ATMOSPHERIC ENVIRONMENT
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2022
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IF 5.755
Wangjin Yang,Di You,Xiangli Nan,Ning Tang,Tao Du,Chong Han
The effects of aromatic carbonyls (ACs), polycyclic aromatic hydrocarbons (PAHs) and phenols (PHs) on the photolysis of nitroaromatic compounds (ArNO 2 ) in the solid phase were explored. The reactive nitrogen gas formation by the photolysis process was investigated in a cylindrical reactor coupled to a NO x analyzer. These organics had an enhanced or inhibited influence on the nitrous acid (HONO) and NO formations by the photolysis of 1-nitropyrene (NPy) and 5-nitrosalicylic acid (NSA), depending on the hydrogen abstraction and donation abilities of organics. Based on the high-performance liquid chromatography (HPLC) results, methyl-2-benzoylbenzoate (MBB), fluoranthene (FLA) and syringaldehyde (SG) showed a promoted effect on the photodegradation of NPy and NSA, as shown by an increase in the photolysis frequency of ArNO 2 ( J ArNO 2 ) by a factor of 1.19–2.76. Based on experimental results, the HONO source strength by the photolysis of ArNO 2 in organic aerosols was estimated to be lower than 1 ppt h −1 .
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高影响因子
Journal of Environmental Sciences
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2015
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IF 2.002
Lei Chen,Zhichun Si,Xiaodong Wu,Duan Weng,Zhenwei Wu
A MnO x –NbO x –CeO 2 catalyst for low temperature selective catalytic reduction (SCR) of NO x with NH 3 was prepared by a sol–gel method, and characterized by NH 3 –NO/NO 2 SCR catalytic activity , NO/NH 3 oxidation activity, NO x /NH 3 TPD , XRD , BET, H 2 -TPR and in-situ Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS). The results indicate that the MnO x –NbO x –CeO 2 catalyst shows excellent low temperature NH 3 -SCR activity in the temperature range of 150–300°C. Water vapor inhibits the low temperature activity of the catalyst in standard SCR due to the inhibition of NO x adsorption. As the NO 2 content increases in the feed, water vapor does not affect the activity in NO 2 SCR. Meanwhile, water vapor significantly enhances the N 2 selectivity of the fresh and the aged catalysts due to its inhibition of the decomposition of NH 4 NO 3 into N 2 O.
研究领域:
环境催化
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大气污染控制
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材料化学
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表面科学
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化学工程
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高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2022
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IF 14.224
Youzhou He,Yuwei Tan,Mengyu Song,Qingli Tu,Min Fu,Liangjun Long,Jie Wu,Mengmeng Xu,Xingyan Liu
Photocatalysis technology has been widely adopted to abate typical air pollutants. Nevertheless, developing photocatalysts aimed at improving photocatalytic efficiency is a challenge. Herein, the linker-defect NH 2 -MIL-125(Ti) photocatalyst was synthesized through a convenient one-step heating-stirring method (just adjusting multiple temperatures) to firstly realize efficient photocatalytic performances of NO removal and hydrogen evolution . The optimal sample (named 65-NMIL) with a linker-defect content of 32.08% exhibited a NO removal ratio of 65.49%, which was 37.57% higher than that of pristine NH 2 -MIL-125(Ti), and displayed better H 2 -production activity. Through ESR, it was confirmed that 65-NMIL can generate more •O 2 - and •OH under visible light, and the radical trapping experiment further proved that •O 2 - played a more important role in photocatalytic activity. Moreover, the photocatalytic NO oxidation process was also monitored by in situ DRIFTS , it was found that the defective samples could promote the oxidation of NO and intermediates to the final product (NO 3 - ). On the basis of the above-mentioned photocatalytic experimental results and characterization, a possible mechanism or pathway was proposed and illustrated. This work can provide a new strategy for the subsequent defect engineering for photocatalytic MOFs materials to further solve environmental and energy crises.
