APPLIED CATALYSIS B-ENVIRONMENTAL
·
2023
·
IF 22.1
Bin Chen,Zining Zhou,Yuze Li,Kok Bing Tan,Youting Wang,Xiaoping Rao,Jiale Huang,Xiaodong Zhang,Qingbiao Li,Guowu Zhan
Herein, biomass-derived activated carbon (bio-AC) was synthesized using rice husk as a biotemplate and natural carbon source. After immobilization of Ni, the supported Ni/bio-AC showed excellent catalytic activity in the pyrolysis of fatty acids to paraffin-based biodiesel in H 2 -free and solvent-free conditions, corresponding to the conversion of 99.6% and a total alkane yield of 95.1%, including 88.9% heptadecane. Based on comprehensive characterizations, the calculated turnover frequency of Ni/bio-AC was 3.9 times that of conventional Ni/AC. Significantly enhanced olefin selectivity was further obtained by N-doping of Ni/bio-AC, which was attributed to the inhibition of -COO* dissociation by the Ni-N sites. The possible catalytic reaction pathways from stearic acid to heptadecane via aliphatic alcohol as a reaction intermediate were investigated. Besides, efficient conversions of saturated and unsaturated plant oils were also achieved over Ni/bio-NAC catalysts in Py-GC/MS through pulsed catalytic pyrolysis manner, showing a promising prospect for sustainable biofuels and chemical production.
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Journal of Energy Storage
·
2023
·
IF 9.4
Yukai Yang,Yongpeng Xia,Fazhan Chen,Yong Zhu,Fen Xu,Lixian Sun,Kostya S. Novoselov,Pengru Huang,Hongge Pan,Huaizhou Lin,Haopan Hu,Lingjun Song,Yuan Gao,Dan Cai,Zhong Cao,Julan Zeng
The development of multifunctional composite phase change materials has emerged as a popular research field to achieve efficient thermal energy storage and management across diverse application scenarios. Herein, a novel flexible reversible thermochromic phase change film (TC-PCMs/nBN/OBC) has been proposed. The film comprises a thermochromic compound, hexagonal boron nitride (h-BN), and olefin block copolymers (OBC), and features a layered structure with h-BN embedded laterally in OBC . This design enhances thermal conductivity and confers reversible thermochromic ability, as well as excellent flexibility. The TC-PCMs/nBN/OBC film can perform multiple functions, including thermal storage, light-to-thermal conversion, and temperature-controlled information storage. Additionally, a sandwich-like structure of the multifunctional smart flexible device (TC-PCMs/10BN/OBC-CC) is fabricated using TC-PCMs/10BN/OBC and conductive cloth via easy layer-by-layer assembly. This flexible device is simple to prepare, retains the excellent comprehensive properties of TC-PCMs/nBN/OBC. Moreover, the presence of conductive cloth enabled this device to achieve good electric-to-thermal conversion efficiency (86.5 %). Overall, the results demonstrate that TC-PCMs/10BN/OBC can meet diverse application requirements.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2023
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IF 5.2
Yuyan Yang,Shaowei Yan,Bin Yu,Chang Gao,Kuan Chang,Jing Wang
Emulsion systems are widely used as carriers for diverse actives processing moisturizing, anti-aging, whitening and other functions. Recently, emulsions containing lamellar gel phase have been attracting more and more research interests since it improves the physical stability of degradable actives. In the present work, o/w emulsions containing lamellar gel phase composed of ceteareth-20 (O-20) and mixed fatty alcohols (FA) were developed for retinyl propionate (RP) stabilization and transdermal delivery . The lamellar gel phase was confirmed by XRD combined with cryo-SEM, and main factors for lamellar gel phase formation were investigated and discussed. Moreover, effects of carrier oil on the emulsion properties were studied and the result showed that introduction of carrier oil benefits RP retention, rheological and transdermal properties. This study proves that O-20/FA based lamellar phase emulsion is promising system for RP stabilization and utilization in cosmetic formulations.
