SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Xinyi Wang,Qinrui Chen,Juanjuan Wen,Chengyu Nie,Wei Ke,Xiaowei Da,Xianfu Chen,Minhui Qiu,Yiqun Fan
Long-chain dicarboxylic acids (LCDAs) are important basic chemical raw materials, and their bio-synthesis has gained increasing prominence in recent years. However, the pigments formed during the biological process have a significant impact on the purity of the product. In this study, a TiO 2 -ZrO 2 ceramic nanofiltration (NF) membrane with tunable pore size was developed and used for efficient decolorization of LCDA fermentation broth. Based on the inhibitory effect of Ti doping on ZrO 2 phase transition, combining the steric hindrance effect of organic residues, NF membranes with regulable molecular weight cut-off (600/1100/1600 Da) can be achieved by controlling calcination temperature in range of 350–450 ℃. They all have a rejection of over 98.8 % for the larger molecular weight pigments (DY9, AY3 and AY23), and the rejection for the smaller SY pigment is also above 90 %. In addition, the NF membranes exhibited excellent performance in crude sebacic acid aqueous solution. With a sebacic acid salt rejection of less than 5 % and a pigment rejection of over 90 %, they achieved simultaneous efficient decolorization and product recovery. Finally, the multi-channel NF membrane prepared at 400 ℃ calcination temperature achieved excellent decolorization performance in the real dodecanedioic acid fermentation broth, increasing the purity of acid after acidification crystallization from 98.62 % to 99.56 %. This verified its application potential in the industrial treatment of LCDA fermentation broth.
研究领域:
材料科学
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化学工程
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膜分离技术
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生物化工
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纳米材料
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环境工程
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
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2025
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IF 4.7
Xinyu Han,Bo Yang,Wanqi Chen,Ruolan Tang,Song Li,Haile Yan,Liang Zuo
Solar-driven interfacial water evaporation desalination has emerged as a promising approach to address the global freshwater scarcity. However, fogging on transparent plates caused by condensation during freshwater collection obstructs light transmission, thereby reducing evaporation efficiency. To overcome this challenge, in this work, we integrated a super-hydrophilic TiO 2 –SiO 2 composite coating onto the transparent glass plates used in the solar-driven interfacial water evaporation desalination system. We systematically optimized the TiO 2 to SiO 2 ratio and synthesis process, and analyzed their anti-fogging performance as well as the photo-induced hydrophilicity mechanisms. The TiO 2 –SiO 2 composite coatings demonstrated remarkable effectiveness in suppressing fogging and enhancing system performance. Notably, the TiO 2 -60 % coated sample exhibited outstanding properties, achieving a water contact angle (WCA) of 2.1° after illumination. Even after 30 days of dark storage, the WCA increased only modestly to 27.8°, but rapidly recovered to a super-hydrophilic state of 7.9° upon re-exposure to light. Additionally, the coating maintained an average transmittance of 92.31 % across the 400–1100 nm wavelength range, surpassing that of bare glass (91.58 %) and ensuring optical clarity throughout a 108-h simulated solar evaporation test. This study not only establishes a theoretical framework for designing self-cleaning anti-fog coatings but also introduces innovative strategies to enhance the efficiency of solar-driven water evaporation technologies.
研究领域:
材料科学
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环境工程
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可再生能源
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表面工程
✓ 已验证
产品关联
DOI
高影响因子
Nature Synthesis
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2025
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IF 20
Wang Ruizhao,Dai Jie,Zhao Long,Hu Zhiwei,Chen Chien-Te,Kuo Chang-Yang,Zhan Guangming,Shi Yanbiao,Wang Jiaxian,Zou Yunjie,Xu Mingkai,Zou Xingyue,Zheng Qian,Zhou Bing,Wang Kaiyuan,Zhao Rui,Zhang Yan,Shen Yunhao,Yao Yancai,Zhang Lizhi
Electrochemical O 2 activation offers a green approach for efficient synthesis of singlet oxygen ( 1 O 2 ). However, it is commonly determined by adsorption-dependent O 2 activation and transformation and can suffer from the sluggish desorption of surface-bound *OOH. Here we report an adsorption-independent O 2 activation pathway for 1 O 2 electrosynthesis via an O 2 mono-hydrogenation process on compressive-strained rutile TiO 2 (CSR-TiO 2 ). This CSR-TiO 2 achieved an 1 O 2 generation rate of 148.26 μmol l −1 min −1 with near 100% Faradaic efficiency, outperforming the strain-free counterpart (35.97 μmol l −1 min −1 ) and other previously reported materials. Such superior performance of CSR-TiO 2 stemmed from compressive strain, which can suppress the formation of reductive unsaturated sites for the O 2 adsorption and enhance the reductive ability of atomic hydrogen (H*), favouring the O 2 mono-hydrogenation pathway and bypassing the traditional surface-bound *OOH desorption pathway. The generated 1 O 2 could be utilized for the selective oxidation of thioanisole and its derivatives, offering a promising strategy for green organic synthesis.
