JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2022
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IF 9.965
Yulei Sui,Bingjue Wang,Zhihao Shi,Xiaoping Zhang,Xiang Gao,Shengkui Zhong,Yu Xia,Ling Wu
With the proposal of carbon peaking and carbon neutrality goals, clean energy storage is attracting more and more attentions. In view of the lack of lithium resource in our earth, sodium-ion batteries are considered as the emerging and promising next-generation energy storage devices. Appropriate high-performance anode materials play a vital role in the development of sodium-ion batteries. Here, a core-shell hollow Ni-Co-P nanopolyhedron interconnected by oxygen defect TiO 2 (Ni-Co-P@TiO 2- x ) is reported, which is synthesized by ion etching-hydrolysis and subsequent phosphatization/hydrogenation treatment using ZIF-67 as template and hybrid carbon source. The achieved Ni-Co-P@TiO 2- x material has several distinct advantages including hollow core-shell structure, flexible conductive carbon matrix, stable electroactive coating layer, and efficient pseudocapacitive behavior, resulting in high reversible capacities, remarkable rate capability and excellent cycle stability. The synergetic battery-capacitor characteristic of Ni-Co-P@TiO 2- x material makes it become a promising anode for sodium-ion batteries.
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高影响因子
Advanced Materials Interfaces
·
2016
·Vol. 3
·期 22
·1600588
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IF 3.365
Huimin Shi,Xuejiao Wang,Mengjie Zheng,Xing Wu,Yiqin Chen,Zhengmei Yang,Guanhua Zhang,Huigao Duan
Rational engineering hierarchical 3D nanostructures with high visible-light photocatalysis and long-term cycling stability are of great importance in environmental purification and energy conversion. A novel and scalable approach is demonstrated to fabricate hierarchical plasmon-resonance-induced black Au–TiO 2 nanorod arrays (NRAs) on flexible carbon cloth (CC). With the advantages of hierarchical morphology, plasmon-enhanced visible-light absorption, facile charge separation enabled by single-crystalline TiO 2 and conductive substrate, the black Au–TiO 2 NRAs on CC show more than 13 times higher visible-light photocatalytic efficiency enhancement compared to that of bare TiO 2 NRAs. Meanwhile, the hybrid Au–TiO 2 –C system shows extremely high chemical and mechanical stability. The visible-light photocatalysis does not show any decrease after consecutive seven times test. More remarkably, after being continuously stirred in aqueous solution for 60 d, almost no decrease of photocatalytic activity is observed. The UV–vis absorption measurement, optical simulations, and the control experiment on hierarchical Au–SiO 2 @TiO 2 NRAs reveal that the enhanced visible-light photocatalysis is caused by the plasmon-induced hot-electrons transfer from Au nanoparticles to neighboring TiO 2 NRAs. The high visible-light photocatalytic performance and the excellent chemical/mechanical stabilities imply that the black Au–TiO 2 NRAs on CC can serve as potential photocatalytic materials for large-scale applications in energy conversion and pollutants purification.
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MATERIALS RESEARCH BULLETIN
·
2019
·
IF 3.355
Bo Yu,Fanming Meng,Muhammad Wasim Khan,Rui Qin,Xingbin Liu
Herein, TiO 2 /g-C 3 N 4 /Ag (TCA) composites were successfully fabricated by a simple two-step method and wet chemical reduction. Titanium isopropoxide and melamine were used as precursors to prepare TiO 2 /g-C 3 N 4 heterojunction composites by simple stirring and calcining. Then, different mass fractions of AgNPs were decorated on the surface of the above composites by wet chemical reduction to obtain a sequence of TiO 2 /g-C 3 N 4 /Ag (TCA) composites. TCA composites were analyzed by XRD, TEM, HRTEM, EDS, XPS, BET, Raman spectroscopy, PL spectrum and UV–vis diffuse reflectance spectrum. The results showed that TCA composites had remarkable enhancement in the separation of photogenerated carriers and the utilization of light, which was as result of the coordination of the three components. For photodegradation of RhB or phenol under simulated sunlight, TCA-1 samples revealed the best photocatalytic degradation performance, and the corresponding degradation rates were 91.4% at 60 min and 90.0% at 120 min, respectively. Moreover, TCA-1 composites maintained superior degradation performance after reusability tests, indicating that TCA-1 composites had excellent photochemical stability. For experimental results, a possible photodegradation mechanism of TCA composites was also proposed.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Feilong Shi,Xin Wei,Xiaoqing Wu
The output performance of triboelectric nanogenerators (TENGs) can drop dramatically in high temperature environments because of the thermionic emission effect. To enhance the thermal charge stability and expand the working temperature of TENG, polyimide nanofibers (PINF) were synergistically enhanced by the electron trapping mechanism of reduced graphene oxide (rGO) and interfacial polarization of TiO 2 . With the multiple enhancement effect of polyimide/rGO/TiO 2 composite nanofibers (PRTNF) on triboelectric output, PRTNF-TENG generated an open circuit voltage of 228.26 V and a short circuit current of 5.22 μA, which were 3.80 and 3.48 times higher than those of PINF-TENG. The effective output of polymer-based TENG was investigated from 25 − 300 °C. Compared to room temperature, the PRTNF-TENG can maintain 19.45 % (44.39 V) and 18.20 % (0.95 μA) of the voltage and current at 300 °C, respectively, and still drive 50 commercial LEDs. Furthermore, PRTNF-TENGs were applied as self-powered sensors for firefighters to provide real-time motion monitoring and ambient temperature detection. This PRTNF-TENG has broad application prospects for energy harvesting and smart electronic monitor in harsh environments such as fire and space.
