Nano Materials Science
·
2025
·
IF 17.9
Hongjing Liu,Shan Ren,Xiaodi Li,Liang Wang,Bofeng Bai,Shouning Chai,Peng Chen,Fan Dong
Photocatalytic oxidation of nitrogen oxides (NO x ) is a promising technology for environmental protection and green sustainable development. However, its practical application remains limited due to inefficient activation of NO and O 2 , stemming from inadequate structural design of photocatalysts. Herein, we developed a thin-layer two-dimensional (2D) material Bi 2 MoO 6 (BMO) via cetyl trimethyl ammonium chloride (CTAC) addition in synthesis process, which effectively modulates the surface electronic structure, enhance the light absorption and activation of NO and O 2 . This thin-layer Bi 2 MoO 6 nanosheets achieved a NO oxidation efficiency of 45.3 %, which was about 5.5 times that of traditional bulk BMO (8.2 %). Additionally, it demonstrated superior selectivity for NO 2 − /NO 3 − production (86.6 %) compared to bulk BMO (60.5 %) and significantly reduced the formation of toxic NO 2 byproducts (13.4 % vs. 39.5 %). Combining experimental characterizations and density functional theory (DFT) simulations, it demonstrated that the electron-hole pair separation could be promoted and targeted adsorption activation of O 2 can be enhanced to form superoxide radicals (•O 2 − ) and singlet oxygen ( 1 O 2 ) via the effect of surface charge transfer adjustment on the thin-layer structure of Bi 2 MoO 6 , which are key factors affecting the efficiency and selectivity of photocatalytic oxidation of NO. This work provides important insights into the formation of directed ROS and proposes a unique mechanism for selective NO oxidation.
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高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Linfeng Miao,Shaopeng Pang,Xuetao Wang,Mengjie Liu,Yu Huang,Jing Zhu,Zhongli Ji
Different drying methods were used to prepare catalytic membranes for the simultaneous removal of dust and NO to explore their effect on the distribution of active components, with the structural properties, filtration performance, catalytic performance, and working mechanism of the preferred prepared catalytic membrane systematically investigated. The results indicated that microwave drying, in contrast to traditional electric drying with blasting, effectively inhibited the migration of the precursor solution to achieve uniform loading of active components, thus endowing the catalytic membrane with excellent catalytic activity. Meanwhile, the pore structure of the fibrous ceramic substrate was not almost affected by the loaded catalyst and still exhibited high porosity. These characteristics contributed to the development of a catalytic membrane with good filtration and catalytic performance, as well as superior adaptable NO concentration and filtration velocity properties. Therefore, fibrous ceramic-based catalytic membranes prepared using microwave assistance offer considerable application prospects for integrated purification of high-temperature flue gases. Furthermore, the removal of dust and NO was determined to follow the Eley–Rideal reaction mechanism and surface filtration mechanism of the residual dust cake, respectively.
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ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Jiawen Wang,Jinfu Wang,Zi Wang,Jiayue Wu,Jiaxuan Liao,Shenyuan Zhan,Xiaoye Chen,Xinhao Wang,Yongbao Wei,Qidong Zhou,Liefu Ye,Jinfeng Wu
Incontinence-associated dermatitis (IAD) leads to persistent tissue damage, antibiotic-resistant infections, and neurogenic inflammation, greatly impairing patients' quality of life. Current therapies fail to simultaneously eliminate resistant bacterial biofilms, neutralize alkaline conditions, and break the cycle of ammonia (NH 3 ) regeneration. Here, a piezoelectric gas therapy strategy based on platinum-decorated bismuth molybdate load in gelatin methacrylate (GelMA) hydrogel (Pt@BMO-Gel) is introduced. Under ultrasound excitation, Pt@BMO generates high piezoelectric potential to improve charge separation, selectively adsorbs NH 3 on BMO (001) crystal facets, efficiently degrades NH 3 to normalize pH, and enables sustained release of H 2 and NO for dual antibacterial and anti-inflammatory effects. Mechanistic insights from theoretical calculations show that the Pt (111) and BMO (001) surfaces lower energy barriers for H 2 formation and N─H bond cleavage, conducive to the generation of NO and H 2 . Transcriptomic profiling reveals downregulation of key nitrogen metabolism genes (arcC/hutH) in methicillin-resistant Staphylococcus aureus (MRSA) and disruption of the (p)ppGpp-mediated stringent response, effectively eradicating bacterial persistence via metabolic reprogramming. This study establishes Pt@BMO as an efficient piezoelectric catalyst for wound therapy, presenting a novel approach in medicine that transforms harmful NH 3 into therapeutic H 2 and NO, offering a promising treatment paradigm for infected wounds, such as incontinence-associated dermatitis.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Jiaoping Si,Hongjing Liu,Wendong Zhang,Dengyu Jiao,Wangxing Ai,Yuerui Ma,Lihuan Feng,Xing’an Dong,Wenjie He,Peng Chen
