CLAY MINERALS
·
2026
·
IF 2.1
Sisi Hu,Xiangwei Zhang,Jielong Cao,Qingze Chen,Runliang Zhu
The reduction of volatile organic compounds (VOCs), especially the oxidation of highly toxic and chemically resistant toluene, remains a challenge in environmental catalysis. In this research, a porous TiO2/SiO2 support was initially fabricated through titanium pillaring of montmorillonite and then calcined and acid-leached as an efficient platform for Pt nanoparticle immobilization to yield Pt–TiO2/SiO2. The experimental data showed that the catalyst loaded with 0.37 wt.% Pt (0.37Pt–TiO2/SiO2) exhibits superior toluene oxidation performance, reaching a T90 of 190°C. Moreover, the catalyst exhibited remarkable water resistance, maintaining high efficiency even in the presence of 10% water vapour and outstanding long-term stability, with no substantial deactivation after 48 h of continuous operation. The performance improvement is explained by the high dispersion of Pt nanoparticles on the support and the metal–support interaction between Pt and TiO2, characterized by electron transfer from TiO2 to Pt. This interaction facilitates the adsorption and activation of reactant molecules. In situ diffuse reflectance Fourier-transform infrared spectroscopy explained the catalytic mechanism: toluene is sequentially transformed into benzyl alcohol, benzaldehyde and benzoate intermediates, which are subsequently converted to maleic anhydride by opening the ring and eventually mineralized into CO2 and H2O. This work developed a high-performance, durable catalyst using cost-effective and abundant natural minerals, offering promising prospects for practical abatement of industrial VOCs.
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Tong Chen,Shasha Feng,Xiao Shen,Feng Zhang,Zhaoxiang Zhong,Hongmiao Wu,Weihong Xing
This study presents a highly effective FOTS-TiO 2 @SiO 2 Nano fibrous membrane (NFM) with super-amphiphobic properties for oil aerosol purification. The membrane was fabricated by modifying the surface roughness of electrospun SiO 2 NFM with a uniform array of TiO 2 nanocones, followed by surface energy modification using 1H, 1H, 2H, 2H-perfluorooctyltrimethoxysilane (FOTS). The NFM exhibited exceptional contact angles towards both water (167.9°) and n-hexadecane (154.7°) as well as extremely low oil adhesion (38.7 μN). At a gas velocity of 3.2 m/min, the NFM demonstrated excellent oil aerosol separation performance, with a filtration efficiency of 99.87 % and a resistance of 10.0 kPa. The amphiphobic NFM also exhibited a good regeneration ability, with higher efficiency than SiO 2 NFM after three rounds of filtration. These results suggest that the FOTS-TiO 2 @SiO 2 NFM has promising potential for cleaning oil-bearing gas.
研究领域:
材料科学
·
环境工程
·
纳米技术
·
膜技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Muhammad Shoaib,Shengyuan Xu,Haocheng Zhai,Qihui Sun,Shahab Ahmad,Maysam alsharawneh,Yifan Liu,Yang Guo,Xinyu Mu,Wei Tian,Xian Jian
An ideal and distinctive microwave-absorbing carbon-based material feature an eco-friendly, low-cost fabrication process combined with high loss efficiency and strong absorption potential. Here we design an innovative nanohybrids with carbon nano onion (CNO) from paraffin ultra-pure lamp oil by flame method awning unique structure to boost up the dielectric loss. And TiO 2 is introduced for efficient microwave absorption loss through an in-situ process using C 7 H 8 O and TiCl 4 , while SiO 2 plays a critical role in controlling the dielectric constant through the use of tetraethyl orthosilicate (TEOS). To boost up the nanohybrids effective loss mechanism the material is exposed to a carbon capsule (CC) utilizing acetylene (C 2 H 2 ) as a carbon source for 5 minutes under argon to prepare CNO/TiO 2 /SiO 2 /CC nanohybrids. The nearby dual-nanocarbon forms multi-level interfaces enhancing the multi-level rebound and microwave absorption of the microwave interfaces. The as-designed CNO/TiO 2 /SiO 2 /CC has effective minimum reflection loss (RL min ) value of -54.4 dB and the maximum effective absorption bandwidth (EAB max ) of 5.5 GHz at a thickness of 1.9 mm. It also has good thermal conductivity. Hence, this work confirms that high-performance nanohybrids derived from paraffin ultra-pure lamp oil are promising candidates, providing a novel approach for the design and development of carbon-based microwave absorbers.