研究领域:
材料科学
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光催化
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环境修复
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能量转换
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纳米技术
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Haiyang Wang,Le Guo,Jiaxing Li,Chi Zhang,Yuxiang Gao,Jiaqi Ma,Jiabao Xiong,Siyu Huang,Qinfen Wu,Jingtao Wang,Yaqi Cui,Biao Dong,Nuernisha Alifu
cRGD-modified ITC NPs target αvβ3 integrin for BBB/BTB traversal in GBM. • NIR-triggered ITC NPs combine TMZ chemotherapy and phototherapy. • ITC NPs generate NO in situ to improve perfusion and modulate resistance. • NIR-II fluorescence imaging and LSCI enable GBM diagnosis and perfusion monitoring. Glioblastoma (GBM) remains one of the most lethal brain malignancies, largely due to the blood-brain barrier (BBB) and the pathologically heterogeneous blood-tumor barrier (BTB), which severely restrict drug delivery. To achieve targeted BBB/BTB traversal, we developed cRGD-modified ICG/TMZ@Lips nanoparticles (ITC NPs). The nanoplatform actively targets αvβ3 integrin overexpressed on tumor endothelial cells and GBM cells, thereby promoting receptor-mediated transport and tumor penetration. Under near-infrared (NIR) irradiation, ITC NPs trigger temozolomide (TMZ) release and photo-responsive NO-associated effects. These effects are accompanied by heat shock protein 70 (HSP70) downregulation and modulation of resistance-related pathways, which may contribute to enhanced chemosensitivity. Furthermore, we integrated near-infrared II (NIR-II) fluorescence imaging with laser speckle contrast imaging (LSCI) for real-time GBM diagnosis and perfusion monitoring. To the best of our knowledge, among existing BBB/BTB traversal strategies, this is the first study to apply cRGD peptide for specific and efficient BBB/BTB penetration in GBM therapy. This strategy directly addresses the fundamental limitations imposed by the heterogeneous and efflux-active BTB, offering a precise nanomedicine approach for improved therapeutic outcomes. Download: Download high-res image (353KB) Download: Download full-size image
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9.1
Liuqing Yang,Zhuoting Xiong,Haowen Zou,Bin Zhao,WingKei Ho,Dingze Lu
Improving the efficiency of nitric oxide (NO) removal while reducing the formation of toxic nitrogen dioxide (NO 2 ) is a challenge. Nonetheless, it remains uncertain regarding the distinct roles of carbon versus nitrogen vacancies in graphitic carbon nitride (g-C 3 N 4 ) in governing the oxidation pathway. In this study, g-C 3 N 4 enriched with carbon or nitrogen vacancies, along with the corresponding polyvinylidene fluoride (PVDF)-supported composite films, are prepared. The adsorptions and anchoring of NO and its intermediates are significantly enhanced by the carbon vacancies. Despite a high free energy barrier of the conversion from nitrite to nitrate, the strong anchoring suppresses the release of gaseous NO 2 . The formation of Nitrogen vacancies gives rise to polarization of the spin, leading to a significant negative displacement of the potential of the conduction band and increased carrier lifetime along with a considerable decrease in the barrier for the conversion of nitrite to nitrate. This mechanism leads to enhanced reaction flux that will improve deep oxidation. The incorporation of these materials into the PVDF film greatly enhances performance and provides reusability. This work elucidates the distinct mechanisms by which carbon and nitrogen vacancies regulate NO oxidation, providing a theoretical basis for designing efficient and selective air purification materials.