The catalytic conversion of nitrogen oxides (NO x ) to non-toxic products has emerged as a critical strategy for air pollution control under stringent emission regulations. Photocatalytic NO x removal performance highly depends on the transmission of photogenerated electrons and the amount of reactive oxygen species (ROS) generated. Herein, the Bi/BiOCl/SrTiO 3 heterostructure photocatalyst was prepared by a simple in situ synthesis method to address the limitations of conventional NOx removal systems. Due to the synergistic effect of bismuth (Bi) surface plasmon resonance (SPR) and the built-in electric field in BiOCl/SrTiO 3 S-scheme heterojunction, Bi/BiOCl/SrTiO 3 showed strong light absorption ability and high charge separation efficiency, with the highest NO removal efficiency reaching 70 %. The enhanced electronic interaction between Bi and BiOCl/SrTiO 3 induced Bi-O covalent bonds with the BiOCl layer to facilitate fast charge separation, promoting the rapid transfer of interfacial photogenerated carriers, this process induces the activation of O 2 and H 2 O to form reactive oxygen species (ROS) to promote the oxidative removal of NO. This study provides new insights into the development of effective photocatalysts with fast charge separation by synergistic metal active sites and built-in electric field of heterojunction for air pollutant purification.
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高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Yifu Wang,Jinjin Li,Linlin Ding,Xiaolan Gao,Zhilan Chi,Shanshan Ma,Leiliang He,Yamin Xiong
Bacterial infection reduces quality of wound healing and even cause severe complications, but most current dressings adopt single antibacterial mode showed limited effectiveness. Herein, a plant extract quercetin (Que) composite chitosan/hyaluronic acid hydrogel (named CBCQ) with near-infrared (NIR) triggered controllable NO releasing was developed for efficient photothermal therapy/nitric oxide (PTT/NO) synergistic antibacterial and wound healing. Specifically, CBCQ hydrogel with chemical/physical crosslinked network was fabricated via host-guest interaction, metal coordination and Schiff base reaction. It exhibited porous structure, excellent injectability, self-healing, adhesion, antioxidant, and biocompatible properties suitable for wound dressings. Notably, superior PTT effect generated from Que-Fe 3+ has been demonstrated, which served as a photothermal switch for the controllable NO release, thereby enable to utilize the physiological functions of NO at different concentrations, improving antibacterial efficiency by integrating PTT and NO benefits, and further allowing sustained antibacterial through Que when NIR was off. Importantly, CBCQ hydrogel achieved better healing of skin incision than commercial 3M medical glue and Film, and significantly improved the healing rate and quality of Methicillin-resistant Staphylococcus aureus (MRSA) infected wound by efficient and sustained antibacterial activity, inhibiting inflammation, and promoting collagen deposition and angiogenesis, highlighting its promising application in skin incisions and infected full-thickness skin wounds.
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高影响因子
ACS Applied Bio Materials
·
2025
·
IF 4.7
Xueqi Liang,Yingying Cai,Zhen Liu,Nan Wang,Ahmed Mohamed Omer,Junhong Ling,Xiao−kun Ouyang
Ferroptosis, an iron-dependent form of regulated cell death characterized by lipid peroxidation and redox imbalance, has emerged as a promising strategy for treating drug-resistant cancers. However, its therapeutic efficacy is often limited by the antioxidant-rich tumor microenvironment (TME), which inhibits reactive oxygen species (ROS) accumulation. In this study, we introduced a tumor-responsive nanoplatform (MLCT) designed to synergistically amplify ferroptosis through a combination of iron catalysis, calcium overload, nitric oxide (NO) release, and photothermal stimulation. The MLCT platform consisted of mesoporous polydopamine (MPDA), calcium peroxide (CaO2), l-arginine (LA), and a tannic acid-Fe3+ (TA-Fe) shell, facilitating TME-responsive release of therapeutic agents. In vitro, MLCT effectively depleted glutathione (GSH) and sustained NO generation, resulting in elevated ROS levels and mitochondrial dysfunction. Additionally, upon near-infrared (NIR) irradiation, localized hyperthermia further potentiated ferroptotic activity. In vivo, MLCT combined with NIR treatment resulted in an 86.34% reduction in tumor growth, with minimal systemic toxicity. These results highlighted the potential of MLCT as a precision-engineered ferroptosis platform for enhanced cancer therapy.
