JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Ya-Nan Jing,Xing-Liang Yin,Lei-Lei Li,Yan-Lan Wang,Jia Xue,Ze-Feng Xu,Da-Qiang Liu,Chuan-Wu Chen,Xiao-Jie Liu,Er-Kang Liu
CO 2 -to-high value-added chemicals via a photocatalytic route is of interest but strangled by the low efficiency. Herein, a novel Fe-TiO 2-x /TiO 2 S-scheme homojunction was designed and constructed by using a facile surface modification approach whereby oxygen vacancy (OV) and Fe introducing on the TiO 2 nanorod surface. The as-synthesized Fe-TiO 2-x /TiO 2 S-scheme homojunction exhibits positive properties on promoting photocatalytic CO 2 reduction: i) the nanorod structure provides numerous active sites and a radical charge transfer path; ii) the doped Fe and OV not only synergistically enhance light utilization but also promote CO 2 adsorption; iii) the Fe-TiO 2-x /TiO 2 S-scheme homojunction benefits photoexcited charge separation and retains stronger redox capacity. Thanks to those good characters, the Fe-TiO 2-x /TiO 2 homojunction exhibits superior CO 2 reduction performances with optimized CO/CH 4 generation rates of 122/22 μmol g -1 h −1 which exceed those of pure TiO 2 by more than 9.4/7.3 folds and most currently reported catalytic systems. This manuscript develops a facile and universal approach to synthesize well-defined homojunction and may inspire the construction of other more high-efficiency photocatalysts toward CO 2 reduction and beyond.
研究领域:
材料科学
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环境科学
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化学工程
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催化
✓ 已验证
DOI
PubMed
高影响因子
Small
·
2020
·Vol. 16
·期 48
·2004457
·
IF 11.459
Cai Liu,Miaoxin Zhang,Xin Zhang,Biao Wan,Xiaona Li,Huiyang Gou,Yexin Wang,Fuxing Yin,Gongkai Wang
Nano heterostructures relying on their versatile construction and the breadth of combined functionality have shown great potential in energy storage fields. Herein, 2D sandwiched MoSe 2 /TiO 2− x /graphene nano heterostructures are designed by integrating structural and functional effects of each component, aiming to address the rate capability and cyclic stability of MoSe 2 for sodium ion capacitors (SICs). These 2D nano heterostructures based on graphene platform can facilitate the interfacial electron transport, giving rise to fast reaction kinetics. Meanwhile, the 2D open structure induces a large extent of surface capacitive contribution, eventually leading to a high rate capability (415.2 mAh g −1 @ 5 A g −1 ). An ultrathin oxygen deficient TiO 2− x layer sandwiched in these nano heterostructures provides a strong chemical-anchoring regarding the products generated during the sodiation/desodiation process, securing the entire cyclic stability. The associated sodiation/desodiation mechanism is revealed by operando and ex situ characterizations, which exhibits a strong solid electrolyte interphase (SEI) dependence. The simulations verify the dependent sodiation products and enhanced heterostructural chemical-anchoring. Assembled SICs based on these nano heterostructures anode exhibit high initial Coulombic efficiency, energy/power densities, and long cycle life, shedding new light on the design of nano heterostructure electrodes for high performance energy storage application.