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高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2026
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IF 16.8
Zhaoqi Zhang,Qian Ji,Hongfei Zhang,Heng Liu,Lei Zhao,Mengna Zhang,Lu Chen,Qian Li,Shaokang Guan
Poly(TA-Arg) coating with self-supplying NO fabricated via ethanol-water system. • Poly(TA-Arg) sample possesses a low degradation rate. • HA@CS nanoparticles synthesized with optimal HA:CS ratio. • HA@CS sample promotes endothelialization via PI3K-Akt-eNOS and Nrf2 pathways. Rapid degradation and inadequate re-endothelialization hinder the clinical application of biodegradable magnesium (Mg) alloy stents, while thrombosis and bacterial colonization further compromise early implant performance. To address these challenges, a hierarchical bilayer coating, consisting of an inner poly(α-thioctic acid)-L-arginine (Poly(TA-Arg)) layer and an outer hyaluronic acid/chitosan (HA@CS) nanoparticle layer (particle size, ∼240 nm), was fabricated on a fluorinated ZE21B Mg alloy. The Poly(TA-Arg) layer supported endothelial cell (EC)-mediated endogenous nitric oxide (NO) production. It also provided strong interfacial adhesion and corrosion protection, reducing the corrosion current density to 5.60 × 10 −8 A cm −2 . The HA@CS layer exhibited antioxidant activity, prolonged clotting time, low hemolysis, and > 99% antibacterial efficacy, as determined by plate counting. The bilayer coating promoted EC proliferation while inhibiting smooth muscle cell growth. RNA sequencing suggested that the pro-endothelialization effect was associated with PI3K-Akt- endothelial nitric oxide synthase-related signaling and an Nrf2-related antioxidant response. In a rat abdominal aorta model, the coated wire was surrounded by a thin, well-organized neointima with endothelial coverage, minimal inflammation, and no evident thrombosis. No obvious histopathological abnormalities were observed in major organs, and hematological parameters remained within normal ranges. This multifunctional coating provides a potential strategy for improving the vascular compatibility of biodegradable Mg stents. Download: Download high-res image (332KB) Download: Download full-size image
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CHEMICAL ENGINEERING SCIENCE
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2026
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IF 5.1
Huiyun Xia,Zeliang Wu,Kaixuan Fan,Lifang Song,Sen Huang,Meiqi Yang
In response to the problem of nitrogen oxide pollution in tunnel environments, this study successfully prepared I - doped Bi 2 O 2 CO 3 photocatalyst I-BOC through solid-phase grinding method. The introduction of I - leads to a notable reduction in the bandgap of BOC, while also enhancing the specific surface area and pore volume, thereby facilitating the effective separation of photogenerated carriers. When exposed to visible light, I-BOC demonstrates a peak degradation efficiency of 58% for NO, and experiments involving free radical capture indicate that ·O 2 – is the primary active species, and explore the impact of the tunnel environment on the degradation efficiency of the catalyst. Additionally, epoxy resin served as the substrate for film formation, and 1H, 1H, 2H, 2H-perfluorodecyltrimethoxysilane (PFDTES) was incorporated as a low surface energy additive. A superhydrophobic photocatalytic self-cleaning coating (FBIE) characterized by a micro-nano rough structure was created using a one-step spraying technique. This coating showcases outstanding superhydrophobic properties and water contact angle exceeding 150°, along with excellent mechanical durability and chemical stability, achieving a visible light degradation efficiency of up to 65% for NO, and outstanding physical and chemical self-cleaning ability. By exploring the catalytic effects of I-BOC and FBIE coatings under different humidity conditions, the synergistic mechanism of coating photocatalysis and self-cleaning is revealed, providing broad application prospects for coatings in tunnel air purification.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
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IF 9.6
Chaowei Liang,Guihua Luo,Xiangyu Meng,Zhijie Wang,Wenxin Dai,Xianzhi Fu
Photocatalytic NO oxidation to nitrate (NO 3 − ) is a promising technology for air pollution control. However, these strategies are hindered by slow kinetics as well as unwanted production of toxic NO 2 , which result from the inefficiency in separating charges and poor activation of the reactant molecules. Here, we report on a novel 2D/2D S-scheme heterojunction constructed by coupling CoAl-layered double hydroxide (CoAl-LDH) nanosheets with BiOBr nanoplates. This particular structure enables a S-scheme charge transfer channel that can improve the separation efficiency of photoinduced charge carrier while keeping strong redox ability to generate high-reactive oxygen species (ROS, including hydroxyl radical and superoxide radicals). Furthermore, in situ DRIFTS spectra showed that Co 3+ sites within the LDH framework are key active centers, significantly enhancing NO adsorption and activation. Consequently, the obtained CoAl-LDH/BiOBr composite exhibited excellent NO removal activity, to reach a conversion rate of 97.3% with negligible NO 2 formation (selectivity <3%) under visible light, and maintained excellent stability for 8 h. This study proposes a synergistic strategy of interfacial charge control coupled with surface catalytic site design, providing new perspectives in design of high-performance catalysts for future applications in environmental protection via photo-catalytic processes.