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ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Danping Wang,Chaoying Du,Shuo Wang,Lingxiao Li,Tian Liu,Jiaxuan Song,Zhonggui He,Yinglei Zhai,Bingjun Sun,Jin Sun
Prodrug-based self-assembled nanoparticles combined with the merits of nanotechnology and prodrugs strategies have gradually become a research trending topic in the field of drug delivery. These prodrugs usually consist of parent drugs, connecting bonds, and modifying chains. The influences of the connecting bonds and modifying chains on the pharmaceutical characteristics, in vivo delivery fate, and antitumor activity of prodrug nanoassemblies remain elusive. Herein, three docetaxel (DTX) prodrugs were designed using sulfur bonds (thioether bond or disulfide bond) as connecting bonds and fatty alcohols (straight chain or branched chain) as modifying chains. Interestingly, the difference between connecting bonds and modifying chains deeply influenced the colloidal stability, redox responsive drug release, cytotoxicity, pharmacokinetic properties, tumor accumulation, and antitumor effect of prodrug nanoassemblies. DTX conjugated with branched chain fatty alcohols via disulfide bonds (HUA-SS-DTX) significantly improved the antitumor efficiency of DTX and reduced the systematic toxicity. Our study elaborates on the vital role of connecting bonds and modifying chains in the rational design of prodrug nanoassemblies.
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PubMed
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INTERNATIONAL JOURNAL OF PHARMACEUTICS
·
2022
·
IF 6.51
Liang-Liang Chen,Wen-Pu Shi,Tuo-Di Zhang,Ya-Qing Zhou,Feng-Zhu Zhao,Wan-Yi Ge,Xiao-Qian Jin,Wen-Juan Lin,Wei-Hong Guo,Da-Chuan Yin
Staphylococcus aureus ( S. aureus ) infection, especially its drug-resistant bacterial infection, is a great challenge often faced by clinicians and patients, and it is also one of the most important threats to public health. Finding a safe and effective antibacterial agent is of great significance for the prevention and treatment of S. aureus infection. Lysozyme is known to have antibacterial effects against Gram-positive bacteria including S. aureus . Here, high-quality lysozyme with a purity of more than 99% and an activity of more than 60, 000 U/mg was prepared from egg white, which showed excellent antibacterial activity against three strains of S. aureus , especially against MRSA . Furthermore, an antibacterial cream loaded with lysozyme was prepared and tested in scald wound healing. The lysozyme-loaded cream exhibited the effect of preventing wound infection and promoting wound healing on scalds, and no toxicity was found in animal organs. Overall, lysozyme showed great application potential in the prevention and treatment of infections caused by S. aureus and scalded wound healing. The most remarkable discovery in this work is the unexpectedly powerful inhibitory effect of lysozyme on the drug-resistant bacterial, especially MRSA , which is usually very difficult to deal with using normal antibacterial drugs.
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PubMed
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FUEL
·
2022
·
IF 8.035
Zeng Zhang,Fei Wang,Jianchun Jiang,Hao Zhu,Yuchan Du,Junfeng Feng,Hui Li,Xiaoxiang Jiang
Lipid hydrotreatment to generate green diesel can weaken the dependence on unrenewable fossil fuels. The catalytic performance of Co catalyst is greatly limited by the dispersion and the number of Co active sites. To solve this problem, the Co-Al nanosheet was synthesized by using Co-Al LDH as the precursor. In the fatty acid hydrotreatment at 220 °C, the Co-Al nanosheet attained 98.0 % conversion and 64.3 % alkane yield, much higher than that of the Co/Al 2 O 3 catalyst (83.7 % conversion and 18.7 % alkane yield). From the catalyst characterizations, the excellent activity of Co-Al nanosheet was mainly ascribed to its high Co content and lamellar structure, exposing massive Co sites with high dispersion and small particle size. In addition, the high percentage of weak acidity, strong interaction between support and Co sites, and the improvement of the decarboxylation route also contributed to its catalytic performance. Moreover, the kinetics of octadecanol hydrotreatment over Co-Al nanosheet and Co/Al 2 O 3 revealed that octadecanol hydrotreatment more easily occurred over Co-Al nanosheet regarding the lower activation energy.