研究领域:
材料科学
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能源存储
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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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2025
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IF 4.7
Shishu Sun,Tianyi Sun,Dashuai Zhang,Jinrui Liu,Liying Ren,Chuilong Chen,Wei Yao,Zaifeng Shi
In this paper, the synthesis, characterization, and photocatalytic performance of CuNi/TiO 2-x composites in the degradation of antibiotic Norfloxacin (NOR) under visible light were investigated. Compared to conventional TiO 2 , the composite catalyst demonstrated superior photocatalytic activity by introducing CuNi nanoparticles and oxygen vacancy in TiO 2 . The oxygen vacancy defect in titanium dioxide crystal reduced the band gap energy. In addition, the incorporation of Cu nanoparticles leveraging Surface Plasmon Resonance (SPR) and Ni nanoparticles as electron traps further markedly enhanced the electron-hole pair separation efficiency and solar energy utilization, catalyzing NOR degradation efficiently. Electron Spin Resonance (ESR) confirmed the generation of reactive oxygen species, which was pivotal to the NOR degradation. This study underscores the potential of bimetallic composites for environmental remediation, particularly in treating antibiotic-laden 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
高影响因子
ACS ES&T Engineering
·
2023
·
IF 7.1
Haifang Mao,Mengli Xu,Shuangjun Li,Yuqing Ren,Yun Zhao,Jun Yu,Qizhong Zhang,Wenshu Zhao,Gui Zhang,Lan Yan,Zhenmin Xu,Zhenfeng Bian
The activation of surface lattice oxygen is crucial for designing highly efficient photocatalysts for volatile organic compound (VOC) purification. Herein, the Pt/TiO2–x catalyst with abundant oxygen vacancies was successfully prepared via the pyrolysis of the Pt-modified Ti metal–organic framework (MOF) under an air atmosphere. Detailed experimental results and density functional theory calculations revealed that the introduction of oxygen vacancies modulated the electronic configuration of the Pt site and enhanced the charge transfer from Ti to Pt, which created an electronic metal–support Pt–Ti interaction interface (EMSI). The established Pt–Ti interface is favorable for the activation of the surface lattice oxygen adjacent to the Pt site [identified by H2 temperature-programmed reduction (TPR), electron paramagnetic resonance (EPR), and in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS)] and subsequently facilitates toluene oxidation via a direct ring opening process. This study offers a promising strategy for the design of high-performance photocatalysts for VOC oxidation.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
VACUUM
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2020
·
IF 2.906
Mengnan Nie,Lingling Wang,Zhihao Wang,Jielin Huang,Junwei Zhao,Xin Yu,Quanhui Guo
Nanostructured C–TiO 2-X microspheres were prepared by facile modified solvothermal method and employed as an efficient visible light photocatalyst for photocatalytic antibiotic elimination. The acetone as well as distilled water not only induced the high crystallization of nanostructured C–TiO 2-X microspheres, the formation of C–TiO 2-X nanodots , and oxygen vacancies , but also boosted the assembling of C–TiO 2-X nanodots into nanostructured microspheres. The photocatalytic performance of nanostructured C–TiO 2-X microspheres was evaluated by photocatalytic antibiotic degradation under visible light and Xe lamp irradiation. The prepared C–TiO 2-X microspheres showed highly improved visible light absorption, charge separation, and visible light photocatalytic activity . The visible light photocatalytic activity of nanostructured C–TiO 2-x -180 microspheres was approximately 3.14 times of commercial TiO 2 , which could be attributed to the construction of unique nanostructures , oxygen vacancies, and carbon doping for efficient solar light harvesting and utilization, the diffusion of degraded products, and charge separation. Besides, the detailed energy band structures , active species for visible light photocatalytic tetracycline degradation, and visible light photocatalytic mechanism of nanostructured C–TiO 2-X microspheres were also proposed in the work.
研究领域:
材料科学
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环境科学
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化学
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2018
·Vol. 44
·期 3
·1586-1596
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IF 4.229
Tianyu Zhao,Zipeng Xing,Ziyuan Xiu,Zhenzi Li,Shilin Yang,Qi Zhu,Wei Zhou
TiO 2-x /g-C 3 N 4 /CdS ternary heterojunctions are fabricated through thermal polymerization-chemical bath deposition combined with in-situ solid-state chemical reduction approach. The prepared materials are characterized by X-ray diffraction, Fourier transform infrared spectra , scanning electron microscopy, transmission electron microscopy , nitrogen adsorption-desorption, and X-ray photoelectron spectroscopy. The results show that the ternary heterojunctions are formed successfully and CdS quantum dots (QDs) and TiO 2 are anchored on surface of g-C 3 N 4 nanosheets simultaneously. The visible-light-driven photocatalytic degradation ratio of Bisphenol A and hydrogen production rate are up to 95% and ∼254.8 μmol h −1 , respectively, which are several times higher than that of pristine TiO 2 . The excellent visible-light-driven photocatalytic activity can be ascribed to the synergistic effect of TiO 2−x , g-C 3 N 4 and CdS QDs which extend the photoresponse to visible light region and favor the spatial separation of photogenerated charge carriers.
