CRYSTENGCOMM
·
2022
·Vol. 24
·期 22
·4013-4020
·
IF 3.756
Lang Sun,Xintong Xu,Dalin Sun,Shaowen Chu,Jiaqi Chen,Wentao Shi,Juan Lu,Shuangchen Ruan
Analcime (ANA) crystals have wide applications in the field of selective adsorption, nanoelectronics, light gas/hydrocarbon mixture separation, and radioactive element adsorbents. However, many organic templates were necessary to synthesize ANA crystals in previous work, causing significant environmental pollution and high cost. Thus, it is crucial to synthesize single ANA crystals under a simple system without the organic template. Herein, we explore the synthesis of large single ANA crystals (size up to 210 μm) in the template-free system of SiO2 : 0.274Al2O3 : 1.79Na2O : 190H2O at 180 °C for 40 h. The absence of expensive organic templates and hydrofluoric acid (HF) dramatically reduces the costs and pollution. This makes the method more conducive to mass production. Meanwhile, we report a series of growth conditions for ANA crystals with different sizes, which is more conducive for the preparation of the required ANA single crystals for different application scenarios.
研究领域:
材料科学
·
无机化学
·
纳米电子学
·
吸附分离技术
✓ 已验证
DOI
高影响因子
Nanoscale Research Letters
·
2018
·Vol. 13
·期 1
·1-8
·
IF 3.125
Zhang Zhiliang,Jin Hailun,Wu Chenyu,Ji Jianbing
Graphene, a two-dimensional nanomaterial, has shown tremendous promising applications in a broad range of fields. Mass production of defect-free graphene is a prerequisite for its applications. In this work, by using a needle valve, we propose a simple hydrodynamic-assisted exfoliation method to produce high-quality few-layer graphene flakes. The prepared graphene flakes, with an average layer of 5 (~ 71% less than five layers) and a Raman D/G intensity ratio as low as 0.1, are free of defects and oxidation. The average thickness and length of the few-layer graphene flakes are 2.3 nm (~ 90% < 4 nm) and 1.9 μm (~ 50% in the range of 1–7 μm), respectively. In a lab-scale trial, the concentration of graphene can reach 0.40 g/ml under mild operating conditions (working pressure 20 MPa, 16 cycles), and the corresponding production rate is 0.40 g/h. The hydrodynamic-assisted exfoliation by needle valve potentially offers a simple and efficient method for large-scale production of high-quality graphene.
研究领域:
纳米材料科学
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材料化学
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化学工程
·
二维材料
·
工业催化
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2020
·
IF 7.489
Huateng Li,Pan Wu,Guowei Zhao,Jia Guo,Changchun Wang
Hypothesis Polymer photonic crystals have drawn a lot of interest due to cost-effective fabrication. Although tremendous efforts are tried, almost no large-size photonic crystal (PC) films can be obtained due to different kinds of reasons. The main issues are the tedious process and strict preparation conditions (like high temperature and solvents), sometimes the limitation of the machinery equipment, accordingly they are not conducive to preparation of subsequent large-scale PC films. Hence, there is an urgent desire to develop a technique that can assemble polymer PC films in a large scale at low temperature without solvent. Experiments Through semi-continuous emulsion polymerization, core-interlayer-shell (CIS) colloidal particles (PS@PEA@P2EHA) were synthesized with the output of 240 g/h. After the successful production of polymer PC films in the laboratory at room temperature, industrial roll-to-roll process was used for large-scale production of the PC films. Findings By introducing poly(2-ethylhexyl acrylate) which has quite low glass transition temperature (T g ) into the shell, we have successfully developed an energy-efficient technique for fabrication of large-area (over 100 m 2 ) polymer PC films at ambient temperature for the first time. This technique has great potential to promote the industrial application of PC films, such as display, sensors, anti-counterfeiting and so on.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2018
·Vol. 24
·期 71
·19060-19065
·
IF 5.16
Chunli Zhu,Haijing Shen,Haoyang Liu,Xiaobo Lv,Zhihao Li,Quan Yuan
Graphical Large-scale 2D α-In 2 Se 3 nanosheets were prepared by a solvent exfoliation technique. The obtained α-In 2 Se 3 nanosheets exhibit excellent near-infrared (NIR) photothermal performance under an 808 nm laser irradiation, which leads to a significant antibacterial effect. The excellent photothermal performance highlights the potential application in chemical and biological fields of α-In 2 Se 3 nanosheets. Two-dimensional (2D) nanoflakes represent an appealing class of materials for optoelectronics applications due to their unique layered structures and excellent electronic properties. However, the lack of easy-to-manipulate and effective methods for large-scale production of these 2D materials limits their potential for applications. Also, few efforts have been made to explore their applications in biological fields. This work reports the preparation of large quantities of 2D In 2 Se 3 nanosheets through a solvent exfoliation technique. Transmission electron microscopy and atomic force microscopy results show that the In 2 Se 3 nanosheets are obtained with lateral sizes of tens of nanometers to hundreds of nanometers and thickness of 2–17 layers. Raman features coupled with the X-ray diffractometry results unequivocally confirm the as-prepared In 2 Se 3 nanosheets to be α phase. Moreover, these α-In 2 Se 3 nanosheets exhibit an excellent near-infrared (NIR) photothermal performance under an 808 nm laser irradiation. NIR photo-excitation of the α-In 2 Se 3 nanosheets in the presence of bacteria leads to a significant antibacterial effect, suggesting that these nanosheets have great potential to be photothermal antibacterial agents. Our work on α-In 2 Se 3 nanosheets presents an available method for exfoliating 2D layered materials, and highlights the potential application in chemical and biological fields of α-In 2 Se 3 nanosheets.