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高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Chaohui Guan,Jiefei Li,Tao Chen,Liang Lv,Junfeng Du,Shuai Zhang,Hang Wei,Haibin Chu
Developing high performance catalytic materials for the electro-oxidation of glycerol into specific value-added products is essential for glycerol valorization. Herein, we used the sol–gel method to coat the TiO2 layer with adjustable thickness on the surface of carbon nanotubes (CNTs), obtaining a unique morphology of porous sheath TiO2 wrapped CNTs (TiO2/CNTs). Subsequently, Pt nanoparticles were loaded onto TiO2/CNTs using the ethylene glycol reduction method. The prepared Pt–TiO2/CNTs catalyst achieves a glycerol conversion near 100% at 0.8 V vs. RHE and 60 °C for 10 h. Notably, the selectivity of tartronate reaches 52.5% after 24 h. Characterization results reveal that the dispersed Pt nanoparticles are embedded into the holes of the TiO2 porous sheath, fabricating abundant Pt–TiO2–CNT interface structures. The infusion of TiO2 shifts the center of the d-band upwards, and enhances the adsorption of the glycerate intermediate on Pt particles, which facilitates the further oxidation of glycerate to tartronate. This simple and efficient morphology control method provides a new strategy for glycerol valorization via electrocatalysis.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Xiao Chen,Nannan Zhang,Huaming Wang,Ying Zhong,Tianming Lv,Changhai Liang
The continuous flow selective hydrogenation of maleic anhydride (MA) to γ-butyrolactone (GBL) over highly efficient and long-term stable catalysts is a considerable promising strategy for both lab-scale as well as industrial application. In this work, a PtPdCoNiCu/TiO 2 high-entropy alloy (HEA) catalyst is developed by the colloidal impregnation method, in which the HEA colloids are synthesized by lithium naphthalenide-driven reduction at mild conditions according to the redox potential of the various metals. The PtPdCoNiCu/TiO 2 catalyst exhibits highly efficient in the hydrogenation of MA with 91 % selectivity to GBL at full conversion of MA under the weighted hourly space velocity of 1.14 h −1 , 3 MPa H 2 , and 260 °C. Due to the present of oxygen vacancy in the TiO 2 support and the hydrogen spillover, the PtPdCoNiCu/TiO 2 HEA catalyst presents a low apparent activation energy (75 kJ mol −1 ), boosting the hydrogenolysis of C=O bonds for generating of GBL. The cocktail effect is presented in the PtPdCoNiCu/TiO 2 catalyst, and its catalytic activity is much better than that of corresponding monometallic and bimetallic catalysts. It realizes the reduction and substitution of precious metal catalysts. In addition, the PtPdCoNiCu/TiO 2 catalyst with sintering resistance and acid resistance shows excellent long-term stability within 132 h. This work is of great significance for understanding HEA catalysis at the atomic level and provides the possibility for developing low-cost and efficient precious metal industrial catalysts.