研究领域:
材料科学
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光催化
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纳米材料
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环境催化
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能源化学
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES B-BIOINTERFACES
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2023
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IF 5.8
Shuqing Xiang,Mingqian Wang,Li Li,Jian Shen
The gas therapy of some endogenous signaling molecules to treat diseases has caused extensive research, among which NO gas has shown great potential in fighting infection with various pathogens, promoting wound healing, etc. Here, we propose a photothermal/photodynamic/NO synergistic antibacterial nanoplatform by loading L -arginine (LA) on mesoporous TiO 2 and then encapsulating it with polydopamine . The obtained TiO 2−x [email protected] nanocomposite possesses both the excellent photothermal effect and ROS generation ability of mesoporous TiO 2 , and the release of nitric oxide (NO) from L -arginine under near-infrared (NIR) light irradiation , while the sealing layer of PDA could induce NIR-triggered NO controlled release. In vitro antibacterial experiments confirmed that the synergistic effect of TiO 2−x [email protected] nanocomposites has excellent antibacterial effects against Gram-negative and Gram-positive bacteria, while in vivo experiments showed that it has lower toxicity. It is worth noting that compared with the pure photothermal effect and ROS, the generated NO showed a better bactericidal effect , and NO had a better ability to promote wound healing. In conclusion, the developed TiO 2−x [email protected] nanoplatform can be used as a nanoantibacterial agent, which can be further explored in the related biomedical field of photothermal activation of multimodal combined antibacterial therapy.
研究领域:
纳米技术
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生物医学工程
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药学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2025
·
IF 6.3
Shishu Sun,Tianyi Sun,Dashuai Zhang,Jinrui Liu,Liying Ren,Chuilong Chen,Wei Yao,Zaifeng Shi
In this paper, the new CNQDs/CuNi/TiO 2-x composites were prepared successfully for the efficient photocatalytic degradation of tetracycline hydrochloride (TCH) under visible light. The CNQDs/CuNi/TiO 2-x composite, which combined carbon nitride quantum dots (CNQDs) and bimetallic CuNi nanoparticles with defective TiO 2-x , showed excellent photocatalytic properties. The upconversion property of CNQDs transformed lower-energy light into higher-energy photons, broadening the light absorption into the visible spectrum. Moreover, the CuNi nanoparticles enhanced charge carrier dynamics through surface plasmon resonance (SPR) effects, improving the photogenerated electron-hole separation efficiency. Under optimal conditions (pH = 9), the CNQDs/CuNi/TiO 2-x composite with 2 % CNQDs achieved the highest degradation efficiency. When the initial TCH concentration was 10 mg/L and the catalyst concentration was 200 mg/L, the degradation efficiency of TCH exceeded 95 % within 60 min. The composite exhibited superior photocatalytic performance and offered the optimal balance of light absorption and charge separation. This research advances the development of sustainable and highly effective photocatalytic materials, providing a promising approach for wastewater treatment and environmental purification.
