Nature Protocols
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2025
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IF 16
Zhang Jingyu,Li Jialong,Wen Xu,Liu Lu,Wei Qiulong,Zhang Pengfei,Zhang Jun-Ye,Zhao Dongyuan,Lan Kun
Titanium dioxide (TiO 2 ) can be used in various applications such as catalysis, sensing, energy storage and conversion due to its semiconducting and crystalline properties. Ordered mesoporous TiO 2 materials with high porosity values may further enable improvements in mass diffusion and surface access. However, despite the syntheses of TiO 2 -based bulks and polymorphs in the past, it remains challenging to control mesoscopic TiO 2 morphology and dimension, pore shape and size, crystallographic phase and orientation. Here we describe a facile and robust solution-processed methodology for the preparation of a series of mesoporous TiO 2 structures with highly tailored architectures at the atomic scale, nanoscale and mesoscale. The process relies on the preformation of flexible micelle hydrogels and the stepwise assembly, under specific conditions to synthesize diverse mesoporous TiO 2 configurations with tunable parameters, such as bouquet-like spheres, chapped spheres, monolayered nanosheets, sandwich, vertical films and so on. The synthetic conditions and procedures are provided in detail to ensure the reproducibility of the experiments. The preparation of micelle hydrogels takes ~21 h, and the subsequent synthesis time to obtain versatile mesoporous TiO 2 is usually ~50 h. Our protocol is suitable for researchers in nanomaterials, porous and inorganic materials and other related disciplines.
研究领域:
材料科学
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纳米技术
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无机化学
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DOI
PubMed
高影响因子
JOURNAL OF POWER SOURCES
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2025
·
IF 7.9
Baorui Liu,Xinyu Shao,Zhe Kang,Hongqing Cheng,Dongying Hu
TiO 2 , as the mainstream of dye-sensitized photoanode, can provide two quantities of state density higher than ZnO. However, van der Waals forces between TiO 2 microcrystals make them more inclined to agglomerate, posing a major obstacle of poor dispersion and homogeneity. Since the charge kinetics of TiO 2 depends on reasonable microstructure arrangement, this study proposes an innovative strategy of sustainable lignin-driven homogenization of microarchitecture in TiO 2 . Herein, the uniform dispersion of TiO 2 microcrystals is successfully induced by alkali lignin (AL) with the reduced grain size of 42–18 nm, and the increased specific surface area of 879.55 m 2 /g. Moreover, AL does not change the anatase structure of TiO 2 . Notably, this micro-homogenized structure of more layered arrangement and active adsorption sites shortens the carrier/electron transport path, achieving high dye loading of 246 nM/cm 2 and photo-conversion efficiency (PCE) of 8.83 %, which exceeds the reported TiO 2 -based dye-sensitized solar cells. Moreover, AL substantially increases the J SC from 18.15 mA/cm 2 to 25.63 mA/cm 2 . Specially, molecular interaction between AL and TiO 2 further supports high PCE of >90 % after 240 h, with good stability. Consequently, this innovative strategy of lignin-driven micro-homogenization in TiO 2 serves as an inspiration for the development of biomass-enhanced TiO 2 -based photoelectric devices.
研究领域:
材料科学
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可再生能源
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纳米技术
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DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2025
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IF 4.1
Haiping Lei,Yiwa Luo,Suqin Li,Jiguo Tu
Silicon dioxide (SiO 2 ), attributed to its exceptional specific capacity, vast resource availability, and cost-effectiveness, has emerged as a promising anode candidate for lithium-ion batteries. Nevertheless, its inherent drawbacks of poor electrical conductivity and pronounced volume expansion during charge/discharge cycles pose significant obstacles to widespread adoption. To address these challenges, innovative strategies involving the design of nanostructured SiO 2 and its integration with coatings have been explored. The unique structure of the resultant SiO 2 -based composites (SiO 2 @RF@TiO 2 ) profoundly facilitates the swift diffusion of both Li + ions and electrons, enhances the accessibility of active sites for Li + insertion, and effectively accommodates the volume fluctuations of SiO 2 during operation. The SiO 2 @RF@TiO 2 composite demonstrates remarkable performance, exhibiting a superior specific capacity of 502 mA h g −1 at a current density of 100 mA g −1 , outstanding rate capability and enhanced cycling stability (retaining 323 mA h g −1 at 200 mA g −1 after 900 cycles), all of which surpass the SiO 2 @RF, thereby offering a compelling solution for the development of high-performance SiO 2 -based anodes for lithium-ion batteries.
研究领域:
材料科学
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能源存储技术
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DOI
高影响因子
ACS Applied Materials & Interfaces
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2025
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IF 8.2
Guopeng Zhu,Tianye Wang,Shaoqing Zhang,Xiutao Yang,Xueyuan Wang,Ying Zeng,Hongwen Yu
Developing efficient photocatalysts for hydrogen evolution via water splitting remains a major challenge. Herein, ultrathin two-dimensional TiO2 nanosheets (∼4.5 nm) were synthesized using the triblock copolymer PEO–PPO–PEO (P123) as a structure-directing agent, followed by platinum nanoparticle deposition. The resulting Pt/2D TiO2 catalyst exhibited an outstanding hydrogen evolution rate of 106.5 mmol gcatal.–1 h–1 and a high quantum efficiency of 66% under a 365 nm irradiation. Mechanistic studies revealed that hydrogen production predominantly occurred via water splitting rather than methanol oxidation, with a kinetic isotope effect of 2.5 confirming water decomposition as the rate-determining step. The ultrathin nanosheets shortened the photogenerated carrier migration distance, resulting in enhanced charge separation, evidenced by a photocurrent increase and extended carrier lifetime (2.28 ns). This work provides valuable insights into the design of ultrathin nanosheet-based materials for high-efficiency photocatalytic hydrogen evolution.
