CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Zhuwei Yang,Linsen Li,Xiao Yang,Hui Xiong,Riguang Zhang,Zhao Jiang
In this study, a series of Ni-CeO 2 /TS-1 (Titanium Silicalite-1) catalysts were synthesized for dry reforming of methane (DRM). Among them, 5Ni-10CeO 2 /TS-1 exhibited the highest catalytic performance with 89 % CH 4 and 93 % CO 2 conversions, 4.81 mol CH4 ·g Ni -1 ·h −1 and 4.99 mol CO2 ·g Ni -1 ·h −1 specific activities, 95.5 % H 2 /CO ratio after 50 h, accompanied by the good stability with 2.9 % CH 4 and 2.3 % CO 2 activity loss within 100 h. Combined with various characterizations, the structure–function relationship was also investigated. For the physical and morphological analysis, it was indicated that the appropriate CeO 2 content could effectively diminish, disperse the Ni nanoparticles, and maintain MFI backbone structure. For the electronic structure, the introduced CeO 2 could improve the amount and strength of the surface Ni-O-X (Ti or Ce) species by changing the interaction among Ni nanoparticles, TS-1 and CeO 2 . It led to more Ni nanoparticles in stronger electron-deficient state, as well as more medium-strength basic sites, favoring for the activation of CH 4 and CO 2 . However, Ni nanoparticles would be covered when excessive CeO 2 was introduced, preventing the exposure of the active sites. Therefore, only the suitable CeO 2 in the catalysts could significantly improve catalytic performance for DRM with long-term stability. Furthermore, the good anti-sintering and anti-coking properties of 5Ni-10CeO 2 /TS-1 were mainly dependent on the optimal amount of surface Ni-O-X species with high strength. In-situ DRIFTS (diffuse reflectance infrared spectroscopy) analysis demonstrated that the introduced CeO 2 could help catalyst favor for activating CH 4 and CO 2 molecules, and inhibiting the CH 4 overcracking and carbon accumulation, confirmed by the long-term measurement and structure analysis of spent catalysts.
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Yuyan Feng,Dongbo Wang,Qingge Feng,Chenghua Fan,Ying Lu,Wenqiang Yang
Activation of peroxymonosulfate (PMS) to generate reactive oxygen species (ROS) for pollutant degradation via metal-free photocatalysts is an important green wastewater treatment and remediation method, but the pathway for generating ROS via exciton effects in catalysts is often overlooked. In this study, OH/C=O co-modified N-defective rod-shaped carbon nitride (Nv-CN-O) was designed and synthesized by soft template and alkali hydrothermal method. In the Nv-CN-O/PMS/Light system, there was a synergistic degradation of tetracycline (TC) by carriers and excitons, with a degradation rate 2.15 times higher than that of CN/PMS/Light. N vacancies and OH/C=O enhanced the adsorption to PMS, accelerated the charge transfer process, and activated PMS to generate ·O 2 − dominated reactive species. The functional group OH/C=O promoted the production of triplet excitons that through the energy transfer pathway to promote the production of 1 O 2 . Abundant ROS were involved in the TC degradation process, and three possible TC degradation pathways were proposed. Nv-CN-O has strong anti-interference ability in actual water bodies, shows a promoting effect on the degradation of TC, which has practical application potential.
✓ 已验证
产品关联
DOI
高影响因子
Food Bioscience
·
2025
·
IF 5.9
Cheng Yang,Pei-Zhi Dong,Zhou-Ning Jiang,Yanan Li,Yue-Hong Pang
The illegal addition of phosphodiesterase-5 (PDE-5) inhibitors in functional food poses significant food safety risks and health issues, requiring a sensitive and effective enrichment and detection method. Herein, a magnetic COFs (Fe 3 O 4 @TpDBA) was prepared by a layer-by-layer growth strategy. TpDBA was synthesized through the condensation of 1,3,5- Triformylphloroglucinol (Tp) and 4,4′-diamino-(1,1′-biphenyl)-3,3′-dicarboxylic acid (DBA). Fe 3 O 4 @TpDBA was used as an adsorbent for magnetic solid-phase extraction (MSPE) of PDE-5 inhibitors (sildenafil, tadalafil, and vardenafil), which enabled their efficient enrichment within 2 min. The lower binding energy value obtained through molecular docking calculations indicates stronger binding ability. The prepared Fe 3 O 4 @TpDBA exhibited high chemical stability (resistant to acid, alkali and organic reagents) and good reusability (10 adsorption/desorption cycles). Coupled with high-performance liquid chromatography-tandem mass spectrometry, Fe 3 O 4 @TpDBA-MSPE exhibited great potential in PDE-5 inhibitors. The developed method was optimized and validated, exhibiting a wide linear range and low limits of detection. Moreover, it was successfully applied to the determination of three PDE-5 inhibitors in five functional foods.
