconductors.
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DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2025
·
IF 2.5
Jia Tang,Yuanwen Hou,Yuetian Yang,Hongquan Fu,Juan Zhang,Hejun Gao,Jinming Chang,Yunwen Liao
Hydrogen peroxide (H2O2) is a crucial industrial chemical with diverse applications, ranging from disinfection and bleaching to chemical synthesis and environmental remediation. However, conventional H2O2 production methods, such as the anthraquinone oxidation process, face significant challenges, including high energy consumption, environmental concerns, and reliance on hazardous chemicals. To address these issues, there is a growing need for the development of stable, green, and efficient production technologies. Piezoelectric catalysis has emerged as a cutting-edge solution, leveraging piezoelectric materials to convert mechanical energy into chemical energy. This process facilitates the charge separation necessary for redox reactions, offering a promising pathway for the clean and sustainable production of H2O2. In this study, S-type ZnO/Ag2O heterojunctions were synthesized using a precipitation method. This heterojunction demonstrated exceptional catalytic performance, achieving an impressive H2O2 production rate of 346.9 μmol g−1 h−1, surpassing many existing catalysts. A key breakthrough of this research lies in the dual reaction pathway mechanism of H2O2 production. Unlike traditional methods that rely on a single reaction pathway, the ZnO/Ag2O catalyst enables simultaneous H2O2 generation through both the water oxidation reaction (WOR) and the oxygen reduction reaction (ORR). This dual reaction pathway approach significantly enhances the overall yield. This study not only highlights the potential of piezoelectric catalysis as a high-performance method for H2O2 synthesis but also paves the way for further advancements in clean and sustainable chemical production.
研究领域:
材料科学
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催化
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环境化学
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纳米技术
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能量转换
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Weijie Zhang,Shunshun Zhao,Yupeng Xing,Hongjie Qin,Qiling Zheng,Penghui Zhang,Shouwei Zhang,Xijin Xu
The sustainable conversion from solar energy to chemical energy is realized by using photocatalytic technology to produce hydrogen and hydrogen peroxide. In this work, the construction of a direct Z-scheme heterojunction is of great significance for improving the efficiency and stability of photocatalytic hydrogen evolution (PHE) and photocatalytic hydrogen peroxide production (PHP). In this study, P-doped h-BN (PBN) nanosheets are used to support the in-situ growth of ZnIn 2 S 4 nanoflowers via wet chemical method, and sandwich-like PBN/ZnIn 2 S 4 hierarchical heterostructures are successfully synthesized. The PHE performance of PBN/ZnIn 2 S 4 (∼59.46 μmol/h) is ∼ 2.35 times than that of the original ZnIn 2 S 4 (∼25.27 μmol/h), and the PHP performance (∼122.82 μmol/L/h) is 39.37 times than that of PBN (∼3.12 μmol/L/h). The excellent photocatalytic performance of PBN/ZnIn 2 S 4 can be attributed to the following points: (1) the acceleration of the separation of photogenerated electron-hole pairs induced by the formation of Z-scheme heterostructure; (2) reasonable design and construction of sandwich-like PBN/ZnIn 2 S 4 hierarchical heterostructure; (3) the promotion the migration and separation of photogenerated carriers by the built-in electric field. This work provides new ideas for the development of high-efficiency PHE and PHP Z-scheme heterojunction photocatalyst design.
研究领域:
材料科学
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能源化学
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DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2021
·Vol. 32
·期 15
·2111125
·
IF 18.808
Binyao Liu,Jinyan Du,Gaili Ke,Bi Jia,Yujie Huang,Huichao He,Yong Zhou,Zhigang Zou
g -C 3 N 4 photocatalysis is a safe and green approach for H 2 O 2 production, but the activity of pristine g -C 3 N 4 photocatalysts is unsatisfactory. At present, most of the modifications on g -C 3 N 4 photocatalysts for H 2 O 2 production have focused on thermodynamic processes, few have considered the kinetic aspects. Herein, the surface N -hydroxymethylation of g -C 3 N 4 photocatalysts for the efficient kinetic production of H 2 O 2 is reported. Through the reaction of formaldehyde with the amino moieties (–NH 2 ) on the g -C 3 N 4 surface, N -hydroxymethyls groups (-NH-CH 2 -OH) are introduced on typical g -C 3 N 4 photocatalysts. Relative to the pristine g -C 3 N 4 photocatalysts, the modified g -C 3 N 4 photocatalysts have over 1280% higher activity for H 2 O 2 production in pure water system, and impressive solar-to-chemical conversion efficiency. The experimental investigations and theoretical calculations reveal that the introduction of -NH-CH 2 -OH on the g -C 3 N 4 photocatalysts does not change their morphology, light absorption intensity and edges, band positions, charge separation and transfer properties, but markedly improved the H 2 O dehydrogenation and O 2 adsorption properties of g -C 3 N 4 . As a result, the reduction kinetics of O 2 to H 2 O 2 on the g -C 3 N 4 photocatalysts with -NH-CH 2 -OH is more energetically favorable. This work provides a useful reference and inspiration to achieve the effective modification of g -C 3 N 4 or other metal-free photocatalysts from the kinetic perspective.