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高影响因子
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY C-TOXICOLOGY & PHARMACOLOGY
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2026
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IF 4.4
Tong Zhou,Ya Li,Xiaolong Lian,Jingjing An,Linyan Deng,Meng Xia,Yufeng Gong,Ningbo Geng,Qiliang Chen
Life-cycle exposure to environmentally relevant DPhP did not cause overt reproductive impairment in zebrafish. • DPhP exposure increased female GSI and mature oocyte count but did not affect sex hormone levels. • DPhP exposure downregulated fshβ in female brain while other HPG axis genes showed no significant changes. • Parental DPhP exposure had no significant transgenerational effects on F₁ offspring. Diphenyl phosphate (DPhP) is widely detected in environmental matrices, yet its reproductive toxicity following chronic exposure remains poorly understood. This study investigated the reproductive toxicity of life-cycle exposure to environmentally relevant concentrations of DPhP in zebrafish. Embryos (2 h post-fertilization) were exposed to DPhP at measured concentrations of 0.8, 3.9, or 35.6 μg/L for 120 days, covering the entire life cycle from embryo to adult. Reproductive endpoints assessed in adults included gonadosomatic index (GSI), gonad histopathology, reproductive performance, sex steroid hormone levels, expression of key genes along the hypothalamic-pituitary-gonadal (HPG) axis, and F₁ generation development. Exposure to 3.9 or 35.6 μg/L DPhP significantly increased GSI in females but not in males. Although no overt histopathological changes were detected in the gonads, females exposed to 35.6 μg/L DPhP showed a significant increase in the number of mature oocytes in the ovaries. Cumulative egg production over 21 days showed an increasing trend that did not reach statistical significance. In females, DPhP exposure significantly downregulated fshβ expression in the brain. However, at all tested concentrations, no significant changes were observed in other HPG axis-related genes or in plasma sex steroid hormone levels in either sex. Furthermore, no significant effects were found on hatching rate, survival rate, heart rate, or body length of F₁ offspring. Collectively, life-cycle exposure to DPhP within the tested concentration range exerts limited effects on the reproductive endocrine system of zebrafish and does not induce overt reproductive impairment. Download: Download high-res image (160KB) Download: Download full-size image
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高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2026
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IF 8.8
Xiangsen Xu,Qin Huang,Yajing Wu,Yiqing Zeng,Feng Zhang,Zhaoxiang Zhong,Weihong Xing
For catalytic membranes, the loading of catalysts provides the membrane substrate with novel catalytic functionality, while simultaneously inducing membrane surface reconstruction. However, the effect of such surface reconstruction on performance remains unclear. Herein, VCeTi/SiC catalytic membranes with distinct surface structures were fabricated by three distinct preparation routes. Their NH 3 -SCR activity, gas permeance, and separation performance were systematically evaluated. For both VCeTi/SiC-A and VCeTi/SiC–B, the multi-step impregnation and catalyst blockage led to significantly reduced pore sizes (7.6 μm and 5.4 μm) and poor pore size distributions. In contrast, the VCeTi/SiC–C catalytic membrane prepared by single-step solution impregnation method exhibited an optimal catalyst distribution while largely maintaining a concentrated pore size distribution almost identical to the original catalytic membrane. Benefiting from the more uniform gas flow within the carrier owing to its concentrated pore size distribution, it exhibited the widest operating temperature window for NH 3 -SCR with >90% NO conversion from 300 to 450 °C. Meanwhile, VCeTi/SiC–C also displayed the improved pore size (8.0 μm), the highest gas permeance (380 m 3 m −2 h −1 ·kPa −1 ) and the lowest filtration resistance. Furthermore, we discovered "defect-compensating effect" of dust in combined removal experiment, where dust particulates contribute to enhanced denitration performance. This work provides critical insights into the surface design of high-performance catalytic membranes for medium-high temperature gas purification applications.