研究领域:
材料科学
·
纳米技术
·
生物医学工程
·
光电
✓ 已验证
DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Zhichen Liu,Tiantian Xiao,Xinru Wu,Cejun Hu,Xue Feng Lu,Hongwei Zhang,Jiujun Zhang,Xiaojun Bao,Pei Yuan
2,5-Furandicarboxylic acid (FDCA), a crucial precursor for synthesizing biodegradable polymers as a sustainable alternative to petroleum-derived plastics, has garnered significant interest for its production via electrolysis. However, this approach remains hindered by the inherent weak reactant-catalyst adsorption and sluggish interfacial kinetics. Herein, we report Cu-incorporated NiFe Prussian blue analogues (PBA) that enable rapid electrooxidation of 5-hydroxymethylfurfural (HMF) to FDCA with nearly 100 % conversion, selectivity, and Faradaic efficiency, even at an industrial-scale concentration of 100 mM. In situ Raman and electrochemical characterizations reveal that Cu-incorporation elongates Ni-N bonds and accelerates their reconstruction into defect-rich Ni 2+ -OH species, which undergo deprotonation to form highly active Ni 3+ -O species. X-ray technology and theoretical calculations show that the electronegative Cu 2+ prompts a shift of the d-band center of neighboring Ni atoms toward the Fermi level, thereby enhancing the adsorption of both hydroxyl (-OH) and aldehyde (-CHO) groups in HMF and thus accelerating electrooxidation of HMF to FDCA. Practical applicability using a continuous flow electrolyzer demonstrates the potential for industrial application, achieving a kilogram-scale FDCA production with 99 % purity and a yield exceeding 90 % over 1200 h. This work realizes the valence regulation of active sites in PBA through a cation engineering approach and verifies its feasibility in sustainable biomass electro-oxidation upgrading.
研究领域:
电化学
·
生物质转化
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材料科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
Green Chemistry Letters and Reviews
·
2024
·
IF 5.8
Lingling Tang,Jiali Shao,Hanxue Zheng,Jixuan Chen,Guohua Xia,Huan Yang,Yaya Yang,Yuping Shen
Baicalein, usually obtained after the removal of 7-O-β-D-glucuronic acid from baicalin, has strong pharmacological activity. In this study, a novel strategy for efficient and eco-friendly preparation of baicalein was established by high-temperature-little-acid hydrolysis of baicalin. The effects of inorganic acids, solvents, solid–liquid ratio, HCl concentration and hydrolysis duration on the yield of baicalein were investigated by one-factor-at-a-time experiment. Then, an orthogonal experiment design was conducted for the optimal hydrolysis conditions, namely, baicalin was boiled in n-BuOH solution containing 0.50% HCl (w/v) at 130°C for 2.0 h with solid–liquid ratio at 1:25 (g/mL). In the 60-fold scale-up experiment, the yield of baicalein was achieved at 83.5% ± 6.3%, and its purity was increased from 74.2% to 98.7% after purification. Compared with reported methods, acid consumption per unit product of the newly developed strategy was approximately 80 times lower than that of conventional acid hydrolysis, and time consumption was substantially reduced. Overall, the novel strategy showed great prospects for a cleaner large-scale production of baicalein, which provides a new alternative desirable for the preparation of natural products with high efficiency and low consumption in the pharmaceutical industry.