研究领域:
材料科学
·
电磁学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Xibo Du,Zhangyang Xu,Jielei Tu,Jiahui Hou,Jiancheng Cui,Lingfu Kong,Lingxi Lei,Shengyao Huang,Kangyong Liu,Mengxing Li
Oxide composite coatings with tunable refractive index, high optical transparency and self-cleaning functionality are important for advanced glass-based optical and photovoltaic applications. In this work, TEOS-regulated TiO 2 @SiO 2 interfacial coatings were fabricated by a sol–gel dip-coating route to construct multifunctional antireflective coatings for photovoltaic glass. The effect of TEOS content on the SiO 2 shell/network formation around TiO 2 nanoparticles was systematically investigated. Increasing TEOS content improved particle dispersion, promoted TiO 2 @SiO 2 interfacial construction, reduced coating roughness and tuned the effective refractive index from 2.19 to 1.47. Based on this interfacial regulation, a three-layer coating consisting of a TiO 2 @SiO 2 bottom layer, a hybrid intermediate layer and an HMDS-modified SiO 2 top layer was designed as a multilayer optical architecture with sequential refractive-index variation. The optimized coating exhibited an average transmittance of 96.50% over 380–1800 nm. In addition, the TiO 2 -containing interfacial layer endowed the coating with photocatalytic self-cleaning behavior, enabling optical recovery after methylene-blue contamination under UV irradiation. An accelerated thermal-cycling aging test conducted in accordance with the relevant IEC 61215 procedure, together with abrasion testing, showed limited optical losses under the applied laboratory conditions. When applied to mini crystalline silicon photovoltaic modules, the coated glass increased the short-circuit current density and power conversion efficiency by 8.86% and 8.84%, respectively, in relative terms. This work demonstrates that TEOS-regulated TiO 2 @SiO 2 interfacial engineering is an effective strategy for developing self-cleaning antireflective coatings with laboratory-scale optical stability for photovoltaic cover glass.
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2018
·Vol. 29
·期 14
·12045-12054
·
IF 2.324
Huang Zhaohui,Chen Hui,Zhao Lei,He Xuan,Fang Wei,Du Yingying,Li Weixin,Wang Guanghui,Zhang Fuqing
With increasing concern about the problems of environmental pollution and energy, the visible light photocatalytic for dye degradation is receiving considerable attention. CdSe quantum dot (CdSe QDs) sensitized MIL-125/TiO 2 @SiO 2 biogenic hierarchical materials (CMTS) has been fabricated through dual modification of CdSe with TiO 2 and MIL-125, that is the metal–organic framework (MOF) with Ti ions as metal centers and terephthalic acid as the organic ligand. The hierarchical porous heterostructured MIL-125/TiO 2 @SiO 2 composites are firstly obtained by a biogenic-templated method using rice husk as biomorphic. CdSe QDs as sensitizer is further deposited on MIL-125/TiO 2 @SiO 2 via a dipping method. This strategy applies CdSe, MIL-125, and TiO 2 undergo a two-level heterostructure, setting a stage for efficient charge separation. In addition, CMTS possesses a hierarchical porous structure in scale from micrometer to nanometer with high BET surface area. As a result, the CMTS can efficiently adsorption target, improving light harvesting and promoting degradation of organic waste from water. Meanwhile, Rhodamine B aqueous solution can be degraded more than 98% by CMTS in 100 min under visible light irradiation.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
RSC Advances
·
2017
·Vol. 7
·期 79
·50027-50034
·
IF 3.108
Huizhen Wang,Wenzhi Li,Jindong Wang,Hou-min Chang,Hasan Jameel,Qi Zhang,Song Li,Lele Jin
The solid, super, acid catalyst S2O82−/ZrO2–TiO2–SiO2, which has both a strong Brønsted acid and Lewis acid, was prepared and applied in lignin depolymerization. The results indicate that S2O82−/ZrO2–TiO2–SiO2 is an effective catalyst for lignin depolymerisation since the liquid product was almost completely dissolved in ethyl acetate, indicating that it was comprised of mostly oligomeric lignin degradation products. The effect of hydrogenation co-catalysts (Pd/C, Pt/C and Ru/C, Rh/C) were also studied and found to improve the yield of aromatic compounds and the petroleum ether soluble fraction, which are mostly monomeric and dimeric products. The resulting yields of aromatic compounds and petroleum ether soluble products were 14.8% and 46%, respectively, when S2O82−/ZrO2–TiO2–SiO2 and Pt/C mixed catalyst was used at 310 °C for 24 hours. These results show that the use of a combination Brønsted and Lewis acid catalyst in combination with a hydrogenation catalyst (S2O82−/ZrO2–TiO2–SiO2 together with a noble metal catalyst) opens a practical route for efficient lignin depolymerization.