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高影响因子
Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Shiva Pandeya,Rui Ding,Yufei Ma,Xuling Han,Meixing Gui,Purnima Mulmi,Khim Prasad Panthi,Bhanu Bhakta Neupane,Hem Raj Pant,Ziliang Li,Mahesh Kumar Joshi
The self-standing TiO 2 nanofiber-based heterojunction with excellent visible-light-driven photocatalytic activity, antimicrobial activity, and reusability holds great importance in water and airborne pollutant management. Herein, a series of splendid flexible CdS/TiO 2 (CdS/TZ) nanofibrous membranes (NFMs) were fabricated by facile post-electrospinning treatment. The self-standing TiO 2 NFM was first prepared via the electrospinning technique followed by controlled calcination, and then the CdS nanoparticles (NPs) were grown by the successive ionic layer adsorption and reaction (SILAR) method. The careful deposition of CdS NPs preserved the self-standing properties of the TiO 2 membrane. The amount of CdS NPs in the CdS/TiO 2 membrane was tailored by varying the SILAR cycles. The CdS/TiO 2 heterojunction demonstrated superior antimicrobial efficacy against both Gram-positive and Gram-negative bacteria. Additionally, it enhanced the photocatalytic degradation of the methyl orange and effectively removed oxidizable impurities from pharmaceutical effluent while maintaining good recycling capacity. The photocatalytic degradation of methyl orange obeyed the pseudo-first-order reaction dynamics model and showed a strong influence of the CdS amount on the degradation. The maximum degradation rate for methyl orange dye using the CdS/TiO 2 Janus membrane was 0.057 min −1 , which was 3.5 times that of the TiO 2 membrane. The degradation efficiency of CdS/ TiO 2 was found to be up to 96.8% in 60 minutes and showed excellent photocatalytic activity in five consecutive cycles. The chemical oxygen demand (COD) removal efficiency for the TiO 2 membrane was 74.16, which was increased to 91.66% for the CdS/TiO 2 membrane. This study provides insight into developing highly efficient Janus inorganic nanofiber with superior structural integrity for waste water treatment and environmental remediation.
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高影响因子
Materials Today Communications
·
2025
·
IF 4.5
Jianhang Yuan,Qinglan Chen,Yongqiang Wang,Shaomin Zhou,Shiyun Lou
The construction of photocatalysts with high sunlight absorption capacity and fast photogenerated carrier separation is essential for environmental remediation and solar energy conversion. However, metal oxides, such as TiO 2 , still suffer from the severe recombination of photogenerated charge carriers and the low consumption of sunlight. The type-II heterojunction hollow structure decorated with dual co-catalysts were proposed to simultaneously address the issues in charge separation and sunlight absorption. Herein, bifunctional cocatalysts, Au and MnO x , are spatially separated anchored on the inner and outer surfaces of TiO 2 @WO 3 heterogeneous hollow nanospheres. The spatially separated dual cocatalysts promoted the separation of photogenerated charge carriers by steering the photogenerated electrons and holes in opposite directions. Additionally, the surface plasmon resonance absorption of co-catalysts Au nanoparticles (450-600 nm) and light absorption of WO 3 (<450 nm), and scattering in hollow nanospheres synergistically improve the absorption of sunlight. As a result, the as-prepared TiO 2 @WO 3 hollow sphere decorated with Au and MnO x exhibits an exceptional photocatalytic degradation of phenol compared with pure TiO 2 @WO 3 hollow sphere or TiO 2 @WO 3 hollow sphere decorated with single cocatalyst Au or MnO x . This work fully demonstrates that the designed type-II heterogeneous structures with the spatially separated cocatalysts are a promising solution for enhancing photocatalysis performance.
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高影响因子
CHINESE JOURNAL OF POLYMER SCIENCE
·
2024
·
IF 4.1
Zhang Yu-Hua,Zhang Zi-Yu,Liu Xin,Ma En-Guang,Guo Jiang-Tao,Li Li,Guo Xu-Hong
Titanium dioxide (TiO 2 ) hollow nanoparticles present significant potential for photocatalytic applications while their straightforward preparation with precise structure control is still challenging. This work reports the approach to preparing tunable hollow TiO 2 nanospheres by utilization of spherical polyelectrolyte brushes (SPB) as nanoreactors and templates. During the preparation, the evolution of the structure was characterized by small angle X-ray scattering (SAXS), and in combination with dynamic light scattering and transmission electron microscopy. The formation of TiO 2 shell within the brush (SPB@TiO 2 ) is confirmed by the significant increase of the electron density, and its internal structure has been analyzed by fitting SAXS data, which can be influenced by Titanium precursors and ammonia concentration. After calcining SPB@TiO 2 in a muffle furnace, hollow TiO 2 nanospheres are produced, and their transition to the anatase crystal form is triggered, as confirmed by X-ray diffraction analysis. Utilizing the advantages of their hollow structure, these TiO 2 nanospheres exhibit exceptional catalytic degradation efficiency of methylene blue (MB), tetracycline (TC), and 2,4-dichlorophenoxyacetic acid (2,4-D), and also demonstrate excellent recyclability.