研究领域:
材料科学
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电化学
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绿色合成
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2025
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IF 21.1
Yufan Jiang,Yanfei Zheng,Cangpeng Shan,Ning Hou,Hao Wang,Qinwei Jia,Rui Han,Qingling Liu,Weichao Wang
Catalytic hydrolysis reaction is an effective technology for treating industrial waste gas carbon disulfide (CS 2 ). However, catalyst deactivation caused by passivation of active sites and sulfate-induced sulfur poisoning remains a key obstacle to this technology. Here, a ternary composite system of Ti 0.05 Ce 0.8 La 0.2 O x was successfully constructed. Titanium dioxide (TiO 2 ) was incorporated into the Ce 0.8 La 0.2 O x solid solution through mechanical grinding. The Ti 0.05 Ce 0.8 La 0.2 O x catalyst achieved the complete conversion of CS 2 at 140 °C and maintained stable performance within 320 h of continuous operation, which was significantly superior to the Ce 0.8 La 0.2 O x catalyst and previous reports. The research found that the incorporation of TiO 2 increased the diversity and density of surface hydroxyl groups (-OH), promoting the adsorption and dissociation of CS 2 . Meanwhile, it induced more lattice distortions, significantly increasing the concentration of oxygen vacancies in the catalyst and providing efficient active sites for the dissociation of water molecules (H 2 O). Importantly, the weak acidity of TiO 2 effectively regulates the distribution of basic sites on the catalyst surface, thereby reducing H 2 S adsorption and oxidation side reactions, and simultaneously inhibiting the irreversible accumulation of sulfates/sulfides. Therefore, this study provides valuable insights for the development of industrial-grade long-lasting organic sulfur hydrolysis catalysts.
研究领域:
催化化学
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环境工程
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材料科学
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工业催化
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无机化学
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
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2025
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IF 3.9
JunZheng Chen,Xue Lv,Yanmin Ma,Wang Xu,Shurui Yi,Di Fang
Photocatalytic technology has attracted great attention in environmental treatment in recent years due to its environmental friendliness. However, the commonly used photocatalyst TiO2 cannot effectively utilize visible light due to its wide bandgap, and the difficulty in recycling the powder catalyst limits the further development of photocatalysis. In this paper, we report a novel PVDF membrane loaded with TiO2/GN/Ag NWs for photocatalytic degradation of MB dye wastewater in the presence of SA by simple vacuum filtration of the photocatalysts loaded on the PVDF membrane, the addition of GN and Ag NWs successfully shortened the band gap of the PVDF/SA/TiO2 membrane (3.2 eV) to that of the PVDF/GN/SA/TiO2/Ag12 membrane (2.6 eV), which effectively enlarged the utilization of TiO2 for visible light and demonstrated efficient and stable photocatalytic degradation of MB dye wastewater under simulated sunlight, and furthermore, the removal efficiency of MB dye wastewater was still maintained at 86% after 5 cycles. This work provides a possibility for the application of TiO2-based PVDF membranes in the photocatalytic degradation of dye wastewater.