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PubMed
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
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2025
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IF 4.7
Yuxin Liu,Jianhong Ye,Li Zhao,Maosheng Fu,Yiyao Cao,Yu Xie,Wei Zhang
The swift combination of electrons and holes produced by light exposure restricts the versatility of titanium TiO 2 . Enhancing the separation of photo-induced charge carriers while maximizing the density of active sites on the surface. In this work, the noble metal Au and the modified TiO 2 hollow sphere structure are used to improve the hydrogen production rate by regulating the interaction between noble metal-TiO 2 and increasing the metal-TiO 2 interfacial active sites. According to the study, the optimal performance is achieved at a gold concentration of 0.5 wt%, the hydrogen production rate of 0.5Au@TiO 2 was as high as 4.73 mmol · g -1 · h -1 , which was roughly 36.38 times higher than the monolithic hollow-shell structure's (0.13 mmol · g -1 · h -1 ), providing a new option for the preparation of photocatalysts with efficient electron-hole separation.
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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
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DOI
PubMed
高影响因子
ACS Applied Optical Materials
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2025
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IF 3.8
Longlong Qin,Liang Liu,Linlin Wu,Shengxiang Huang,Xiaohui Gao,Lianwen Deng
Polyaniline (abbreviated as PANI), a promising electrochromic material, exhibits broad optical tunability and rapid switching time. However, the prolonged preservation of its leucoemeraldine state is hindered by the high thermodynamic stability of its emeraldine salt state. In this work, density functional theory calculation reveals that titanium oxide doping substantially elevates both the highest occupied molecular orbital and lowest unoccupied molecular orbital energy levels in oxidized PANI-TiO2 composites, facilitating electron excitation and polaron formation. Coupled with expanded electrochemical active surface areas and enhanced ion transport efficiency, the synthesized PANI-TiO2 composite films achieve an optical contrast of 73.8%. The coloration and bleaching time of PANI-TiO2 composites was determined to be 0.46 and 0.94 s, respectively, significantly surpassing those of pure PANI films. Moreover, the composites demonstrate exceptional infrared modulation capabilities, exhibiting an emissivity variation (Δε) of 0.61 under low-voltage stimuli (≤1 V). These findings provide a fundamental insight into the structural engineering strategies for advanced electrochromic materials.
研究领域:
材料科学
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电化学
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纳米技术
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光学
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表面科学
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产品关联
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
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2019
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IF 5.589
Tingming Ye,Weixiao Qi,Xiaoqiang An,Huijuan Liu,Jiuhui Qu
Anthraquinone (AQ), a common oxygenated polycyclic aromatic hydrocarbon (PAH) in the water environment, often occurs with higher concentrations than its parent anthracene as it is the dominant intermediate from anthracene during both wastewater treatment and transformation in natural waters. During the elimination of PAHs and their intermediates, the water matrix often induces positive or negative effects. In this paper, photocatalytic degradation of AQ in the presence of inorganic ions (NO 3 − , HCO 3 − , Fe 3+ ) and organic matter (humic acid) was studied with {101} and {010}-TiO 2 as sunlight-driven photocatalysts. Meanwhile, the effect of dissolved oxygen (DO) on photocatalytic degradation of AQ was evaluated. The results showed that NO 3 − had a slight suppressing effect, while HCO 3 – and Fe 3+ promoted the photocatalytic activity due to formation of new oxidizers (CO 3 − and H 2 O 2 ). Interestingly, HA could envelope {101}-TiO 2 to inhibit photodegradation ; however, it had almost no effect on {010}-TiO 2 due to the different surface structures and properties. High dissolved oxygen content in water could markedly promote the photodegradation of AQ. This was consistent with the results of scavenging experiments, which demonstrated that O 2 – and h + played more important roles than OH did. A small amount of benzene was detected as an intermediate product of AQ by LC-QTOF-MS analysis. Hopefully, this work can contribute to the understanding of the potential of water remediation by faceted photocatalysts.
研究领域:
环境科学
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化学
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DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE
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2018
·Vol. 29
·期 9
·1-9
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IF 2.448
He Meng,Chen Xiaoyi,Cheng Kui,Dong Lingqing,Weng Wenjian,Wang Huiming
Surface nanotopography and bioactive ions have been considered to play critical roles on the interactions of biomaterials with cells. In this study, a TiO 2 nanorod film incorporated with Zn-containing bioactive glass (TiO 2 /Zn-BG) was prepared on tantalum substrate, trying to evaluate the synergistic effects of nanotopograpgy and bioactive ions to promote cellular osteogenic differentiation activity. The expression of osteogenic-related genes, ALP as well as the ECM mineralization on TiO 2 /Zn-BG film were significantly upregulated compared to that of the film without TiO 2 nanorod nanostructure (Zn-BG) or without Zn (TiO 2 /BG). Moreover, a much low Zn 2+ release level on TiO 2 /Zn-BG film was beneficial to promote the osteogenesis, which could be ascribed to that a semi-closed space established by TiO 2 nanorods with adhered cells provided an appropriate micro-environment that facilitated Zn 2+ adsorption.
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PubMed
高影响因子
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
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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
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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
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）