DYES AND PIGMENTS
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2026
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IF 3.9
Wenlong Xing,Yin Zhu,Jiahao Wu,Shijia Li,Zhenyu Zhao,Jinsong Zhang,Shaowei Bo,Ji Zeng,Jiangling Peng
The rapid and accurate detection of adenosine 5′-triphosphate (ATP) is crucial for clinical diagnostics, bioanalysis, and food safety. This study presents two novel aggregation-induced emission (AIE)-active probes, BIP-PP-1 and BIP-PP-2 , derived from a new N-heterocyclic AIEgen core, benzo[4,5]imidazo[1,2- c ]pyrimidine (BIP). The optimized probe, BIP-PP-2 , functions as a high-performance ATP sensor with a large Stokes shift, high sensitivity (LOD = 0.85 μM, linear range 0 – 90 μM), and excellent selectivity over structurally similar anions such as ADP, AMP, CTP, TTP, and UTP, a feature seldom achieved in small-molecule ATP probes. This unique selectivity is attributed to the novel BIP core, where specific π-π stacking and hydrogen-bonding interactions with the adenine moiety of ATP provide a superior stereoelectronic match, driving precise recognition and AIE-based fluorescence enhancement via a synergistic combination of electrostatic and non-covalent forces. BIP-PP-2 was successfully applied in real-time ATP imaging within live bacterial cells and, notably, in the rapid visual detection of bacterial contamination in beverages using a portable 365 nm UV lamp, achieving a visual detection limit of 3.9 × 10 5 CFU mL −1 under ambient light. This work introduces the BIP scaffold as a promising platform for functional dye design and establishes BIP-PP-2 as a robust analytical tool for on-site bioanalysis and food safety monitoring. © 2001 Elsevier Science. All rights reserved.
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JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
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2026
·Vol. 46
·期 9
·118212
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IF 6.3
Xinyu Wang,Ruipeng Wang,Jianli Jiang,Haining Meng,Haigang Hou,Jian Yang,Guiwu Liu,Guanjun Qiao
PbTe-based thermoelectric materials are promising for mid-temperature waste heat recovery, yet n-type PbTe underperforms its p-type counterpart. Herein, high-performance n-type PbTe is achieved through I/Ge co-doping and in-situ composite engineering with Sb 2 Te 3 prepared by melting combined spark plasma sintering. Sb 2 Te 3 alloying introduce in-situ formed Sb/Sb 2 Te 3 precipitates. Furthermore, iodine doping optimizes the carrier concentration to ∼3.4 × 10 19 cm –3 , boosting the room-temperature electrical conductivity to ∼1404 S cm −1 and yielding a high power factor of ∼17.4 μW cm −1 K −2 for the PbTe-Sb 2 Te 3 sample. Meanwhile, lattice thermal conductivity is synergistically suppressed to ∼0.37 W m –1 K –1 at 673 K through Ge-induced point defects/off-center anharmonicity and Sb/Sb 2 Te 3 precipitates. This synergistic strategy results in a peak ZT of ∼1.30 at 823 K and a high average ZT of ∼0.91 at 323–823 K. This work demonstrates that synergistic I/Ge co-doping and composite precipitation effectively enhance thermoelectric performance in n-type PbTe.
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ACS Applied Energy Materials
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2018
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IF 0
Lin Long,Zhenzhong Lan,Zhixiong Han,Yunfeng Qiu,Weixing Zhou
Endothermic hydrocarbon fuel has many advantages as a cooling medium in hypersonic aircraft; however substantial application has been greatly hindered due to easy coking, uncontrollable gas products, and low heat sink issues. Catalytic cracking of hydrocarbon fuel has been regarded as one of the most effective ways to improve the heat sink via modulating the cracking pathway. The incipient-wetness impregnation method was selected to load Co salts in commercial ZSM-5 in a large-scale manner; subsequent calcination in Ar gas resulted in Co3O4 nanosheet wrapped HZSM-5 composites. Salinization treatment was adopted to facilitate the dispersion of catalyst in a nonpolar solvent. The ratio of Brönsted/Lewis acidity decreased from 8.00 to 2.79 after modification by Co3O4 nanosheets. The synergistically catalytic effect between Co3O4 nanosheets and ZSM-5 was beneficial to the generation of a larger gas production rate with higher content of alkene, and thus resulting in a higher heat sink than benchmarked fuels. Catalytic cracking of n-decane (C10) in the presence of 0.1 wt % Co3O4 nanosheets@ZSM-5 could yield a heat sink as high as 4.64 MJ/kg at 758 °C, much higher than those of bare ZSM-5 (2.99 MJ/kg at 687 °C) and thermal cracking of C10 (3.77 MJ/kg at 728 °C). Meanwhile, the smart combination of Co3O4 nanosheets and commercial ZSM-5 could effectively suppress the coke deposition on the external surface of composites, thus resulting in efficient catalytic cracking at elevated temperatures for obtaining a higher heat sink.
