RARE METALS
·
2021
·Vol. 41
·期 1
·166-178
·
IF 4.003
Zhang Bo-Lin,Deng Li-Feng,Liu Bo,Luo Chun-Yun,Liebau Michael,Zhang Shen-Gen,Gläser Roger
Abstract Combining the redox properties of Co and the acid properties of Nb in a Co 3 -Nb-O x catalyst is shown to provide superior performance in the selective catalytic reduction of NO with NH 3 (NH 3 -SCR). Co 3 O 4 shows average activity, however, it exhibits a poor N 2 selectivity. Nb 2 O 5 is not active for NH 3 -SCR. However, the mixed Co 3 -Nb-O x catalyst shows higher NO conversion and N 2 selectivity than the single Co 3 O 4 and Nb 2 O 5 catalysts at 100–300 °C. The results of temperature programmed reduction by H 2 and X-ray photoelectron (XP) spectra indicate that the addition of Nb changes the chemical states of Co and decreases the concentration of Co 3+ and O α , adjusting the activity for catalytic oxidation to a moderate level. This suppresses the formation of undesired N 2 O from the over-oxidation of NH 3 . Incorporation of Co and Nb into one solid synergistically couples their redox behavior and surface acidity, ensuring the high catalytic activity and N 2 selectivity in NH 3 -SCR. Graphical Abstract
✓ 已验证
DOI
高影响因子
ENERGY & FUELS
·
2022
·
IF 4.654
Jing Li,Suxia Ma,Rongji Cui,Nuo Xu,Ting Pei
Solid waste fly ash can encroach on land, contaminate the environment, and jeopardize human health. An alkali fusion method combined with a hydrothermal method was adopted to prepare fly ash-derived ZSM-5 molecular sieves, and a series of Fe/ZSM-5 catalysts were also prepared to test their catalytic performance in NO oxidation with H2O2. Moreover, the characteristics of catalysts synthesized by fly ash, as well as the relationship between the structure and the catalytic activity, were analyzed in detail through multiple characterization approaches. The results gave important insights into the active sites of catalytic oxidation. They concluded that 10% Fe/ZSM-5 had the best catalytic activity in which Fe sites and Brønsted acid sites collectively provided the catalytic functionality, and 92% NO removal efficiency was obtained achieved under optimal experimental conditions. This work provided a new way for recycling fly ash and developing low-cost catalysts for NO removal.
✓ 已验证
DOI
高影响因子
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
·
2021
·
IF 3.995
Li Huang,Yiqing Zeng,Yibo Gao,Hu Wang,Yuhao Zong,Zhengfeng Chang,Shule Zhang,Pei Han,Yang Yu
The oxidation of SO 2 into SO 3 promote the formation of NH 4 HSO 4 (ABS), which can cover surface active sites catalyst, and then leading to the decrease of NH 3 -SCR De-NO x activity. In this work, phosphorus species were loaded on the V 2 O 5 -MoO 3 /TiO 2 De-NO x catalyst to enhance its SO 2 resistance via inhibiting the SO 2 /SO 3 conversion. XRD and N 2 -adsorption results showed that phosphorus has little impact on the structure and pore property of the catalyst. The results of XPS , H 2 -TPR, and NH 3 -TPD analyses illustrated that suitable amount of phosphorus (1%) increases the content of polymeric vanadate and chemisorbed oxygen (O α ) of the catalyst, which is benefit to the SCR process. Phosphorus species decreases the SO 2 absorbability and SO 2 oxidation activity of V-Mo-P/Ti catalysts, thus it exhibits higher NH 3 -SCR activity than that of the P-free catalyst at presence of SO 2 due to the lower SO 2 /SO 3 conversion and fewer amount of NH 4 HSO 4 deposition.
✓ 已验证
DOI
高影响因子
Reaction Kinetics Mechanisms and Catalysis
·
2019
·Vol. 128
·期 2
·681-693
·
IF 1.428
Xie Chong,Yang Shenghui,Shi Jian-Wen,Niu Chunming
A novel MnO x –TiO 2 catalyst with hollow silkworm structure was synthesized successfully via an ethanol-thermal strategy by using activated carbon fiber felt as template for the first time. The silkworm-like MnO x –TiO 2 catalyst (MnTi) exhibited higher NO x conversion in the whole experimental temperature region (90–330 °C) under a high space velocity of 36,000 h −1 in comparison with the common MnO x –TiO 2 catalyst without hollow silkworm structure (MnTi-B). The excellent catalytic performance of MnTi can be attributed to its high specific surface area, large content of active surface oxygen species (O S ), and more surface acid sites. In addition, the MnTi catalyst also exhibited excellent resistance to water or SO 2 poisoning.