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高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Kexin Zhang,Jie Song,Ce Liang,Kaifeng Yu
To overcome the performance bottleneck caused by the single-structure optimization of TiO 2 -based anode materials and to explore a new approach for the resource utilization of agricultural waste, this study synthesized nano-TiO 2 particles (TiO 2 -NP) via a co-precipitation and hydrothermal method. Porous carbon spheres (CSHC) were prepared using discarded corn stalk pith as a carbon source through a hydrothermal carbonization and high-temperature calcination coupling process. Subsequently, TiO 2 -NP was in situ grown onto CSHC, forming a nano-TiO 2 /corn stalk pith carbon sphere composite material (TiO 2 -NP/CSHC), thereby achieving the synergistic enhancement of nano-TiO 2 and biomass-derived carbon. This design not only alleviates the agglomeration of TiO 2 but also significantly enhances the electrochemical performance of the composite material via a three-dimensional conductive carbon network. The prepared TiO 2 -NP/CSHC exhibits a high specific surface area of 101.2 m 2 g −1 and a well-developed porous structure, delivering excellent lithium and sodium storage performance as an anode material for lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs). At a current density of 0.2C, after 100 cycles, the discharge specific capacities were maintained at 1182.5 mA h g −1 and 675.3 mA h g −1 , respectively. Through the structural and functional synergy of TiO 2 -NP and CSHC, the composite material simultaneously achieves high capacity, long cycling stability, and fast charge/discharge capability, while also offering environmental sustainability and cost-effectiveness.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Dexiang Zhang,Fujun Lan,Xiaomei Zhou,Yu Shu,Fu Li,Qingxin Guan,Mo Qiu,Wei Li
Amino acids are widely used in various applications, its production mainly relies on the fermentation of grain crops, and the chemosynthesis method from non-grain biomass still faces the challenge of low efficiency (<50 %). Herein, Ru clusters anchored on ultrathin TiO 2 nanobelts (NBs) with abundant oxygen vacancies are fabricated and used to convert lignocellulose-derived α-hydroxy acids to α-amino acids. The Ru/TiO 2 NBs achieved up to 80 % alanine yield from lignocellulose-derived lactic acid (LA). The characterization results reveal that the TiO 2 NBs with abundant oxygen vacancies could anchor Ru clusters uniformly and enable the α-OH dehydrogenation occur spontaneously. Simultaneously, Ru clusters with appropriate particle size are beneficial for the activation of H 2 and could promote the dehydrogenation from the α-OH and α-C(sp 3 )-H of LA. Furthermore, DFT simulations also indicate that further decrease the Ru cluster size (< 1 nm) will inhibit the adsorption of α-C(sp 3 )-H on cluster surface, thereby suppressing the removal of hydrogen atoms. This research provides a green and efficient chemical catalytic conversion idea for amino acid production from non-grain biomass.
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PubMed
高影响因子
ACS Catalysis
·
2025
·
IF 13.1
Weina Yang,Yachao Wang,Yaxiong Wei,Guofeng Zhao,Weixin Huang,Cong Fu
Photocatalytic oxidative coupling of methane (OCM) offers a sustainable pathway for direct conversion of methane into value-added hydrocarbons, yet faces persistent challenges in balancing efficient methane activation with suppression of overoxidation. Here, we present a TiO2-based photocatalyst decorated with highly dispersed Ag–Co dual sites that achieves superior performance in continuous-flow OCM. The optimized AgCo–TiO2 system demonstrates a remarkable C2 hydrocarbon production rate of 1.7 mmol g–1 h–1 with 91% selectivity while maintaining stable operation for over 30 h. In situ spectroscopic analyses indicate that the introduced Co species induce mobile-charge imbalances, driving the directional transfer of photogenerated electrons and effectively suppressing electron–hole recombination. Coupled with Ag serving as a catalytic center, these effects synergistically enhance O2 activation, C–H bond cleavage, and selective C–C coupling, thereby contributing to the superior catalytic performance. This work provides valuable mechanistic insights into the photocatalytic OCM process, highlighting the pivotal role of precisely engineered charge transfer pathways in enabling efficient methane-to-C2 conversion.
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