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高影响因子
Journal of Materials Chemistry C
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2025
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IF 5.1
Runji Yang,Weiqing Guo,Qingxi Jin,Yaohua Xu,Feng Wei,Jiliang Zhang
Sensitive, selective and low-cost sensors for nitric oxide (NO) detection are significant due to its toxicity. This report investigates the tunable sensing behavior in chemiresistive NO sensors using α-Fe2O3 nanoparticles as sensing materials. The sensor exhibits a distinctive sensing characteristic with a reversible transition from p- to n-type sensing behavior, which is regulated by working temperature. The temperature-modulated (200–400 °C) and concentration-dependent (100–1000 ppm) p–n transition diagrams are constructed, while the gas sensing behaviors can be well described using a two-isotherm model based on Langmuir adsorption theory. Detailed reactions between NO and α-Fe2O3 at each temperature are proposed, and the corresponding activation energy is calculated. It is demonstrated that the p–n transition mechanism during NO detection is modulated by the dynamic variations in the α-Fe2O3–NO interaction. The p–n transition observed as a specific behavior in NO gas sensing can provide a novel approach to enhance the recognition capability for NO gas.
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高影响因子
Journal of Environmental Sciences
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2026
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IF 6.5
Su Jiang,Jun Tang,Pengling Zhang,Lingkui Zhao,Junfeng Zhang,Yan Huang
NH 3 rapidly attenuates photo-assistance efficiency in co-removal of NO and toluene. • NO 2 formation/consumption is rate determining step of photothermal SCR reaction. • Dispersed V 5+ =O sites oxidize both NH 3 , NO and toluene under illumination. • NH 3 -derived radicals attack aromatic rings, inducing phenolic buildup on active sites. • Without mitigating photo-assisted effect attenuation, photothermal deployment increases burdens. V 2 O 5 /TiO 2 -mediated photothermal co-removal of NO and VOCs from incineration flue gas represents a promising energy and emission saving strategy. It is crucial to elucidate the effect of V 2 O 5 loading and to clarify the interaction among reactants during the photothermal catalytic process. Herein, this study elucidates the V 2 O 5 loading effect and provides mechanistic insight into reactant interactions over V 2 O 5 /TiO 2 during photothermal co-removal of NO and toluene. Optimal V 2 O 5 loading increases dispersed V 5+ =O redox and V 5+ –OH adsorption activation sites, while Ti-O-V interfacial motifs modulate the local electronic structure to promote interfacial charge transfer and charge separation. Under photothermal conditions, V 5+ =O sites simultaneously mediate the oxidation of NH 3 and NO, where the formation and consumption of NO 2 serves as the rate-determining step, leading to ineffective accumulation of photogenerated NH 4 + species. In the absence of NH 3 , photogenerated charge carriers promote the initial dehydrogenation of toluene via side-chain activation on V 5+ -OH sites, followed by deep ring-opening degradation mediated by V 5+ =O species. NO reduces the overall toluene conversion but enhances the reaction selectivity toward deep oxidation. When NH 3 and toluene co-exist, radicals derived from NH 3 directly attack the aromatic ring, thereby changing the side-chain oxidation pathway, triggering the formation of strongly adsorbed phenolic intermediates that block catalytic sites. NH 3 does not merely compete with toluene for V-OH adsorption sites, its presence also redirects the toluene oxidation pathway and locks the reaction into a thermally driven regime. This work provides insights into the V 2 O 5 -loading effects and the interaction of reactants in multipollutant photothermal catalysis. Download: Download high-res image (337KB) Download: Download full-size image
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