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Tianxing Cui,Yumei Su,Xionghui Fu,Yi Zhu,Yuanming Zhang
Herein, we fabricated hydroxyl groups decorated Bi 4 O 5 I 2 nanosheets, and the contents of hydroxyl groups on the surface could be controlled by changing the reducibility of organic solvents. The stronger reducibility of organic solvents, the more hydroxyl groups on the surface. The hydroxyl groups on the surface of Bi 4 O 5 I 2 nanosheets have significant effects on photocatalytic activity. For degradation of organic pollutants, the surface hydroxyls form hydrogen bonds with organic pollutants, which is conducive to the adsorption of the substrates. For NO removal, the NO adsorbed on the hydroxyl groups is more oxidized into a toxic by-product NO 2 instead of NO 3 - , so less hydroxyl groups are important for photocatalysts towards NO removal. These new discoveries provide new insights to improve photocatalytic activities by modulating surface functional groups of photocatalysts.
✓ 已验证
DOI
高影响因子
AQUACULTURE NUTRITION
·
2026
·Vol. 2026
·期 1
·4395252
·
IF 4.6
Haoran Yin,Lixing Wang,Zexin Lin,Ruilin Li,Qinxiao Cai,Zhiyu Zhou,Xiaoyi Wu
The hybrid grouper ( Epinephelus fuscoguttatus ♀ × Epinephelus lanceolatus ♂), a typical carnivorous fish, has a limited ability to utilize dietary carbohydrates (CHOs). This study investigated the effects of different dietary arginine (Arg) levels (2.55 and 3.65%) and CHO-to-lipid ratios (C/L: 3.57, 2.39, 1.61) on the glycometabolism of hybrid grouper. Juvenile hybrid grouper (mean initial body length and weight: 7.8 cm and 13.04 g) were manually fed to fullness two times per day throughout a 7-week growth trial. The results showed that the C/L3.67 diets significantly elevated 2-h postprandial blood glucose concentration, as well as reduced hepatic glycogen level, intraperitoneal fat ratio (IPF), and the whole-body and hepatic lipid contents relative to the C/L2.39 and C/L1.61 diets. Dietary Arg supplementation significantly improved this metabolic disorder. These improvements were associated with enhanced plasma insulin-like growth factor 1 (IGF-1) concentration, hepatic phosphofructokinase (PFK) activity, nitric oxide (NO), and cyclic guanosine monophosphate (cGMP) levels. They were also linked to the upregulated expression of key molecules in related pathways, including IGF-1 receptor (igf1r), phosphatidylinositol 3-kinase (pi3k), protein kinase AMP-activated catalytic subunit α (ampk-α), and protein kinase B (Akt) genes, as well as glucose transporter 4 (GLUT4) and mechanistic target of rapamycin (mTOR) proteins. Generally, suitable dietary Arg supplementation can reduce postprandial blood glucose and hepatic glycogen concentrations in hybrid grouper fed high C/L diets by regulating key genes and proteins within the IGF-1 and NO-cGMP pathways. This finding provided a nutritional intervention to enhance CHO utilization in hybrid grouper aquaculture.