研究领域:
催化化学
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能源材料
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化学工程
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石油炼制
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航空航天推进
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BIORESOURCE TECHNOLOGY
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2026
·
IF 8.2
Zhiqin Li,Yuxin Kang,Tengran luo,Zegang Qiu,Zhuoyuan Li,Yanan Zhu
Ce reduced the charge density around Co and enriched defects on surface of catalyst. • Ce incorporation facilitates vanillin adsorption and H 2 activation at molecular level. • 9Co-1Ce/NC achieves 100 % vanillin conversion and 100 % selectivity of target product. • Co-Ce synergy promotes rate-determining C-O bond cleavage of two-step reaction pathway. The efficient conversion of lignin-derived oxygenates into fuels and high-value chemicals is pivotal for the development of renewable energy systems. A central challenge lies in the selective cleavage of the inherently recalcitrant C–O bonds in bio-oil model compounds under mild conditions. In this study, a multi-interface Co-Ce catalyst supported on nitrogen-doped carbon was successfully constructed via a bimetallic synergy and metal–organic framework (MOF)-derived strategy. The introduction of Ce exerted a multifunctional synergistic effect beyond that of a conventional promoter, realizing multi-scale modulation of the catalyst structure and performance. It modulated the electronic structure of Co active sites, thereby optimizing reactant adsorption and H 2 activation. Also, it suppressed the agglomeration of Co nanoparticles, thereby enhancing metal dispersion. Concurrently, it significantly increased the concentration of oxygen vacancies on the support surface, which collaboratively provided abundant active sites. Furthermore, it guided the formation of a hierarchical pore architecture conducive to mass transfer. Through this precise design and regulation of the active site microenvironment, the optimal catalyst achieved 100 % conversion of the model compound vanillin with 100 % selectivity toward 2-methoxy-4-methylphenol (MMP) under mild conditions, while also exhibiting excellent cycling stability and broad substrate applicability. This work not only demonstrates catalytic performance rivaling that of noble metals through the efficient synergy between non-noble metals (Ce and Co) but, more importantly, elucidates the underlying mechanism for the selective cleavage of C–O bonds. Download: Download high-res image (117KB) Download: Download full-size image
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CHEMOSPHERE
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2022
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IF 8.943
Zhuwu Jiang,Yuchang Wang,Hai Yu,Ning Yao,Jyunhong Shen,Yan Li,HongYu Zhang,Xue Bai
With the rapid development of drinking water disinfection technology , extensive attentions are paid to the nitrogenous disinfection by-products (N-DBPs) that has strong carcinogenicity , thus their degradation becomes important for the health of human beings. In this work, for the first time, CoFe-LDH material used as particle electrode is proposed to treat trace N-nitrosopyrrolidine (NPYR) in a three-dimensional aeration electrocatalysis reactor (3DAER). The factors on the degradation efficiency and energy consumption of NPYR are systematically investigated, and the results of radical quenching experiments show that the degradation of NPYR is completed by combining with ·OH, ·O 2 and direct oxidation together. CoFe-LDH particle electrode plays a vital role in generating ·OH via heterogeneous ‾Fenton-like reaction. Moreover, the adsorbed saturated CoFe-LDH particle electrode can be regenerated by electrochemical action to induce further recycle adsorption and form in-situ electrocatalysis. This work pave a way for the removal of NPYR with high efficiency, low energy conservation and environmental protection.