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高影响因子
Scientific Reports
·
2015
·Vol. 5
·期 1
·1-13
·
IF 5.578
Ye Yi Quan,Jin Chong Wei,Fan Shi Kai,Mao Qian Qian,Sun Cheng Liang,Yu Yan,Lin Xian Yong
Cell wall is the major component of root apoplast which is the main reservoir for iron in roots, while nitric oxide (NO) is involved in regulating the synthesis of cell wall. However, whether such regulation could influence the reutilization of iron stored in root apoplast remains unclear. In this study, we observed that iron deficiency elevated NO level in tomato ( Solanum lycopersicum ) roots. However, application of S-nitrosoglutathione, a NO donor, significantly enhanced iron retention in root apoplast of iron-deficient plants, accompanied with a decrease of iron level in xylem sap. Consequently, S-nitrosoglutathione treatment increased iron concentration in roots, but decreased it in shoots. The opposite was true for the NO scavenging treatment with 2-(4-carboxyphenyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide (cPTIO). Interestingly, S-nitrosoglutathione treatment increased pectin methylesterase activity and decreased degree of pectin methylation in root cell wall of both iron-deficient and iron-sufficient plants, which led to an increased iron retention in pectin fraction, thus increasing the binding capacity of iron to the extracted cell wall. Altogether, these results suggested that iron-deficiency-induced elevation of NO increases iron immobilization in root apoplast by decreasing pectin methylation in cell wall.
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高影响因子
ENERGY & FUELS
·
2019
·
IF 3.021
Jialin Meng,Yufeng Duan,Peng Hu,Yifan Xu,Xinze Geng,Ting Yao,Shaojun Ren,Hongqi Wei
A series of Mn–V–W/TiO2 (Mn–VWT) catalysts were synthesized by the impregnation method and calcinated at different temperatures (300–600 °C). To explore the effects of the reaction temperature, SO2, and H2O on the simultaneous removal performance of elemental mercury (Hg0) and NO, Mn–VWT were investigated by a fixed-bed reaction system. Various techniques (scanning electron microscopy, Brunauer–Emmett–Teller, X-ray diffraction, H2-temperature-programmed reduction, NH3-temperature-programmed desorption, and X-ray photoelectron spectroscopy) were utilized to characterize the samples. The results showed that the catalytic activity of Mn–VWT first increased and then decreased with the increasing calcination temperature. The removal efficiency of Hg0 and NO still had good performance even in low reaction temperature (200 °C), achieving 100 and 82%, respectively. Mn–VWT-400 had the best simultaneous removal performance because of the highest content of the Mn4+, V4+, and chemisorbed oxygen Oα and the best reductive activity at low temperature. Furthermore, SO2 irreversibly inhibited Hg0 and NO removal ability due to the sulfate and sulfite generation on the surface of Mn–VWT-400. Especially, the inhibition effect was more serious if SO2 and H2O coexisted because the rate of sulfate/sulfite was higher than that of the former. In addition, with the increase in reaction temperature, the effect of SO2 and H2O on the removal of Hg0 and NO over Mn–VWT was gradually reduced.