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2024
·
IF 8.5
Hai Chi,Chong Yang,Guoqin Liu
In this study, an electrochemical sensor based on MoS 2 with enhanced electrochemical signals from electrochemically activated carbon cloth (EACC) electrodes and cross-linked o- aminothiophenol functionalized AuNPs ( o- ATP@AuNPs) was developed for the detection of the unsaturated vegetable oil antioxidant tert-butylhydroquinone (TBHQ). In this approach, carbon cloth is activated through the implementation of electrochemical methods, thereby effectively increasing its specific surface area. The resulting EACC, serving as an electrode substrate, enables the growth of additional nanomaterials and enhances conductivity. The incorporation of MoS 2 effectively augments the sensitivity of the electrochemical sensor. Subsequently, MIP/MoS 2 /EMCC is formed via electropolymerization, utilizing TBHQ as the template molecule and o-ATP@AuNPs as the functional monomer. The S S bond of o-ATP ensures a strong and stable connection between MoS 2 and o-ATP@AuNPs, thereby facilitating the immobilization of MIP. In addition, the high conductivity possessed by o- ATP@AuNPs could effectively improve the sensitivity of the electrochemical sensor. Under the optimal conditions, MIP/MoS 2 /EMCC could determine TBHQ in the range of 1 × 10 −3 μM to 120 μM by differential pulse voltammetry (DPV) with a detection line of 0.72 nM. The proposed MIP/MoS 2 /EMCC is expected to be applied in the future for the selective and sensitive detection of TBHQ in vegetable oils.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHINESE JOURNAL OF CATALYSIS
·
2025
·
IF 17.7
Zhouzhou Wang,Qiancheng Zhou,Li Luo,Yaran Shi,Haoran Li,Chunchun Wang,Kesheng Lin,Chengsi Wang,Libing Zhu,Linyun Han,Zhuo Xing,Ying Yu
Neutral oxygen evolution reaction (OER) is a crucial half-reaction for electrocatalytic chemical production under mild condition, but with limited development due to low activity and poor stability. Herein, a tungsten-doped cobalt molybdate (WDCMO) catalyst was synthesized for efficient and durable OER under neutral electrolyte. It is demonstrated that catalyst reconstruction is suppressed by W doping, which stabilizes the Co-O-Mo point-to-point connection in CoMoO 4 architecture and stimulates to a lower valence state of active sites over the surface phase. Thereby, the surface structure maintains to avoid compound dissolution caused by over-oxidation during OER. Meanwhile, the WDCMO catalyst promotes charge transfer and optimizes *OH intermediate adsorption, which improves reaction kinetics and intrinsic activity. Consequently, the WDCMO electrode exhibits an overpotential of 302 mV at 10 mA cm –2 in neutral electrolyte with an improvement of 182 mV compared with CoMoO 4 electrode. Furthermore, W doping significantly improves the electrode stability from 50 h to more than 320 h, with a suppressive potential attenuation from 2.82 to 0.29 mV h –1 . This work will shed new light on designing rational electrocatalysts for neutral OER.