✓ 已验证
产品关联
DOI
高影响因子
Journal of the American Chemical Society
·
2026
·
IF 16.6
Wei Tan,Xueqing Liu,Jiawei Yang,Xiaoyu Ji,Kailong Ye,Shaohua Xie,Ge Yao,Chuanzhi Sun,Fudong Liu,Lin Dong
Abstract The catalytic conversion of gaseous NO to NH3 offers a promising dual-benefit strategy for environmental remediation and sustainable chemical synthesis. Herein, CuO/Al2O3 catalysts with varied CuO loadings (x wt %, xCu/Al) were developed for the possible NH3 production from NO reduction by CO with the assistance of H2O. While increasing CuO loading (1–12 wt %) monotonically improved NO conversion to N2 under dry conditions, the introduction of H2O dramatically boosted NO conversion on 5Cu/Al with highly dispersed CuOx clusters, raising its NO conversion comparable to that of 12Cu/Al. Further analysis revealed that NH3 was generated on xCu/Al catalysts under wet conditions, with NH3 generation on 5Cu/Al initiating at the lowest temperature (275 °C) and being the most vigorous. Combined experimental and theoretical analysis suggested that, on CuOx clusters, H2O facilitated the conversion of the NCO* intermediate to NH3 with a much lower activation barrier compared to its CO-mediated pathway to N2, well explaining the boosted NO conversion and NH3 yield on the 5Cu/Al catalyst upon H2O addition to NO + CO flow. This work highlights that a simple, earth-abundant Cu catalyst enabled the efficient and cost-effective synthesis of NH3 from air pollutants of NO and CO under mild conditions, underscoring a sustainable strategy that simultaneously addresses pollution abatement and resource recovery.
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Zishuo Hou,Wuyang Zhang,Gangfeng Li,Hannan Cui,Hongli Chen,Tengjiao Wang,Yafei Feng,Peng Li
Infected diabetic wounds have become a major global health threat due to their complex conditions, making them difficult to heal. Herein, a coaxial fibrous dressing capable of sequential release of nitric oxide (NO) and molecular hydrogen (H2) was designed for the treatment of infected diabetic wounds. The outer layer of the coaxial fibers was physically loaded with the NO donor, enabling the first stage of rapid and high-level NO release (over 170 μM). The released NO contributed to the antibacterial function of the dressing (in vitro antibacterial assays demonstrated eradication rates of 99.99% and 99.04% against S. aureus and E. coli, respectively), thus facilitating accelerated transition of the wound through the inflammatory phase. The inner layer of coaxial fibers becomes progressively exposed following structural disintegration, enabling the hydrolysis of encapsulated H2 donor to achieve on-demand release of H2 under near-infrared (NIR) irradiation. The released H2 could promote wound healing through reactive oxygen species (ROS) scavenging and macrophage M2 polarization, as validated by in vitro cell assessments. In vivo infected full-thickness skin defect model in diabetic mice demonstrated that the NO/H2 sequential release coaxial fibrous dressing significantly accelerated healing of infected wounds through rapid bactericidal action via substantial NO release, followed by further sequential H2 release promoting repairing and regeneration. This temporally sequential delivery of antibacterial and healing-promoting functions significantly accelerated the healing of infected diabetic wounds.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Food Chemistry-X
·
2026
·
IF 9.2
Yongfa Guo,Jie Zhou,Zhuangzi Zhong,Shuang Li,Junjie Lu,Dingkun Liu,Li He,Shuaiwen Yin,Yang Wu,Huimin Sun
Using leaves from a single origin and the same harvest batch, processing was the sole variable: homologous Gougunao No. 2 green and black teas were produced. An integrated workflow (UHPLC–HRMS and HS-SPME–GC–MS) was combined with flavonoid contents and multiple antioxidant assays to probe how processing reshapes the composition–function–aroma nexus. Multivariate analysis clearly separated the two teas, with green tea showing higher flavonoids and stronger antioxidant readouts. In non-volatile fraction, 1988 features were detected, of which 713 changed significantly, implicating remodelling of flavonoid- and catechin-centred pathways and purine metabolism. In volatile fraction, 1066 compounds were annotated, with 76 differing significantly; relative odor activity value based analysis indicated that unsaturated aldehydes and sulphur-containing compounds drive a roasted, full-bodied profile in black tea, whereas alcohols, esters and selected terpenoids confer fresher, fruity notes in green tea. Overall, these results support a processing-associated bitterness–aroma rebalancing pattern and nominate candidate chemical indicators for quality evaluation.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMOSPHERE
·
2022
·
IF 8.943
Wei Li,Huanyu Yue,Chunyan Zhang,Junyu Hu,Qiaoli Wang,Yuanming Li,Shihan Zhang,Jianmeng Chen,Jingkai Zhao
The chemical absorption-bioelectrochemical reduction (CABER) integrated system provides an alternative of good potential for NO removal. The efficient utilization of cathode electrons directly determines the system performance and operating cost. Herein, we synthesize a polypyrrole/carbon nanotubes (PPy/CNTs) composite to engineer a micro-and nanoscale interface with low resistance and high biocompatibility between the cathode and biofilms in the CABER system. The resulting PPy/CNTs biocathodes exhibit 36.4% increase in biomass density, 40.7%–302.6% increase in Faraday efficiency along Fe(III)EDTA reduction, and 204% increase in Fe(II)EDTA-NO reduction rate. The enrichment of functional microorganisms is validated to be a key strengthening factor, as the proportion of which increased from 57.9% to 84.6%. Moreover, for efficient electron transfer and utilization, a low-resistance electron transfer route, “electrode substrate → PPy (→ CNTs) → microbial cells → Fe(III)EDTA or Fe(II)EDTA-NO”, is realized in the multiscale conductive networks constructed of PPy/CNTs composite and microbial nanowires .