研究领域:
化学工程
·
催化材料
·
可再生资源转化
✓ 已验证
DOI
高影响因子
RUBBER CHEMISTRY AND TECHNOLOGY
·
2024
·
IF 1.2
Li Y.,Yuan Y. Z.,Zhang Y.,Sun J. Y.,Tian X. H.,Jin J.,Wu W. B.
Antioxidants are usually added into NR to resist the oxidation caused by UV irradiation, whereas commonly used antioxidants are usually organic and prone to decomposition and migration. Inorganic UV absorbers such as titanium dioxide (TiO 2 ) and silicon dioxide (SiO 2 ) nanoparticles can maintain chemical stability under UV radiation, whereas the hydroxyl radicals from electron-hole pairs in TiO 2 would damage the NR matrix and the poor compatibility of TiO 2 with NR limited the process. Therefore, inert SiO 2 is coated on TiO 2 (TiO 2 @SiO 2 ) to reduce its photocatalytic activity, and polydopamine (PDA) is coated on rubber to improve stability. The strong light-absorbing properties of PDA could also improve the UV-resistant ability of NR. In addition, poly(sodium-p-styrenesulfonate) coating NR-PDA provides the matrix negative charge, and polydiallyl dimethyl ammonium chloride wrapped around TiO 2 @SiO 2 can give a positive charge, thereby moderating the compatibility between the filler and the matrix through electrostatic adsorption. The green UV-resistant natural composite NR-PDA-TiO 2 @SiO 2 was fabricated. The composites exhibited strong tensile strength and excellent UV-resistant properties, which particularly extend the service life of rubber products as UV-shielding materials, thus showing significant potential in extreme environments.
研究领域:
材料科学
·
化学工程
·
环境科学
✓ 已验证
DOI
高影响因子
DYES AND PIGMENTS
·
2016
·
IF 4.055
M.M. Mikhailov,V.V. Neshchimenko,Chundong Li
This study carried out on the diffuse reflective spectra of zinc oxide modified by Al 2 O 3 , ZrO 2 , SiO 2 , CeO 2 , TiO 2 and Y 2 O 3 nanoparticles . It was established that during the modification are formed the solid solutions between zinc oxide and nanopowder as Al 2 ZnO 4 , ZrZnO 3 , Zn 2 SiO 4 , Ce x Zn (1−х) О y , Zn 2 TiO 4 , Y x Zn (1−x) O y . The diffuse reflection spectra of the modified powders are changed in the UV and visible range with a maximum at 395 nm. This band is determined by the intrinsic point defects in the crystal lattice of ZnO as interstitial zinc ions and zinc vacancy. In the IR region also recorded changes due to the absorption of OH-groups adsorbed on the surface modified zinc oxide.
研究领域:
材料科学
·
光学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Chen Hu,Chao Yang,Bo Li,Bangzhu Peng
Consumption of contaminated wines is a significant source of ochratoxin A (OTA) intake in humans, yet existing techniques for OTA removal are inadequate. This study constructs a TiO 2 /SiO 2 /g-C 3 N 4 catalyst (TiSiMs-TCN) with a tubular structure, capable of efficiently removing OTA from both simulated and real wines under visible light irradiation. The results of experiments, characterizations, and theoretical calculations demonstrate that the incorporation of silica enhances the adsorption capacity for OTA, and the tubular structure improves the catalyst's photoelectric properties. The internal electric field between TiSiMs and TCN facilitates electron transfer and the generation of active species, rapidly degrading the adsorbed OTA and promoting the regeneration of active sites, thus maintaining continuous adsorption-photocatalysis synergy. The OTA degradation pathway was analyzed using the Fukui index, electrostatic potential distribution, and intermediate product identification. Toxicological experiments confirm that TiSiMs-TCN is a safe and stable material capable of effectively detoxifying OTA contamination.
