INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2024
·
IF 3.8
Jiangxiao Qiao,Jinxin Gan,Fei Gao,Xiangsen Xu,Jiesong Tan,Yiqing Zeng,Feng Zhang,Feng Han,Zhaoxiang Zhong,Weihong Xing
Synergistic removal of nitrogen oxides (NOx) and particulate matter (PM) can be achieved using multifunctional catalytic membranes. In this work, CePO4 nanorods were loaded on the pore surfaces of SiC membranes to construct the CePO4/SiC-X catalytic membranes. The stacked nanorod structure of the CePO4 catalyst layer facilitates the diffusion of gases to the catalyst surface during reactions. Owing to the high specific surface area, rich surface acidity, and strong redox capacity, the CePO4/SiC-400 catalytic membrane exhibits the best ammonia-selective catalytic reduction (NH3–SCR) denitration activity, achieving >90% NO conversion at a temperature of 250–380 °C and negligible N2O byproduct. In addition, the CePO4/SiC-400 catalytic membrane demonstrates excellent H2O and SO2 resistance. The performance of dust filtration and simultaneous dust filtration and denitration at 250–350 °C proposed that the dust rejection efficiency reached more than 99% at various conditions, and the dust filtration process did not affect the NH3–SCR performance of the CePO4/SiC-400 catalytic membrane. From the above results, the CePO4/SiC-400 catalytic membrane presents a broad application prospect in the simultaneous dust removal and denitration of high-temperature flue gas.
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DOI
高影响因子
ChemCatChem
·
2025
·
IF 3.9
Yingshan Xue,Ping Wang,Cheng Yang,Jiasai Yao,Tianbao Zhang,Xin Zhang,Jing Xiong,Xiaohua Sun,Yuechang Wei,Zhenxing Li
Nitrogen oxides are an industrial and domestic waste gas, which pollutes the air and affects health. In this paper, we use the template method to achieve the doping of alkaline earth metals, and the alkaline earth metals are doped into cerium-manganese-based three-dimensional ordered macroporous (3DOM) catalysts to detect NO oxidation. The introduction of alkaline earth metals can improve the stability and thickness of macroporous results, which increases the contact area between the catalyst and reactant gases. At the same time, alkaline earth metal doping can promote the formation of more oxygen vacancies and unsaturated structures, and improve the catalytic activity of NO oxidation. The NO conversion rate of CM-3Mg doped with 3% Mg was 61.25% at 250°C, and the NO conversion rate was the highest at 303°C, which was 79.2%. This study provides a promising catalyst candidate for NO oxidation in practical applications.
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Xiaojuan Hu,Danping Wu,Shijie Yao,Gongning Chen,Ping Li,Yang Chen,Wancheng Gong,Weijiao Fan,Xiaoyi Chen,Xiaozhou Mou,Yu Cai,Xianghong Yang
Acute kidney injury (AKI) is a prevalent critical condition in hospitalized patients with an elevated risk of death. Challenges in AKI management persist due to the absence of efficient early diagnostic modalities and the lack of effective therapeutic interventions, imposing significant burdens on medical resources for prolonged treatment. Here, we proposed a second near-infrared (NIR-II) photoacoustic imaging (PAI) guided triggered on-demand release of (nitric oxide) NO from the injury zone to monitor and treat AKI through the anti-inflammatory, anti-apoptotic, and oxidative stress-damage-reducing cell- or organ-protective effects of NO. We engineered hollow copper sulfide nanoparticles (Cu 9 S 8 NPs) loaded with platelet membrane-encapsulated NO-releasing precursors (S-Nitroso-N-acetylpenicillamine, SNAP), as a nanoplatform for early AKI diagnosis and precise spatiotemporal NO release Besides acting as a drug carrier, the inherent PAI compatible Cu 9 S 8 also enables targeted renal injury localization, exploiting the natural propensity of platelets to accumulate at vascular injury sites, facilitating real-time AKI monitoring in murine models. Experiments demonstrated that nitric oxide delivery nanoparticles can specifically target and accumulate in the kidney, reduce inflammation, and promote damage repair. Overall, this gas therapy strategy represents a new therapeutic pathway for the clinical AKI management.