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ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
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2022
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IF 7.129
Chao Zhao,Hu Zhang,Jingjing Zhou,Qiwei Liu,Qiang Lu,Ying Zhang,Xiaojin Yu,Shizhi Wang,Ran Liu,Yuepu Pu,Lihong Yin
Esophageal squamous cell carcinoma (ESCC) is an environment-relevant malignancy with a high mortality. Nitrosamines, a class of nitrogen-containing environmental carcinogens, are widely suggested as a risk factor for ESCC. However, how nitrosamines affect metabolic regulation to promote ESCC tumorigenesis is largely unknown. In this study, the transition trajectory of serum metabolism in the course of ESCC induced by N-nitrosomethylbenzylamine (NMBA) in rats was depicted by an untargeted metabolomic analysis, and the potential molecular mechanisms were revealed. The results showed that the metabolic alteration in rats was slight at the basal cell hyperplasia (BCH) stage, while it became apparent when the esophageal lesion developed into dysplasia (DYS) or more serious conditions. Moreover, serum metabolism of severe dysplasia (S-DYS) showed more similar characteristics to that of carcinoma in situ (CIS) and invasive cancer (IC). Aberrant nicotinate (NA) and nicotinamide (NAM) metabolism, tryptophan (TRP) metabolism, and sphingolipid metabolism could be the key players favoring the malignant transformation of esophageal epithelium induced by NMBA. More particularly, NA and NAM metabolism in the precancerous stages and TRP metabolism in the cancerous stages were demonstrated to replenish NAD + in different patterns. Furthermore, both the IDO1-KYN-AHR axis mediated by TRP metabolism and the SPHK1-S1P-S1PR1 axis by sphingolipid metabolism provided an impetus to create the pro-inflammatory yet immune-suppressive microenvironment to facilitate the esophageal tumorigenesis and progression. Together, these suggested that NMBA exerted its carcinogenicity via more than one pathway, which may act together to produce combination effects. Targeting these pathways may open up the possibility to attenuate NMBA-induced esophageal carcinogenesis. However, the interconnection between different metabolic pathways needs to be specified further. And the integrative and multi-level systematic research will be conducive to fully understanding the mechanisms of NMBA-induced ESCC.
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Journal of Environmental Sciences
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2022
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IF 6.796
Yong Wang,Cheng Liu,Haoyun Hu,Qiujun Lu,Haiyan Wang,Chenxi Zhao,Fuyou Du,Ningli Tang
The construction and application of novel highly efficient photocatalysts have been the focus in the field of environmental pollutant removal . In this work, a novel CuFe 2 O 4 /Bi 12 O 17 Cl 2 photocatalysts were synthesized by simple hydrothermal and chemical precipitation method. The fabricated CuFe 2 O 4 /Bi 12 O 17 Cl 2 composite exhibited much higher photocatalytic activity than pristine CuFe 2 O 4 and Bi 12 O 17 Cl 2 in the removal of bisphenol A (BPA) under visible-light illumination, which ascribed to the intrinsic p-n junction of CuFe 2 O 4 and Bi 12 O 17 Cl 2 . The photocatalytic degradation rate of BPA on CuFe 2 O 4 /Bi 12 O 17 Cl 2 with an optimized CuFe 2 O 4 content (1.0 wt.%) reached 93.0% within 30 min. The capture experiments of active species confirmed that the hydroxyl radicals (•OH) and superoxide radicals (•O 2 − ) played crucial roles in photocatalytic BPA degradation process. Furthermore, the possible degradation mechanism and pathways of BPA was proposed according to the detected intermediates in photocatalytic reaction process.
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JOURNAL OF HAZARDOUS MATERIALS
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2022
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IF 14.224
Wanfeng Wu,Yanan Qin,Yan Fang,Yukun Zhang,Shuxuan Shao,Fanxing Meng,Minwei Zhang
Currently, graphene quantum dots (GQDs) are widely used as antibacterial agents, and their effects are dependent on the reactive oxygen species (ROS) generated by photodynamic and peroxidase activities. Nevertheless, the supply of substrates or light greatly limits GQDs application. Besides, due to compensatory mechanisms in bacteria, comprehensive analysis of the molecular mechanism underlying the effects of GQDs based on cellular-level experiments is insufficient. Therefore, N-GQDs with inherent excellent, broad-spectrum antibacterial efficacy under acidic conditions were successfully synthesized. Then, via multi-omics analyses, the antibacterial mechanisms of the N-GQDs were found to not only involve generation ROS but also be associated with changes in osmotic pressure , interference with nucleic acid synthesis and inhibition of energy metabolism. More surprisingly, the N-GQDs could destroy intracellular acid-base homeostasis , causing bacterial cell death. In conclusion, this study provides important insights into the antibacterial mechanism of GQDs, offering a basis for the engineering design of antibacterial nanomaterials .