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Qibing Wang,Luman Liu,Jianlong Wang,Wanjing Luo,Ren Wang,Lili Chen,Jinsheng Sun,Jie Yang,Huicui Sun,Fulong Peng,Jianhua Guo
Deep and ultra-deep drilling operations face significant challenges such as high temperatures and salinity levels. Drilling fluids are prone to failure under these conditions, causing increased filtration loss and frequent downhole accidents. To address these critical issues, this study utilised the high-temperature-stable adsorption properties of siloxanes to synthesise a multi-target adsorption-type fluid filtrate reducer, PFS-1. The molecular structure and thermal stability of PFS-1 were characterised using 1 H NMR, Fourier transform infrared spectroscopy and thermogravimetric analysis. Its effects on the microstructure of drilling fluid were investigated using scanning electron microscopy, X-ray diffraction and zeta potential analysis, thereby elucidating the interaction mechanism between PFS-1 and clay particles. Experimental results demonstrate that PFS-1 possesses excellent thermal stability, with a decomposition onset temperature exceeding 318°C. After thermal ageing at 240°C for 16 h and 72 h, the filtration loss of drilling fluid containing 2 wt% PFS-1 was 9.1 mL and 9.7 mL, respectively. Additionally, in a 15 wt% NaCl brine-based drilling fluid system, the API filtration loss was just 5.6 mL after ageing at 220°C with 2 wt% PFS-1. Results confirm the superior high-temperature resistance and salt tolerance of the novel filtration reducer. Through the synergistic effect of Si–O–Si chemical adsorption and ionic bonding, PFS-1 forms a stable multi-point adsorption on the surface of the clay particles, inhibiting their hydration and aggregation and thereby reducing the fluid filtration loss. Furthermore, the performance of PFS-1 was improved by 18.75 % compared to that of commercial products, indicating its strong potential for application in demanding drilling environments characterised by ultra-high temperatures and high salinity.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Han Lv,Zhicheng Cui,Qi Zhao,Chaofan Zhang,Bin Cui,Dandan Zhou
Both iron-reducing bacteria (IRB) and iron are loaded to anode during the microbial electro-Fenton (MEF) system, which simultaneously achieves the refractory wastewater treatment and iron circulation. Meanwhile, the amounts of iron play a pivotal role in both performance of microbial electrochemical system (MES) and regulation of the microbial community and metabolism. Therefore, additional α-Fe 2 O 3 was adopted in MEF system, and then the regulation mechanism for anodic microorganism was thoroughly revealed in this study. When α-Fe 2 O 3 loading increased to 2 mg/cm 2 , phenol removal rate improved by 3.8 times and the anaerobic biofilm thickness of 1000 μm on the anode surface; following, current density increased by 96.2 % and current resistance reduced by 50.5 %. Metatranscriptomic sequencing indicated that α-Fe 2 O 3 could improve microbial metabolism activity via up-regulating the enzymes associated with tricarboxylic acid cycle (TCA cycle). Meanwhile, Shewanella abundance increased 326-fold, and α-Fe 2 O 3 up-regulated the expression of Type II secretion system and cytochrome c synthesis, promoting extracellular electron transfer (EET) process via direct contact pathway. Overall, this study provided a novel strategy for optimizing the performance of MEF system.
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Shu Yang,Yijun Ren,Ganbing Zhang,Hui Xu
Single-atom nanozymes (SAzymes) exhibit superior catalytic activity, making it a promising candidate for constructing biosensors. Herein, we constructed a hollow carbon nanocages supported, N and O double-coordinated Fe SAzymes (HCNs@Fe SAs) through a template and pyrolysis strategy. Abundant oxygen atoms in pre-modified template SiO 2 @resorcinol-formaldehyde provided enough binding sites and promoted the dispersion and stabilization of metal atoms. Compared with non-O modified nanozymes, HCNs@Fe SAs exhibited an 8-fold enhancement in catalytic efficiency. Benefiting from its exceptional peroxide-like activity, a straightforward and dependable colorimetric sensing platform was developed to assess the activity of Acetylcholinesterase and its inhibitor organophosphorus pesticide (OP) in real water samples and fruit substrates, with the limit of detection of 0.02318 mU mL −1 and 0.85 ng mL −1 , respectively. An OPs test paper was also designed for point-of-care determination of OP with satisfactory sensitivity. This study provides a new strategy of template pre-modification to design SAzymes with enhanced catalytic efficiency.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2020
·
IF 5.162
Vemana Gowd,Naymul Karim,Lianghua Xie,Mohammad Rezaul Islam Shishir,Yang Xu,Wei Chen
Polysaccharides and fruit extracts are applied in dairy products to enhance their nutritional property, but the effects of such formulations on the functions and biological activities are yet to be explored. Therefore, this study was aimed at evaluating the effect of interactions among milk protein (beta-lactoglobulin; BLG), polysaccharides (pectin, P; chitosan, CH), and anthocyanin (pelargonidin-3- O -glucoside; P3G) in improving the bioavailability and biological activity of P3G. After gastrointestinal digestion (GID), the content of free P3G in different model solutions were as follows: P3G-alone (73.59 μg/mL), P3G-P (66.59 μg/mL), P3G-CH (36.72 μg/mL), P3G-BLG (64.92 μg/mL), P3G-P-BLG (64.92 μg/mL), and P3G-CH-BLG (39.61 μg/mL). Less amount of free P3G in model solutions indicated increased complex formation of P3G with protein and/or polysaccharides during GID. These complexes resulted in protection and progressive release of P3G in the gastrointestinal tract. Chitosan exhibited more protection to P3G compared with P and BLG. In addition, α-glucosidase inhibitory activity and ROS scavenging activities of conjugated-P3G samples were potentially augmented after GID. However, the presence of polysaccharides and protein in the model solutions did not show any negative effect on the biological activity of P3G. Thus, pure P3G can be used as a nutritional ingredient in dairy industries.