研究领域:
环境科学
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材料科学
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化学工程
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纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2026
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IF 4.7
Xiaojun Wen,Lei Liao,Yi He,Yingrong Jin,Ping Ren,Liang He,Changjie Jiang,Wei Yuan
Composite photocatalysts with Z -scheme and S-scheme heterojunctions show promising application potential, yet their synthesis remains challenging due to immature construction techniques. In this study, commercial TiO 2 and calcined Bi 2 O 3 were used as raw materials. By regulating the oxygen vacancy concentration on the surfaces of TiO 2 and Bi 2 O 3 nanoparticles, and thereby modulating the surface energy levels of the TiO 2 and Bi 2 O 3 particles, a TiO 2 /Bi 2 O 3 composite photocatalyst with a Z -scheme heterojunction was constructed via a hydrothermal method. The results indicate that the metallic bismuth formed during hydrothermal treatment bridges Bi 2 O 3 and TiO 2 . At a Bi 2 O 3 -to-TiO 2 mass ratio of 9:100 (sample TB9), the composite catalyst achieves 99.5% degradation of methylene blue and retains excellent stability over five cycles. This work proposes a strategy for constructing heterojunction photocatalysts by modulating surface energy levels, offering a novel approach for developing efficient photocatalytic materials.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materiomics
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2024
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IF 8.4
Zhenfeng Guo,Ze Zhu,Xiaoqian Zhang,Ying Peng,Ziting Huang,Xinqiang Wang,Luyi Zhu,Yongshuai Xie,Guanghui Zhang,Benxue Liu,Dong Xu
High-performance thermally insulating ceramic materials with excellent mechanical and thermal insulation properties are essential for thermal management in extreme environments. In this work, SiO 2 was introduced into the crystalline lattice and grain boundary of TiO 2 to inhibit its phase transition and grain growth. Meanwhile, layered TiO 2 /SiO 2 nanofiber membranes (TS NFMs) were designed and prepared. The TS NFMs had lightweight (44 mg/cm 3 ), high tensile strength (4.55 MPa), ultra-flexibility, and low thermal conductivity (31.5 mW·m −1 ·K −1 ). The prepared TS-1100 NFMs had excellent buckling fatigue resistance, which could undergo 100 buckling-recovery cycles at up to 80% strain. Low density and high diffuse reflectance endow the TS NFMs with excellent thermal insulation effects. A single-layer nanofiber membrane was composed of multiple layers of nanofibers. According to the principle of multi-level reflection, the multilayer structure had a better near-infrared reflection effect. Through the stacking effect of layers, a 10 mm thick sample composed of about 300 layers of nanofiber membranes could reduce the hot surface temperature from 1,200 °C to about 220 °C, demonstrating an excellent comprehensive thermal insulation effect. The layered TS NFMs with ultra-flexibility, high tensile strength and high-temperature resistance (1,100 °C) provide a dominant pathway in producing materials in extremely high-temperature environments.
研究领域:
材料科学
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热管理工程
✓ 已验证
DOI
高影响因子
ACS Nano
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2013
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IF 12.062
Nailiang Yang,Yuanyuan Liu,Hao Wen,Zhiyong Tang,Huijun Zhao,Yuliang Li,Dan Wang
The chemical structure and electronic properties of two-dimensional (2D) carbon-supported TiO2, TiO2–graphdiyne, and TiO2–graphene composites have been studied by first-principles density functional theory. Calculation results show that TiO2(001)–graphdiyne composites possess superior charge separation and oxidation properties, having the longest lifetimes of photoexcited carriers among all of the 2D composites containing TiO2 of different facets. Our experimental results further proved that TiO2(001)–graphdiyne composites could be a promising photocatalyst. For photocatalytic degradation of methylene blue, the rate constant of the TiO2(001)–graphdiyne composite is 1.63 ± 0.15 times that of the pure TiO2(001) and 1.27 ± 0.12 times that of the TiO2(001)–graphene composite.
研究领域:
材料科学
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理论化学
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环境科学
✓ 已验证
DOI
高影响因子
HIGH PRESSURE RESEARCH
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2014
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IF 0.926
Qiming Wang,Duanwei He,Fang Peng,Li Lei,Lun Xiong,Pei Wang,Jing Liu
The pressure transmitting medium (PTM)-dependent structure stability of ∼12 nm nanoanatase TiO2 under high pressure has been investigated using in situ synchrotron X-ray powder diffraction techniques at room temperature. We found that the starting anatase phase (I41/amd) transforms into the monoclinic baddeleyite phase (P21/c) regardless of embedded in PTM or not. However, the beginning and ending pressure for the transformation under quasihydrostatic compression is found to be ∼7 GPa higher than that of under nonhydrostatic compression, and amorphization of sample occurs more easily during the former condition. This result indicates that the interface energy between the PTM and nanoparticles undoubtedly modifies the phase stability during high pressure experiments.