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Shanshan Shang,Chao Yang,Yuanmeng Tian,Zeyu Tao,Mallory Smith,Hongyan Zhang,Lin Zhang,Liangchun Li,Qinfen Gu,Hong-Cai Zhou,Yong Sik Ok,Jin Shang
Selective adsorption using porous materials is a promising approach to removing ambient nitrogen dioxide (NO 2 ). However, the highly reactive nature of NO 2 and the often-associated release of nitric oxide (NO) render a formidable challenge in developing effective and stable adsorbents. Here, we designed multivariate porphyrin-based metal–organic frameworks (MTV-PMOFs Al-PMOF(Ni x Co y )) featuring atomically dispersed Ni/Co dual-metal centers in the porphyrin ring as active adsorption sites, as robust adsorbents capable of synergistically boosting NO 2 adsorption capability and retaining the evolved NO. The introduction of the Ni/Co dual-metal sites in MTV-PMOFs greatly enhanced the NO x adsorption performance. Under dry conditions, Al-PMOF(Ni 1 Co 1 ) exhibited a NO 2 adsorption capacity of 3.66 mmol/g (100 ppm NO 2 in feed), among the highest under similar conditions, a high NO retention ability, and good regenrability (85%). Under wet conditions, its NO 2 removal capacity was further elevated by more than 50% (5.65 mmol/g). Moreover, the Ni/Co ratio in MTV-PMOFs dictates a structure–property relationship between the released amount of NO and adsorbed capacity of NO 2 . Such a corporative NO 2 and NO adsorption was for the first time established in MOFs. The material stability and potential economic value were also investigated to demonstrate the applicability of MTV-PMOFs as NO 2 adsorbents. This work provides new perspectives for the development of adsorption-based technology for mitigating ambient NO 2 pollution and managing other corrosive and toxic gases.
✓ 已验证
产品关联
DOI
高影响因子
POLYMER COMPOSITES
·
2023
·Vol. 44
·期 10
·6337-6348
·
IF 5.2
Kaiqiang Luo,Jinjing Guo,Jun Xu,Baohua Guo
As an important surface modifier, conventional silane coupling agents generally emit volatile organic compounds (VOCs) like methanol or ethanol during the modification of glass fiber. To avoid VOCs emission, a phenol/amine co-deposition of tannic acid (TA) with polyethyleneimine (PEI) was used to modify glass fiber (TP-GF) based on mussel-inspired surface chemistry. The reinforcement effect of TP-GF on polyamide 6 (PA6) matrix was investigated, and the corresponding results were compared with those of γ-aminopropyltriethoxysilane (KH550) modified glass fiber (KH550-GF)/PA6 composites. The results showed that the interfacial adhesion between TP-GF and PA6 matrix was superior to that between KH550-GF and PA6 matrix, and thus TP-GF/PA6 composites manifested more excellent mechanical properties than KH550-GF/PA6 composites. Among these composites, TP-GF (1.05 wt% of coating amount)/PA6 composites exhibited the optimal mechanical properties (tensile strength: 151.3 MPa, notched impact strength: 13.8 kJ m −2 ) compared with KH550-GF (1.33 wt% of coating amount)/PA6 composites (tensile strength: 144.8 MPa, notched impact strength: 9.5 kJ m −2 ). In particular, the notched impact strength was significantly increased by 45%. Notably, there was no VOCs generation during the preparation of TP-GF, indicating that TP-GF could be used as an environmentally friendly glass fiber for the fabrication of high-performance PA6 composites.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）