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SOLAR ENERGY MATERIALS AND SOLAR CELLS
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2022
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IF 7.305
Ziheng Wu,Zhaochun Ye,Shasha Shi,Yaobing Fang,Li Li,Wenhui Yuan
Shape stability and excellent photothermal conversion performance are critical for composite PCMs in the field of solar energy utilization. This study prepares a nickel and cobalt-based bimetal organic framework (Ni–Co-BTC) which is further employed as the supporting material for 1-octadecanol (OD). The flower-like Ni–Co-BTC with an interconnected network exhibits large specific surface area, pore volume , and appropriate pore size distribution , which is conducive to the encapsulation of OD (up to 70 wt%). In addition, TiN nanoparticles are added to enhance the photothermal conversion performance of composite PCM. Therefore, the obtained OD/Ni–Co-BTC/TiN composite PCM exhibits considerable thermal energy storage capacity (145.8 J/g) and remarkable photothermal energy conversion efficiency (up to 97.75%). Furthermore, the composite PCM has outstanding thermal stability and reliability, and the phase change enthalpy is reduced by only 1.7% after 100 cycles. Accordingly, the composite PCM shows a promising application potential in solar energy harvesting , conversion and storage.
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MOLECULES
·
2022
·Vol. 27
·期 19
·6627
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IF 4.927
Hao Zhang,Lili Liang,Hailing Xi,Datong Liu,Zhanguo Li,Xiaoyan Lin
Compared with polymers and nanoparticles, fatty alcohols can not only increase the stability of foam, but also maintain better foamability at pH < 2, which is beneficial to reduce waste liquid and increase decontamination efficiency for radioactive surface pollution. However, different fatty alcohols have different hydrophobic chain lengths. The effects of fatty alcohols with different chain lengths on the performance of decontamination foam were studied at pH < 2, to assist in the selection of suitable fatty alcohols as foam stabilizers. Combined with betaine surfactant and phytic acid, biomass-based foams were synthesized using fatty alcohols with different chain lengths. When the hydrophobic tail groups of the fatty alcohol and the surfactant were the same, the foam showed the best performance, including the lowest surface tension, the highest liquid film strength, the greatest sag-resistance and the best stability. However, when the hydrophobic tail groups were different, the space between adjacent surface active molecules was increased by thermal motion of the excess terminal tail segments (a tail-wagging effect), and the adsorption density reduced on the gas-liquid interface, leading to increased surface tension and decreased liquid film strength, sag-resistance and stability. The use of decontamination foam stabilized by fatty alcohols with the same hydrophobic group as the surfactant was found to increase the decontamination rate of radioactive uranium pollution from 64 to over 90% on a vertical surface.Keywords:foam decontamination;radioactive pollution;low pH;chain-length matching;biomass-based
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FUEL PROCESSING TECHNOLOGY
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2022
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IF 8.129
Hao Zhu,Fei Wang,Jianchun Jiang,Zeng Zhang,Yuchan Du,Junfeng Feng,Xiaoxiang Jiang
In order to deal with the deficiency of active sites in Ni catalyst, Ni Fe nanosheet (Ni-Fe/Al 2 O 3 -NS) catalyst was synthesized by using Ni-Fe-Al LDH as the precursor. The catalyst was further utilized in the lipid hydrotreatment for green diesel production. With a lamellar structure and large Ni loading (more than 60%), the Ni-Fe/Al 2 O 3 -NS catalyst possessed abundant Ni sties with high dispersion, large surface area, and strong acidity. Moreover, in Ni-Fe/Al 2 O 3 -NS the highly active Ni 3 Fe phase was formed, which promoted the decarbonylation route in hydrotreatment. The Ni-Fe/Al 2 O 3 -NS catalyst achieved 98.7% conversion with 98.1% alkane yield in oleic acid hydrotreatment under very mild conditions (220 °C, 2 MPa of hydrogen pressure, 3 h). The catalytic performance of Ni-Fe/Al 2 O 3 -NS was much higher than traditional Ni-Fe/Al 2 O 3 and other catalysts reported in current related studies.