研究领域:
药学
·
化学工程
·
天然产物化学
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2018
·
IF 5.116
Yuanguo Wu,Xingbao Zhu,Weihua Wan,Yu Wang,Xin Ji,Xingyu Pan,Zhe Lü
In this study, we report an eco-friendly and cost-efficient cathode based on sucrose-derived active carbon (SDAC). Ni(NO 3 ) 2 is then co-impregnated into the cathode, which is designed to form a hierarchical pore architecture inside the SDAC that takes into account both the mass transport process of O 2 /Li + and the accommodation of discharge product (Li 2 O 2 ). Another feature of the cathode is binder-free that circumvents the aggregation of the cathodic active materials and the three-phase boundaries loss. This study is aimed to provide a feasible reference plan to give common cathode substrates an additional capability to catalyze electrochemical reactions without destroying its pristine structure and mission. A lithium–oxygen battery with the cathode delivers a high capacity of 24500 mAh g −1 at 200 mA g −1 in a 1 M LiTFSI/TEGDME electrolyte system. Moreover, the cathode exhibits a pretty good stability in a long-term round-trip test of 1000 cycles. These results suggest that the SDAC with a hierarchical pore structure has the potential to be used in next-generation lithium–oxygen batteries in a facile and cost-efficient manner, moreover, the proposed convenient method is worth applying and popularizing as it can transform even the most mundane into the spectacular.
研究领域:
电化学
·
能源材料
·
纳米材料
·
电池技术
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可持续能源
·
多孔材料
·
电催化
✓ 已验证
DOI
高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
·
2025
·
IF 6.6
Ding An,Wenjing Chen,Hongshan Liang,Jing Li,Peiyuan Zhou,Bin Li
The high viscosity of psyllium seed husk polysaccharide (PSHP) significantly restricts the solid-liquid ratio during the extraction process, especially in large-scale manufacturing operations. In this study, an efficient extraction method for PSHP using low-concentration ethanol at high temperatures was developed. The results demonstrated that the solid-liquid ratio for total ethanol-water extracted polysaccharide (TEP) extraction using 25 % ethanol was 8:200, which is sevenfold higher than that of the traditional hot water extraction method. The results of the structural characterization demonstrated that TEP preserved the integrity of its molecular structure and exhibited a high molecular weight of 2587 kDa. Furthermore, the conformational and rheological analyses revealed that the substantial contraction of molecular chains in the presence of ethanol resulted in a reduced viscosity of TEP across a broad temperature range, thereby ensuring high efficiency of the extraction process. Therefore, this method preserves the integrity of the TEP molecular structure while enhancing the extraction efficiency, demonstrating considerable potential for large-scale TEP production.
研究领域:
食品科学
·
天然产物化学
·
高分子材料科学
·
生物化工
·
药用植物资源开发
✓ 已验证
产品关联
DOI
高影响因子
Nature Catalysis
·
2025
·
IF 44.6
Ren Yue,Kong Wei,Li Yang,Zhan Wang,Zhang Chunyu,Miao Yuhang,Yao Bingxin,Li Shengnan,Li Zhenhua,Liu Xiang,Zhan Sheng,Zhou Hua,Shao Mingfei,Duan Haohong
Aqueous electrolysis offers a potential sustainable route for converting biomass derivatives to plastic monomers, such as 5-hydroxymethylfurfural oxidation to 2,5-furandicarboxylic acid (FDCA). However, selective electrosynthesis of high-concentration FDCA at kilowatt scale and ampere-level current density remains an unmet challenge, hindering commercialization. Here we show an engineered solid polymer electrolyte (SPE) reactor to steer Faradaic and non-Faradaic side reactions, achieving FDCA production at an industrially relevant current density (1.5 A cm −2 ) while maintaining high selectivity (97.0%), Faradaic efficiency (88.2%) and concentration (~1.24 M). The stability of the SPE reactor was demonstrated in continuous operation at 0.5 A cm −2 over 140 h. Moreover, a 4.3-kW electrochemical platform was constructed with a scale-out strategy, reaching a pilot-scale FDCA production rate (33 kg per day). This work shows the capability of reactor engineering to enable selective and large-scale production of sustainable chemicals via electrochemical processes.