研究领域:
食品安全
·
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN
·
2025
·
IF 3.8
Kiguchi Manabu,Wang Jingshen,Yuxin Li,Zhang Dan,Liang Zhongoing,Ma Mei,Fujishima Akira,Hanada Nobuhiro
Nano-sized magnetic photocatalysts (nano TiO2-SiO2/Fe3O4) with a particle size of approximately 20 nm were developed for efficient water treatment. Their photocatalytic performance was comparable to the nano particle photocatalysts, P25. Furthermore, the photocatalysts could be conveniently separated from treated water using a magnet. We then applied the photocatalysts to photokilling of Lactobacillus casei and degradation of persistent herbicides (simetryn, prometryn, metolachlor, and sulfometuron methyl). Lactobacillus casei, a Gram-positive bacterium lacking an outer membrane, was introduced and validated as a reliable model bacterium for photocatalytic antibacterial assessments. Complete photokilling of Lactobacillus casei occurred within 50 minutes of UV irradiation, demonstrating simpler kinetic behavior compared to traditionally used Gram-negative model organisms. The photocatalysts also exhibited effective degradation toward four persistent herbicides. Their concentrations decreased from 10 ppm to below 1 ppm within 120 minutes.
研究领域:
环境科学
·
材料科学
·
微生物学
·
光催化化学
·
水处理技术
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2016
·Vol. 42
·期 6
·7373-7379
·
IF 2.758
Dezhi Hu,Zhihong Li,Yumei Zhu
The synergistic effect of ZnF 2 –TiO 2 –SiO 2 and seeds on the sintering behavior and microstructure of corundum abrasive was investigated. Significant improvement on microstructural homogeneity, densification and mechanical property was achieved by the co-doping and two step sintering (TS) for the abrasive samples. All the doped samples showed relative densities higher than 98% and single particle compressive strengths larger than 30 N. Besides, the two-step sintering samples attained smaller particle sizes, slightly higher densities, and narrower particle size distributions . Sample sintered by TS method with MgTiO 3 seed and the addition of ZnF 2 /TiO 2 /SiO 2 in the molar ratio of 5:7:5 obtained single particle compressive strength of 56.3 N, theoretical density of 99.4% and an average grain size of 0.46 μm. The phase transformation temperatures of doped samples were much lower than that of un-doped ones and they dropped significantly as the content of ZnF 2 raised. The relationship between microstructure and mechanical properties was also discussed.
✓ 已验证
DOI
高影响因子
CELLULOSE
·
2019
·Vol. 27
·期 1
·481-491
·
IF 3.917
Sun Zhuangzhi,Li Zhaoxin,Li Wenzong,Bian Fuguo
Solar steam evaporation is regarded as a green and efficient method to achieve desalination and purification. However, the low-efficiency photothermal conversion of its evaporator is an obstacle to widespread application. Focusing on the interface evaporation method through photothermal conversion, the current bottleneck of the technology is that it is impossible to achieve in-depth interface control of the incident light path to obtain higher water evaporation efficiency. We propose a mesoporous cellulose-based hydrogel for the manufacture of a high-efficiency solar steam evaporator. This type of solar evaporator achieves an enhanced capillary force and optical path extension to increase the photothermal conversion efficiency and evaporation rate. These evaporation performance advantages can all be attributed to the dense mesoporous structure, low thermal conductivity, and high light absorption efficiency. The results showed that under a solar light intensity of 1.5 kW m −2 , the mesoporous structure of the MCNT–TiO 2 –SiO 2 –TiN hydrogel-based evaporator has an excellent evaporation rate (1.853 kg m −2 h −1 ) and high solar energy conversion efficiency (77.39%) due to the low thermal conductivity (0.71997 W m −1 k −1 ), high light absorption efficiency (98.3%, wavelength 190–3000 nm) and good hydrophilic properties (XRD and FT-IR tests). Our results demonstrate a new full-hydrogel solar steam evaporation method by using a simple, easily obtained, reusable, and low-cost solar desalination and purification system based on evaporation can yield fresh water from seawater and sewage. The evaporation technique can be used to produce a simple, easily obtained, reusable, and low-cost solar desalination and purification system for pure freshwater resources from seawater and sewage.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）