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Frontiers in Chemistry
·
2022
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IF 5.545
Tan Xiaoke,Zhu Xin,Xu Duanjie,Shi Yanmei,Wang Zhenzhen,Cao Mingzhuo,Hu Kai,Zhao Lingzhou,Zhao Junwei,Miao Mingsan,Zeng Huahui,Wu Xiangxiang
Liposome is a conventional drug delivery system which has been widely used in the pharmacy field. However, its applications are greatly restricted in clinical practice by the disadvantages of cholesterol and nonselective distribution. Herein, a novel platform for anti-tumor drug delivery was developed by incorporating an amphiphilic stachydrine-octadecane conjugate (SS) as the mitochondria-targeting molecule onto the triptolide-liposome surfaces (SS-TP LPs). The polyethylene glycol (PEG) and the suitable particle size (about 133 nm) of liposomes facilitated their stabilities, the long half-life in blood and the escape from the rapid elimination. The SS-TP LPs were internalized and accumulated into the mitochondria of cancer cells in a time-dependent manner, followed by triggering permeabilization of the mitochondrial outer membrane by inhibiting Bcl-2, and then further caused greater cancer cell death via releasing cytochrome C and initiating a cascade of caspase 3 reactions. In the Pan02 tumor-bearing mice, the SS-TP LPs showed significant efficacy in inhibiting tumor growth and reducing tumor size but synchronously exhibited specific mitochondria-targeting and much lower subacute toxicity compared with the free TP and TP LPs. Our study suggests that SS-TP LPs can be a promising anticancer drug delivery system for mitochondria-targeted therapy in pancreatic cancer.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2022
·
IF 7.139
Songyin Yu,Fei Wang,Jianchun Jiang,Xinyi Luo,FeiFei Xing,Taotao He,Junfeng Feng,Xiaoxiang Jiang
The Co catalysts for lipid hydrotreatment into green diesel commonly has a poor dispersion of Co and big Co particle size due to metal agglomeration, limiting its catalytic performance. To solve this problem, three Co catalysts on activated carbon (AC), Al 2 O 3 , and nitrogen-doped carbon (NC) are prepared, among which the Co/NC is synthesized by using the Co metal-organic framework (MOF) as the precursor. In the hydrotreatment of oleic acid , the Co/NC catalyst attained 99.6% conversion and 99.6% alkane yield, much higher than Co/AC (76.8% and 14.9%) and Co/Al 2 O 3 (96.3% and 18.7%). From the characterizations of the catalyst, the excellent performance is ascribed to its lamellar structure , large specific surface area, and high dispersion of Co sites, providing massive Co-active sites for hydrotreatment reaction. Moreover, the catalytic performance of Co/NC under various hydrotreatment temperatures with different feedstocks is investigated.
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APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Yang Li,Wenjing Wei,Jiaqi Chen,Lijie Zu,Yan Zhou,Jinzhu Wu,Xiaohong Wu
In spaceflight applications, molecular contamination control has become one of the most challenging issues. Porous zeolites are a potent molecular adsorbent with advantages of efficient adsorption at low pressure and/or high temperature, high interaction with adsorbates, and superior durability in extreme environments. Herein, zeolite 13X pellets were selected for adsorption of stearyl alcohol (C 18 H 37 OH) as a target molecular contaminant. Considering the excellent hydrophilicity of the zeolite 13X which limits the adsorption of most hydrophobic organic molecules, modification of the zeolite 13X by deposition of TiO 2 via atomic layer deposition (ALD) technology was performed. Results show that ALD-grown TiO 2 not only improves hydrophobicity but also renders high activity, whilst retains the hierarchical pores of the zeolites. As a result, the as-prepared zeolite 13X@TiO 2 exhibits efficient adsorption toward trace stearyl alcohol under low pressure through the synergistic contribution of physisorption and chemisorption. Monte Carlo (MC) simulation, molecular dynamic (MD) and Density Functional Theory (DFT) calculations further discover that pore wall surfaces are primary adsorption sites for the physisorption while ALD-grown TiO 2 provides active sites for the chemisorption.
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危险品化学品经营许可证（带存储）