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2021
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IF 5.316
Shuqing Ren,Yuehua Wen,Huiling Chen,Pan He,Chunze Ma,Chenyang Zhang,Meng Li,Dongmei Han
Improving the cycling performance without sacrificing its capacity is challenging for high-voltage LiNi 0.5 Mn 1.5 O 4 cathode due to the trade-off nature among the key properties. A self-polymerization process of dopamine was utilized to grow polydopamine (PDA)-nano titanium dioxide assembly. PDA@TiO 2 composite was demonstrated to be integrated with the particles of high-voltage spinel LiNi 0.5 Mn 1.5 O 4 cathodes via wet chemical method . PDA@TiO 2 decorated LNMO improved the long-term cycling performance and rate capability by suppressing detrimental side reactions in balancing the interfacial stability and Li + diffusion kinetics of LNMO and consequently providing efficient conductive pathways. As a result, 2% PDA@TiO 2 modified LNMO cathode exhibited the high reversible capacity of 117 mAh g −1 after 1000 cycles with good capacity retention of 90.7% at 1 C, and superior rate capability (78.5 mAh g −1 at 5 C) at room temperature. Remarkably, a significant improvement in cycling stability at an elevated temperature (50 °C) was obtained for the PDA@TiO 2 -LNMO composite, giving a capacity retention of 93% after 100 cycles at 1 C. The mechanism of performance improvement could be attributed to the maintenance of the structural stability of LNMO cathode materials and the enhanced kinetics of the remarkable lithium-ion diffusion through the protective effect of PDA@TiO 2 decorating.
✓ 已验证
DOI
高影响因子
TALANTA
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2016
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IF 4.035
Na Bin,Weili Li,Xuehua Yin,Xiaohua Huang,Qingyun Cai
A novel electrochemiluminescence (ECL) aptasensor was proposed for ultrasensitive detection of cytochrome c (cyt c) using CdS:Mn quantum dot-modified TiO 2 nanowires (NWs) as electrode. The Mn-doped CdS was deposited on the TiO 2 NWs by successive ion layer adsorption and reaction (SILAR) as ECL emitter, on which thiol-modified aptamer of cyt c was attached via Cd–S bond. Due to the high photo-electrical transfer efficiency, the as-prepared aptasensor shows high selectivity and sensitivity towards cyt c with a detection limit of 9.5 fM and a linear range from 50 fM to 125 pM.
✓ 已验证
DOI
高影响因子
Desalination and Water Treatment
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2024
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IF 1
Huiming Zeng,Liang Lv,Rui Fan,Yulin Wang,Xiaoli Shen,Jianjun Chen,Jianguang Li
Photocatalytic degradation by ultraviolet (UV)/TiO 2 combined with Fenton reagent was employed in treating high concentration n-propanol solution. The influence of the TiO 2 dosage, the concentration of ferrous ion, the integral H 2 O 2 dosage and the optimizing H 2 O 2 adding program were investigated by a series of batch experiments. The increasing injection of the hydrogen peroxide during the reaction will make the reaction rate constant (k 1 ) 6.9% higher than the average injection when the integral H 2 O 2 dosage is fixed. The optimized parameters of the combined process can be listed as follow: [Fe 2+ ] was 0.30 g/L, [TiO 2 ] was 0.08 g/L, and average [H 2 O 2 ]b was 3.85 g/L (which was divided into six different parts, and the increasing gradient was 5%). After 6 h degradation under the ultraviolet (UV) photocatalytic irradiation, more than 88% removal of n-propanol was observed. When the wastewater is treated with the combined process, the degradation of n-propanol can be taken as the pseudo-first order reaction. Based on the experimental data, a semi-empirical model for estimating the reaction rate constant k 1 in cylindrical reactor was built, which will help to investigate the effect of system parameters and support further engineering design.
✓ 已验证
DOI
高影响因子
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