研究领域:
电化学
·
化学工程
·
可持续化学
·
材料科学
·
工业化学
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2024
·
IF 5.6
Changwei Tang,Zilong Yang,Changle Li,Jiawei Liu,Quan Bai
The polymerization-induced colloid aggregation (PICA) method is commonly used to create SiO 2 @SiO 2 core–shell silica microspheres (CSSMs), but it often encounters challenges such as incomplete shell coating and poor reproducibility. In this paper, the formation mechanism of the silica shell layer during the preparation of SiO 2 @SiO 2 CSSMs using the PICA method was investigated. It was found that ureido modification can reduce the Zeta potential of the silica core surface, facilitating the deposition of coacervates formed by urea-formaldehyde resin (UF) and silica nanoparticles on the silica core surface to form the SiO 2 shell layer when the Zeta potential of the surface is in the range of −20.1 mV to −4.8 mV. By controlling the interfacial state and surface potential of the SiO 2 core, the issue of inconsistent reproducibility in preparing SiO 2 @SiO 2 CSSMs can be overcome. Furthermore, optimization of experimental parameters such as pH, reaction temperature, water content, and reaction time can enhance the formation process. The thickness of the shell and pore size of CSSMs can be successfully adjusted by varying the reaction time and the particle size of colloidal silica sol, respectively. With optimal conditions, the semi-scale production yield of SiO 2 @SiO 2 CSSMs can be increased to 50 g. The SiO 2 @SiO 2 CSSMs were modified with octadecyltrichlorosilane (ODS) to be used as stationary phases in reversed phase liquid chromatography (RPLC) for fast separation of small solutes, peptides, and proteins. The superior separation efficiency indicates that the improved PICA method has the potential to be utilized as an alternative to the layer-by-layer method for large-scale production of SiO 2 @SiO 2 CSSMs.
研究领域:
材料科学
·
化学工程
·
分析化学
✓ 已验证
DOI
PubMed
高影响因子
Small
·
2024
·
IF 13
Lechuan Hu,Chengchao Wang,Haojun Zhu,Yan Zhou,Haizeng Li,Linhua Liu,Lanxin Ma
The architectural window with spectrally selective features and radiative cooling is an effective way to save building energy consumption. However, architectural windows that combine both functions are currently based on micro-nano photonic structures, which undoubtedly hinder their commercial application due to the complexity of manufacture. Herein, a novel tunable visible light transmittance radiative cooling smart window (TTRC smart window) with perfect near-infrared (NIR) shielding ability is manufactured via a mass-producible scraping method. TTRC smart window presents high luminous transmittance ( T lum = 56.8%), perfect NIR shielding ( T NIR = 3.4%), bidirectional transparency adjustment ability unavailable in other transparent radiative coolers based on photonic structures (Δ T lum = 54.2%), and high emittance in the atmospheric window (over 94%). Outdoor measurements confirm that smart window can reduce 8.2 and 6.6 °C, respectively, compared to ordinary glass and indium tin oxide (ITO) glass. Moreover, TTRC smart window can save over 20% of annual energy in the tropics compared to ITO and ordinary glass. The simple preparation method employed in this work and the superior optical properties of the smart window have significantly broadened the scope of application of architectural windows and advanced the commercialization of architectural windows.
研究领域:
材料科学
·
能源效率
·
建筑工程
·
光学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2024
·
IF 8.5
Yu-Fan Zhan,Zhuo-Hao Meng,Cheng-Hai Yan,Min Tan,Marriam Khurshid,Yi-Jiangcheng Li,Shao-Jun Zheng,Jun Wang
Enzymatically modified isoquercitrin (EMIQ) is a glyco-chemically modified flavonoid exhibiting notably high biological activity, such as antioxidant, anti-inflammatory and anti-allergic properties. However, the utilization of expensive substrates such as isoquercitrin and cyclodextrin in the conventional approach has hindered the industrial-scale production of EMIQ due to high cost and low yields. Hence, the development of a cost-effective and efficient method is crucial for the biological synthesis of EMIQ. In this study, a natural cascade catalytic reaction system was constructed with α -L-rhamnosidase and amylosucrase using the inexpensive substrates rutin and sucrose. Additionally, a novel approach integrating gradient temperature regulation into biological cascade reactions was implemented. Under the optimal conditions, the rutin conversion reached a remarkable 95.39% at 24 h. Meanwhile, the productivity of quercetin-3- O -tetraglucoside with the best bioavailability reached an impressive 41.69%. This study presents promising prospects for future mass production of EMIQ directly prepared from rutin and sucrose.
研究领域:
生物技术
·
生物化学
·
药学
·
食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）