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Nature Communications
·
2022
·Vol. 13
·期 1
·1-9
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IF 17.694
Zhang Xiaoran,Zhu Xiaorong,Bo Shuowen,Chen Chen,Qiu Mengyi,Wei Xiaoxiao,He Nihan,Xie Chao,Chen Wei,Zheng Jianyun,Chen Pinsong,Jiang San Ping,Li Yafei,Liu Qinghua,Wang Shuangyin
Electrocatalytic urea synthesis emerged as the promising alternative of Haber–Bosch process and industrial urea synthetic protocol. Here, we report that a diatomic catalyst with bonded Fe–Ni pairs can significantly improve the efficiency of electrochemical urea synthesis. Compared with isolated diatomic and single-atom catalysts, the bonded Fe–Ni pairs act as the efficient sites for coordinated adsorption and activation of multiple reactants, enhancing the crucial C–N coupling thermodynamically and kinetically. The performance for urea synthesis up to an order of magnitude higher than those of single-atom and isolated diatomic electrocatalysts, a high urea yield rate of 20.2 mmol h −1 g −1 with corresponding Faradaic efficiency of 17.8% has been successfully achieved. A total Faradaic efficiency of about 100% for the formation of value-added urea, CO, and NH 3 was realized. This work presents an insight into synergistic catalysis towards sustainable urea synthesis via identifying and tailoring the atomic site configurations.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
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IF 9.9
Yun-Liang Dai,Ao-Ping Guo,Mei-Hua Gong,Xiao-Juan Zhang,Bian-Ying Wen
Exploring highly efficient electromagnetic interference (EMI) shielding filler is urgently desired for next-generation wireless communication and integrated electronics. In this regard, a series of heterogeneous MoO 2 / N -doped carbon (MoO 2 /NC) nanorods with tunable conductivity have been successfully synthesized by regulating the pyrolysis temperature within 600, 700 and 800 °C. Profiting from the rational design of heterointerface and low-dimensional structure, the MoO 2 /NC powder achieves stronger EMI shielding capacity with the incremental temperature. It is found that the MoO 2 /NC-800 nanorods exhibit the optimal average EMI shielding effectiveness (SE) of 57.2 dB at a thickness of ∼0.3 mm in the X band. Meanwhile, the corresponding shielding mechanisms of MoO 2 /NC nanorods are also elaborately explained. More interestingly, the increase of sintering temperature makes an obvious effect on absorption loss but has little influence on reflection loss, demonstrating that adjusting the pyrolysis temperature is an effective strategy to strengthen the electromagnetic energy dissipation.
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APPLIED SURFACE SCIENCE
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2022
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IF 7.392
Zuqin Duan,Xue Wang,Richu Wei,Qian Lei,Honglin Chen
A facile novel B, N co-doped carbon was fabricated by high-temperature pyrolysis of a mixture of ethylenediamine tetraacetic acid disodium salt and boric acid, on which Pd nanoparticles were loaded to synthesize highly efficient Pd/BNC catalyst for dehydrogenation of formic acid. The type and content of N are regulated by the doping of B elements in carbon materials. The high content of N and B doping provides more anchor sites for Pd and strengthens the interaction between the support and Pd nanoparticles, thus forming highly dispersed Pd nanoparticles and regulating the electronic property of Pd. Therefore, the obtained Pd/BNC catalyst displayed enhanced performance (TOF = 2760 h −1 ) and a lower activation barrier (31.84 kJ/mol). Furthermore, the catalyst also exhibited wonderful cycling stability for hydrogen evolution from formic acid.
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Journal of Environmental Chemical Engineering
·
2022
·
IF 7.968
Chen Chen,Hao Sun,Shengyu Zhang,Xiaosi Su
Biochar has demonstrated significant potential as an alternative to carbonaceous catalysts in peroxydisulfate (PDS) activation for the oxidation of organic pollutants . However, the catalytic performance of pristine biochar generally remains unsatisfactory due to its inert conjugated carbon framework and limited redox moieties. It is of great necessity to fabricate biochars with abundant effective sites to promote the degradation of pollutants mainly through the non-radical mechanism. Herein, corn stalk and melamine were selected as a precursor for preparing nitrogen-doped biochar (N-BC) through ball-milling and high-temperature pyrolysis under oxygen-limited conditions. Benefiting from the unique properties of nitrogen-doped biochar (N-BC), such as large specific surface area, well-formed oxygen-containing groups, and abundant structural defects, the 2,4-dichlorophenol (2,4-DCP) degradation efficiency reached 98.4% in 40 min by N-BC/PDS system. In particular, N-BC maintained excellent catalytic ability in both artificial and natural water conditions to efficiently degraded 2,4-DCP owing to its non-radical dominated degradation mechanism based on O 2 · - / 1 O 2 and electrons transferring. This study will expand biochar application and provide new insights for PDS activation to promote the non-radical oxidation of organic pollutants.
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