研究领域:
光催化
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材料科学
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化学动力学
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可再生能源
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环境化学
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Yingnan Zhu,Jiahang Si,Tiantian Xu,Lan Zheng,Xinyu Xiao,Xiaohan Sun,He Ding,Yuze Dong
Chemodynamic therapy (CDT) and photodynamic therapy (PDT) have emerged as promising strategies for treating skin abscesses. However, their therapeutic efficacy is fundamentally constrained by the hypoxic and hydrogen peroxide-deficient microenvironment characteristic of abscesses. Herein, we developed a near-infrared (NIR) light-responsive nanoplatform (ICG/CuO2@PCM) by encapsulating copper peroxide (CuO2) and indocyanine green (ICG) within a phase-change material (PCM), which enables control over self-supplied H2O2/O2 release via an NIR-triggered cascade. Upon irradiation, ICG-mediated photothermal conversion elevates the temperature beyond the PCM melting threshold, triggering a burst release of CuO2 and ICG. CuO2 generates hydroxyl radicals (•OH) through a Fenton-like reaction in the acidic wound microenvironment. Additionally, CuO2 can thermally decompose under photothermal conditions to produce a sustained oxygen supply, which ICG immediately converts into singlet oxygen (1O2), thereby enhancing PDT efficiency. Furthermore, photothermal therapy not only enhances the efficiency of CDT but also provides additional antibacterial support. Remarkably, ICG/CuO2@PCM (NPs), coupled with irradiation, accelerate abscess wound recovery by dispersing biofilm, killing bacteria, and promoting macrophage polarization toward an anti-inflammatory phenotype. Overall, this NIR-responsive nanoplatform highlights the promise in controlled modulation of microenvironment-adaptive antimicrobial strategies to overcome current limitations of hypoxic infections.
研究领域:
生物医学工程
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纳米医学
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感染性疾病治疗
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抗菌治疗
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转化医学
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产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Zihao Yuan,Bing Li,Zhaoyuan Wang,Siyuan Lv,Dongdong Zhang,Huilin Hou,Weiyou Yang,Hongli Yang,Xiaoqiang Zhan
Hydrogen peroxide (H2O2) production via photocatalysis is highly desired as a sustainable alternative to energy-intensive industrial applications, which fundamentally relies on the exploration of efficient photocatalysts. This work reports the frustrated Lewis pairs (FLP)-cyano dual-mediated ternary crystalline carbon nitride homojunction (UMTCN) photocatalysts, which are synthesized via alkali metal salt-assisted calcination. It is verified that the doped K⁺/Na⁺ form frustrated Lewis pairs (FLPs) with sp²-hybridized nitrogen atoms accelerate the isopropanol adsorption and deprotonation for proton supply. Meanwhile, the assembled ternary homojunction establishes a triple type-II carrier migration pathway with staggered band alignment, thus enhancing the spatial charge separation efficiency with superior visible-light-driven photocatalytic H2O2 production performance. Moreover, the abundant –C≡N groups provide more active sites for the adsorption and activation of O2, accelerating the surface reaction kinetics. The “three birds one stone” strategy awarded UMTCN photocatalysts deliver an outstanding H2O2 production rate of 12.3 mmol g-1 h-1 under visible light (λ > 420 nm) with 90.3% selectivity for the two-electron oxygen reduction reaction, surpassing most reported carbon nitride-based analogues. This study underscores the synergistic mechanism of FLPs, –C≡N, and BIEF for boosted photocatalytic behaviors, offering a new avenue for efficient CN-based photocatalysts toward solar-driven H2O2 synthesis.
研究领域:
光催化
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材料化学
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能源化学
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纳米催化
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环境科学
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半导体物理
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太阳能转化
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产品关联
DOI
高影响因子
ACS Catalysis
·
2025
·
IF 13.1
Tianyi Huang,Ke Liang,Danyang Zhao,Zhiyuan Yu,Zhiqiang Zhao,Shafqat Ullah,Jiajia Wu,Yong Chen,Shuliang Lu,Jun Huang,Sibudjing Kawi,Qiangqiang Xue,Yujun Wang,Guangsheng Luo
Low-temperature and highly selective hydrogenation of 2-ethylanthraquinone (EAQ) is still challenging, owing to the high energy barrier for hydrogen dissociation and the lack of multifunctional active sites. Herein, alumina supports with specific crystal planes were synthesized via the modified sol–gel approach using octanol as the crystal growth directing agent. The layered γ-alumina support characterized (100) crystal planes materialized atomic dispersion of palladium species (Pd dispersion 66.3%), comprising Pd single atoms and subnanometer clusters. The dual-site catalyst with a low Pd loading (0.1%) achieved a H2O2 space-time yield of 1273.7 g·H2O2/g·Pd/h and selectivity of 99.4% at room temperature (25 °C) in a fluidized reactor. Moreover, the apparent activation energy for EAQ hydrogenation of the dual-site structure is significantly lower than those of the single-site structures. Systematically, in situ spectroscopic techniques confirmed that Pd single atoms enabled effective hydrogen adsorption and dissociation and the effective anchoring subnanometer Pd clusters endowed moderate adsorption intensity of intermediates and inhibited overhydrogenation. We posit that these results provide guidance for the design and synthesis of supported metal catalyst featuring synergistic single atom and subnanometer cluster active sites for practically selective hydrogenation processes.
研究领域:
催化化学
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材料化学
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纳米催化
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绿色化学
·
能源化学
·
工业催化
·
表面科学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）