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DOI
高影响因子
Journal of Materials Chemistry B
·
2024
·
IF 6.1
Wenbo Wang,Zhaoyi Cheng,Hui Xing,Shihao Zhou,Qiaozhang Ye,Guan-Hai Wang,Gaofei Xiong,Dong Ma
Nitric oxide (NO) gas molecules have demonstrated remarkable anti-tumor effects and minimal susceptibility to drug resistance, establishing as a promising modality for effective tumor treatment. However, how to realize its stable and efficient delivery in vivo is still a challenge. In this study, we have developed a heat-responsive biomimetic nano erythrocyte (M/B@R) by loading the NO donor (BNN6) onto the mesoporous Prussian blue (M-PB) and subsequently enveloping them with red blood cell membranes. The preserved integrity of the red blood cell membrane (RBCm) structure could ensure its excellent biosafety, prolong its circulation time within the bloodstream and then enhance the accumulation of BNN6 at tumor sites. When M/B@R is stimulated by near-infrared light (NIR-II, 808 nm) irradiation, the nanoparticle could generate significant heat for photothermal therapy (PTT) by the characteristic NIR absorption of M-PB and then NO also could be efficiently released. The generated NO further facilitates the formation of ONOO−, a highly toxic species to the tumor, while also alleviating tumor hypoxia. Remarkably, M/B@R, with NIR as the excitation source, induces the combined lethality through hyperthermia, DNA damage, and tumor hypoxia relief. This novel combination strategy provides a new avenue for PTT/NO-induced cancer therapy.
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产品关联
DOI
PubMed
高影响因子
Reaction Chemistry & Engineering
·
2025
·
IF 3.1
Xue Luo,Jiahui Liu,Danhui Li,Lili Zhao,Hualiang An
Cyclopentanone self-condensation to 2-cyclopentylidenecyclopentanone is one of the key steps in synthesizing high-density fuels. In this study, MgAl-LDO(NO3−) catalysts, prepared via coprecipitation, demonstrated good catalytic performance. Meanwhile, Mg2Al-LDO(NO3−) catalysts with different Mg/Al ratios were explored. Characterization by XRD, NH3-TPD and CO2-TPD revealed that Mg2Al-LDO(NO3−) possessed appropriate acid–base active sites, correlating with its enhanced catalytic performance. Under optimized reaction conditions, cyclopentanone conversion reached 85.9% with 98.8% selectivity toward 2-cyclopentylidenecyclopentanone. Furthermore, the reusability of the catalyst was investigated. XRD, SEM, and N2 adsorption–desorption analyses indicated that structural changes in the Mg2Al-LDO(NO3−) catalyst led to its deactivation. GC-MS analysis of the reaction system identified the primary by-product as 2,5-dicyclopentylidenecyclopentanone. Based on these findings, a plausible reaction network is proposed.
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DOI
高影响因子
JOURNAL OF RARE EARTHS
·
2025
·
IF 7.2
Jiaman Wang,Jing Xiong,Zekai Cui,Yuanfeng Li,Hao Guo,Guilin Liu,Yaxiao Ma,Linsheng Xu,Jinqing Jiao,Jianping Zou,Yuechang Wei
CeO 2 , a pivotal rare earth oxide in environmental catalysis, has garnered extensive interest for soot oxidation owing to its exceptional oxygen storage capacity and oxygen vacancy-rich surfaces. To further optimize catalytic efficiency, we engineered spherical CeO 2 with exposed (111) facets via hydrothermal synthesis and uniformly anchored Pd species through a gas bubbling-assisted membrane reduction (GBMR) strategy. The formation of Pd–O–Ce interfacial units is identified as critical active sites, where metal-support interaction (MSI) significantly enhances oxygen transfer. Notably, the Pd 1.0 /CeO 2 catalyst achieves a remarkable T 50 of 356 °C (14% lower than pristine CeO 2 ), attributed to highly dispersed Pd species and abundant Pd–O–Ce interfaces. In contrast, excessive Pd species loading induces particle agglomeration, weakening MSI effect and catalytic performance. In situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) and density functional thoery (DFT) calculations reveal that the Pd–O–Ce interface promotes NO adsorption – the rate limiting step – by generating electron-rich Pd sites and oxygen vacancies, thereby accelerating NO-to-NO 2 conversion and subsequent soot oxidation. This work highlights the pivotal role of interfacial engineering in optimizing Pd–CeO 2 catalysts, offering a rational design strategy for high-performance soot oxidation systems in diesel emission control.