✓ 已验证
DOI
PubMed
高影响因子
Oncotarget
·
2017
·
IF 5.168
Ting Tao,Caimei He,Jun Deng,Yanjun Huang,Qiongli Su,Mei Peng,Meiling Yi,Kwame Oteng Darko,Hui Zou,Xiaoping Yang
Quercetin is a naturally existing compound and shows attractive anticancer properties for a variety of solid tumors including glioma, bladder cancer, hepatocellular carcinoma, breast cancer, hematological malignancies and prostate carcinoma. However, these anticancer properties have not been clinically approved due to unclear mechanistic information and its low bioactivity. In our previous study, we elucidated that quercetin activates AMPK pathway which is the major mechanism for its unique anticancer effect in bladder cancer. In the present study, we are trying to enhance its bioactivity by chemical modification using fluorination approach to prepare novel chemical entities, based on the principle of intermediate derivative method (IDM). The compound we obtained is named 8-trifluoromethyl-3,5,7,3′,4′-O-pentamethyl- quercetin (TFQ), characterized by NMR spectra and mass spectrum (MS). The results from MTT and cologenic assay in two human and one murine bladder cancer cell lines showed that TFQ exhibits more potent inhibition on the three bladder cancer cell lines than quercetin (Que) although this enhanced effects is not very dramatic. Furthermore, we found that the survival of normal bladder cells PEBC was not significantly suppressed by TFQ compared with Que. Western blot analysis showed that TFQ possess more potent AMPK activation than Que. The downstream of AMPK was further examined by western blot. TFQ treatment is able to inactivate mTOR signaling pathway with the regulation of mTOR, 4EBP1 and P70S6K. These results demonstrated that the fluorinated quercetin derivative TFQ inhibits bladder cancer cell growth through the AMPK/mTOR pathway. Altogether, our findings suggest that TFQ could serve as a new potential therapeutic agent for bladder cancer more effective than Que.
✓ 已验证
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2022
·
IF 9.231
Lijuan Ma,Manman Gao,Linqi Zhang,Yang Qiao,Jianxun Li,Liping Du,Huiling Zhang,Hong Wang
Dianhong tea (DHT) is popular for its pleasant caramel-like aroma. In this study, the aroma profile of high-grade DHT have been studied using gas chromatography-mass spectrometry (GC-MS) and gas chromatography–olfactometry (GC-O) combined with headspace solid phase microextraction (HS-SPME). A total of 52 aroma-active compounds were identified by GC-O coupled with aroma extract dilution analysis (AEDA) and odor specific magnitude estimation (Osme). Among them, quantification of 21 aroma-active compounds indicated that the content of linalool (5928 µg/kg) was the highest in high-grade DHT, followed by phenylethanol (3923 µg/kg) and phenylacetaldehyde (1801 µg/kg). Sensory-directed aroma recombination and omission tests further verified that phenylacetaldehyde, linalool, geraniol and 3-ethyl-2,5-dimethylpyrazine were important contributors to the overall sensory characteristics of high-grade DHT which dominated mainly by floral, sweet and caramel-like odors. This work will provide a theoretical reference for comprehensively understanding the aroma characteristic of DHT.
✓ 已验证
DOI
PubMed
高影响因子
Materials Research Express
·
2021
·Vol. 8
·期 12
·125006
·
IF 1.62
Peng She,Chun Yao,Jun Li,Hegang Bao,Xiuquan Xu,Hong Zhou
Co-doping is one of the most facile and efficient strategies for boosting the photocatalytic performance of g-C3N4. Herein, a series of Ti and O co-doped g-C3N4 (Ti/OCN) composites with excellent photocatalytic inactivation activity of Enterobacter cloacae (E. cloacae) were successfully synthesized by simple calcination of urea/formic acid/TiCl4 precursor. The obtained Ti/OCN-3 possessed the optimal photocatalytic capability with complete inactivation of 6.20 log CFU·ml−1 E. cloacae under 60 min of visible light irradiation. The improved photocatalytic disinfection performance was probably attributed to the synergistic effect of Ti and O co-doping, which led to an extended visible light response and accelerated charge transport efficiency. Furthermore, scavenger trapping and electron spin resonance (ESR) experiments revealed that ·O2−, h+ and ·OH were responsible for the enhanced inactivation activity. Overall, this research provided a promising strategy for fabricating g-C3N4-based catalysts to efficiently deal with the hazards of pathogenic microorganisms.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）