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高影响因子
APPLIED SURFACE SCIENCE
·
2018
·
IF 4.439
Gangqiang Zhu,Mirabbos Hojamberdiev,Shaolin Zhang,Syed Taj Ud Din,Woochul Yang
In order to further improve its photocatalytic activity , the BiOI microspheres were activated by a synchronous coupling of Bi metal and graphene under solvothermal conditions. The effects of the synthesis temperature (160–200 °C) on crystallinity, morphology, and photocatalytic activity were studied in particular. As expected, the ternary Bi-BiOI/graphene photocatalyst synthesized at 180 °C exhibited higher photocatalytic activity for NO oxidation removal under visible light irradiation than individual BiOI, and binary Bi-BiOI and BiOI/graphene composites. The photocatalytic efficiency for the NO removal of the ternary Bi-BiOI/graphene photocatalyst synthesized at 180 °C reached 51.8% within 30 min of visible light irradiation. The enhanced photocatalytic activity of the ternary Bi-BiOI/graphene photocatalyst is attributed to (I) the efficient transfer of photo-generated electrons from BiOI and Bi to graphene, leading to the effective separation of the photo-generated electron-hole pairs and (II) the surface plasmon resonance effect of Bi nanoparticles in the composite photocatalyst. Furthermore, the results of the scavenger experiments and DMPO-ESR spin-trapping measurements reveal that O 2 − radical species play the most critical role and holes serve as a secondary active species in the oxidative removal process of NO by 180BOI/GR composite under visible light irradiation.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Huixian Zhou,Hui Zhong,Yiqing Zeng,Yutang Kang,Bin Chen,Shuanglu Ma,Yifan Li,Yu Zhang,Shasha Feng,Zhaoxiang Zhong,Weihong Xing
The strategy of constructing catalytic membrane has a significant influence on its structure and performance. In this work, Co 3 O 4 -C x @SiO 2 nanofiber membranes (NFMs) were fabricated by an in-situ growth–pyrolysis–oxidation strategy. The Co 3 O 4 -C x catalyst derived from ZIF-67 was wrapped around nanofibers, which helps to maintain a stable membrane structure, then suppressing the reduction of gas permeability. Among the Co 3 O 4 -C x catalyst, the carbon skeleton can prevent the agglomeration of Co 3 O 4 nanoparticles, obtaining an ultra-fine Co 3 O 4 nanoparticles with high dispersibility, redox property and surface area. The obtained Co 3 O 4 -C 300 @SiO 2 NFM exhibits outstanding ammonia selective catalytic reduction (NH 3 -SCR) denitrification activity (T 90 = 225 °C at a GHSV of 77,000 h −1 ). The effect of catalyst loading on PM 2.5 filtration performance of SiO 2 NFM was also tested. Co 3 O 4 -C 300 @SiO 2 NFM has higher filtration efficiency (99.99%) than SiO 2 NFM at a lower pressure drop of 58 Pa, which suggests that catalyst loading via our method can improve the filtration performance of SiO 2 NFM. This work might provide a universal strategy for the design and preparation of highly efficient catalytic membrane.
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Journal of Environmental Sciences
·
2016
·
IF 2.208
Jixing Liu,Fuhong Yu,Jian Liu,Lifeng Cui,Zhen Zhao,Yuechang Wei,Qianyao Sun
A series of meso-microporous Cu-SAPO-34 catalysts were successfully synthesized by a one-pot hydrothermal crystallization method, and these catalysts exhibited excellent NH 3 -SCR performance at low temperature. Their structure and physic chemical properties were characterized by means of X-ray diffraction patterns (XRD), Scanning electron microscopy (SEM), Transmission electron microscopy (TEM), N 2 sorption-desorption, nuclear magnetic resonance (NMR), Inductively Coupled Plasma-Atomic Emission spectrometer (ICP-AES), X-ray absorption spectroscopy (XPS), Temperature-programmed desorption of ammonia (NH 3 -TPD), Ultraviolet visible diffuse reflectance spectroscopy (UV-Vis DRS) and Temperature programmed reduction (TPR). The analysis results indicate that the high activities of Cu-SAPO-34 catalysts could be attributed to the enhancement of redox property, the formation of mesopores and the more acid sites. Furthermore, the kinetic results verify that the formation of mesopores remarkably reduces diffusion resistance and then improves the accessibility of reactants to catalytically active sites. The 1.0-Cu-SAPO-34 catalyst exhibited the high NO conversion (> 90%) among the wide activity temperature window in the range of 150–425°C.
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高影响因子
Reaction Kinetics Mechanisms and Catalysis
·
2018
·Vol. 124
·期 2
·587-601
·
IF 1.515
Wang Tao,Zhang Xinyu,Liu Jun,Liu Hanzi,Sun Baomin
NO conversion using dielectric barrier discharge (DBD) plasma with different catalysts was investigated. Cu/TiO 2 , Cu/Al 2 O 3 , Cu/ZSM-5, Cu/CNTs and Cu/AC catalysts were prepared by incipient wetness impregnation with 4 wt% Cu loaded. BET, SEM, XRD, XPS, H 2 -TPR, NH 3 -TPD were used to measure and evaluate various catalysts. Compared with the plasma only process, the combination of plasma with different catalysts significant improved the NO conversion rate. The highest NO conversion rate of 76% could be achieved with Cu/ZSM-5 catalyst at the energy density of 184 J/L. The results indicate that Cu species over the support ZSM-5 can produce high concentrations of CuO, largest specific surface area, largest amounts of acidity and lowest reduction temperature (209 °C), these factors conducive to plasma-catalyst reaction. Besides, Cu/TiO 2 and Cu/Al 2 O 3 catalysts exhibited excellent NO conversion at the low energy density because of the low thermal stability. After plasma-catalyst reaction, the reducibility of CuO and Cu 2 O over supports decreased and the peak position of acid sites shifted to lower temperature.
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