研究领域:
环境催化
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材料科学
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多相催化
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排放控制
·
纳米材料
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产品关联
DOI
高影响因子
SCIENTIA HORTICULTURAE
·
2025
·
IF 4.2
Peng Zhang,Miaomiao Lin,Gloria De Mori,Congcong Li,Guido Cipriani,Sumei Li,Qina Zhang,Zhenzhen Zhang,Yihang Li,Leiming Sun,Jinbao Fang,Xiujuan Qi
Kiwifruit has extremely high nutritional value, but its rootstock strongly influences the physiology and metabolism of its scion fruit. Here, we evaluated the influence of a new kiwifruit rootstock, Actinidia valvata ′Zhongmikangzhen No. 2′, on the leaves and fruits of the scion A. deliciosa ′Zhongmi 2′. The leaf size, leaf mineral element contents, fruit size (single-fruit weight, longitudinal diameter and transverse diameter), and fruit quality traits (soluble sugar content, vitamin C content, total acidity and dry matter content) of ′Zhongmi 2′ grafted on ′Zhongmikangzhen No. 2′ (zk) and A. deliciosa seedling (zp) rootstock were measured at five fruit developmental stages (30, 60, 90, 120, and 150 days after flowering (DAF)). The zk fruits were significantly larger than those of zp and their leaves were also longer. The leaf length and width of the zk fruits was significantly greater than those of the zp fruits. The leaf contents of Cu, P and Mo significantly differed at 60, 120 and 120 DAF, respectively. The fruits of the two stock–scion combinations may presented different flavors. UPLC–MS/MS analysis of the fruit metabolome revealed 1697 differentially expressed metabolites. These metabolites, which were divided into multiple categories through KEGG analysis, indicated significant differences in fruit quality and resistance. Decanoic acid (decreased in zk-hard) and 9-oxononanoic acid (increased in zk-hard) may collectively affect fruit aroma. Moreover, α-linolenic acid and 12-oxo-phytodienoic acid (a precursor of jasmonic acid), both of which increase in zk-hard, contribute to increased nutritional value and are involved in the abiotic stress response, respectively. This study revealed the effects of different rootstock–scion combinations on fruit quality traits and leaf mineral elements and provides a basis for studying the mechanisms of rootstock–scion interactions.
研究领域:
植物生理学
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园艺学
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代谢组学
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果实科学
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植物学
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DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·Vol. 13
·期 6
·120447
·
IF 7.2
Fenglan Fan,Lei Wang,Kang Guo,Xinyu Zhang,Shaomian Liu,Jie Xu,Hongli Chen,Jian Yu,Boxiong Shen,Wenqing Xu,Ziyi Zhong,Fabing Su
Currently, the primary challenge in industrial applications of CO-selective catalytic reduction of NO (CO-SCR) is the shortage of efficient catalysts that can tolerate the presence of oxygen (O 2 ). In this study, guided by density functional theory (DFT) calculations, we have developed an effective Co 3 O 4 catalyst incorporated with both oxygen vacancies (V O ) and cobalt vacancies (V Co ). This catalyst achieved 100 % NO conversion and 100 % N 2 selectivity at temperatures ranging from 200 to 350 °C, even in the presence of up to 5 vol% O 2 . DFT calculations and experimental results demonstrate a strong interaction between V O and V Co in the CO-SCR process. The presence of V Co enhances the NO adsorption on adjacent O atoms and promotes the formation of nitrite intermediates. Meanwhile, V Co and V O synergistically promote the dissociation of N-O bonds, thereby improving the NO conversion and the N 2 selectivity. This approach opens up new possibilities for designing advanced catalysts tailored for various environmental and industrial applications.
研究领域:
催化化学
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环境化学
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材料科学
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计算化学
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产品关联
DOI
高影响因子
POLYMER
·
2025
·
IF 4.5
Gang Tang,Yani Zhang,Feilong Wang,Zhenfeng Cheng,Haojie Shi,Tiwen Xu,Xiuyu Liu,Xin Wang
The flammability of bismaleimide (BMI) resins limits the application in cutting-edge fields. However, the addition of phosphorus-containing flame retardants results in deteriorated thermal stability of BMI resins. A phosphorus-free flame retardant strategy has been adopted to modify BMI resins while preserving high heat resistance. 3, 3’-Bisallyl-4,4’-bishydroxydeoxybenzoin (BA-BHDB) was synthesized from desoxyanisoin and used as a modifier for BMI resins by replacing conventional 2, 2’-diallylbisphenol A (DBA). The thermal, mechanical and flammability properties of BA-BHDB-cured BMI resins were investigated and compared with those of DBA-cured BMI resins. The cured BA-BHDB-BMI resins exhibit an LOI value for combustion of 35.0% and a UL-94 V-0 rating, whereas the cured DBA-BMI resins display a lower LOI value of 30.0% and a UL-94 V-1 rating. In the cone calorimeter measurements, the PHRR and THR values for combustion of BA-BHDB-BMI were 381.1 kW/m 2 and 92.5 MJ/m 2 , which were 53.2% and 25.2% lower than those of DBA-BMI, respectively. Additionally, the heat resistance of the cured BA-BHDB-BMI resins was greater than that of the DBA-BMI resins, with an initial thermal decomposition temperature of 428 °C and a glass transition temperature of 285 °C. The excellent anti-flammability of BA-BHDB-BMI may be attributed to the superior charring capacity of BA-BHDB, which contributes to the formation of a dense and protective char layer during thermal decomposition.
研究领域:
高分子科学
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材料化学
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火灾安全工程
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高性能聚合物
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DOI
高影响因子
SUPRAMOLECULAR CHEMISTRY
·
2011
·
IF 1.94
Jing Cao,Jun Xiang Feng,Yong Xiang Wu,Xue Qun Pei,Jiao Jiao Yan,Yang Liu,Wen Jie Qin,Xiao Bin Zhang
A novel 15-aza-5-crown ether linked to styryl chemosensory 13-(4-((9H-fluoren-9-ylidene)methyl)-2-nitrophenyl)-1,4,7,10-tetraoxa-13-azacyclopentadecane was designed and synthesised, it would not occur during photoisomerisation under radiation of light but shows special capability of selectively recognising for Sr2+.
研究领域:
化学
·
材料科学
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DOI
高影响因子
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
·
2022
·Vol. 106
·期 7
·2619-2636
·
IF 5.56
Chen Yunni,Xu Chenglong,Yang Huilin,Liu Zhenying,Zhang Zhibin,Yan Riming,Zhu Du
Abstract Perylenequinones (PQ) are natural polyketides used as anti-microbial, -cancers, and -viral photodynamic therapy agents. Herein, the effects of L-arginine (Arg) on PQ biosynthesis of Shiraia sp. Slf14(w) and the underlying molecular mechanism were investigated. The total content of PQ reached 817.64 ± 72.53 mg/L under optimal conditions of Arg addition, indicating a 30.52-fold improvement over controls. Comparative transcriptome analysis demonstrated that Arg supplement promoted PQ precursors biosynthesis of Slf14(w) by upregulating the expression of critical genes associated with the glycolysis pathway, and acetyl-CoA and malonyl-CoA synthesis. By downregulating the expression of genes related to the glyoxylate cycle pathway and succinate dehydrogenase, more acetyl-CoA flow into the formation of PQ. Arg supplement upregulated the putative biosynthetic gene clusters for PQ and activated the transporter proteins (MFS and ABC) for exudation of PQ. Further studies showed that Arg increased the gene transcription levels of nitric oxide synthase (NOS) and nitrate reductase (NR), and activated NOS and NR, thus promoting the formation of nitric oxide (NO). A supplement of NO donor sodium nitroprusside (SNP) also confirmed that NO triggered promoted biosynthesis and efflux of PQ. PQ production stimulated by Arg or/and SNP can be significantly inhibited upon the addition of NO scavenger carboxy-PTIO, NOS inhibitor N ω -nitro-L-arginine, or soluble guanylate cyclase inhibitor NS-2028. These results showed that Arg-derived NO, as a signaling molecule, is involved in the biosynthesis and regulation of PQ in Slf14(W) through the NO-cGMP-PKG signaling pathway. Our results provide a valuable strategy for large-scale PQ production and contribute to further understanding of NO signaling in the fungal metabolite biosynthesis. Key points • PQ production of Shiraia sp. Slf14(w) was significantly improved by L-arginine addition. • Arginine-derived NO was firstly reported to be involved in the biosynthesis and regulation of PQ. • The NO-cGMP-PKG signaling pathway was proposed for the first time to participate in PQ biosynthesis.
研究领域:
微生物学
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生物化学
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药理学
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分子生物学
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真菌代谢
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DOI
PubMed
高影响因子
ATMOSPHERIC ENVIRONMENT
·
2022
·
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 .
研究领域:
环境科学
·
大气化学
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DOI
高影响因子
危险品化学品经营许可证（带存储）