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
高影响因子
ACS Applied Materials & Interfaces
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2022
·
IF 10.383
Xinzhi Tan,Suru Liu,Xingyu Hu,Ruitao Zhang,Xiaofan Su,Ruojing Qian,Yao Mai,Zhaoyu Xu,Wei Jing,Weidong Tian,Li Xie
The effective treatment for periodontitis is to completely and sustainedly eradicate the bacterial pathogens from the complex periodontal pockets. Local sustained-release antibiotics as a complementary treatment after scaling and root planning can sustainedly combat bacterial pathogens in the periodontal pockets to help treat the disease, but the increasing concern of bacterial resistance limits its future use. Here, we reported a local antibacterial system based on microsized multifunctional Ag–TiO2–x encapsulated in alginate (ATA) microspheres. We confirmed that ATA displayed strong photothermally enhanced dual enzyme-mimicking (peroxidase-like and catalase-like) activities and weak photocatalytic activity under 808 nm near-infrared (NIR) irradiation, which could boost the generation of reactive oxygen species (ROS) and O2 in the presence of low-level H2O2. As a result, the ATA/H2O2/NIR system exhibited efficient antibacterial activity against Porphyromonas gingivalis and Streptococcus gordonii in both planktonic and biofilm forms. With the help of ROS, ATA could release Ag+ in concentrations sufficient to inhibit periodontal pathogens as well. Moreover, the in situ-generated oxygen was supposed to alleviate the local hypoxic environment and would help downregulate the lipopolysaccharide-mediated inflammatory response of periodontal stem cells. The in vivo rat periodontitis treatment results demonstrated that the ATA/H2O2/NIR system reduced the bacterial load, relieved inflammation, and improved tissue healing. Our work developed a new local prolonged bactericidal and oxygenation system for enhanced periodontitis. Avoiding the usage of antibiotics and nanomaterials, this strategy showed great promise in adjunctive periodontitis treatment and also in other biomedical applications.
研究领域:
牙科学
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生物医学工程
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材料科学
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药剂学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2022
·
IF 5.518
Min Zhang,Muhammad Arif,Yunyuan Dong,Xiaobin Chen,Xiaoheng Liu
In photocatalysis as a “green chemistry” technology, the development of efficient strategies to fabricate high-performance micro-nano photocatalysts with robust solar light utilization to deal with persistent pharmaceutical products in the wastewater system is crucially important. In order to improve the photoelectric activity, interfacial charge transfer, and reduce the recombination rate of photo-generated electron-hole pair, a Z-scheme TiO 2−x @ZnIn 2 S 4 heterojunction was prepared by hydrothermal method . The morphological structure and optical properties of the prepared catalysts were extensively characterized. Experimental results show that the rich of oxygen vacancies in TiO 2−x benefits the formation of local defect energy levels at the bottom of the CB , which can be advantageous to broaden the light absorption range. Likewise, the TiO 2−x @ZnIn 2 S 4 showed 12.4-fold and 7.70-fold higher photocatalytic performance pristine TiO 2−x and ZnIn 2 S 4 towards the degradation of tetracycline hydrochloride (TCH) and nitrofurantoin (NFT) in real water matrix and solution water. Furthermore, the photo-decomposition pathway of NFT was proposed by HPLC-MS, and the Z-scheme electron transfer mechanism in TiO 2−x @ZnIn 2 S 4 heterojunction was proposed and discussed in detail. This work emphasizes a facile method for designing high-efficiency oxygen vacancy mediated titanium-based photocatalysts with excellent photoactivity in environmental remediation.
研究领域:
环境科学
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材料科学
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化学
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光催化
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水处理
✓ 已验证
产品关联
DOI
高影响因子
ACS Catalysis
·
2018
·
IF 11.384
Guoxue Liu,Wei Li,Ran Bi,Christian Atangana Etogo,Xin-Yao Yu,Lei Zhang
Despite the ultrahigh energy density of rechargeable lithium–oxygen (Li-O2) batteries, their practical use is still hindered by the poor performance of electrocatalysts. Recently, porous and hollow nanostructured catalysts have been found to be promising electrocatalysts toward the ORR/OER to improve the performance of Li-O2 batteries. However, the catalytic activities of the catalysts are still insufficient and the nanopores are easily clogged by the insoluble discharge products. Herein, highly porous and hollow TiO2–x nanoboxes (TiO2–x NBs) with large surface areas, increased oxygen vacancies, and high grain boundary density have been developed as an electrocatalyst for Li-O2 batteries via a cation-assisted synthetic approach. The Li-O2 batteries with TiO2–x NBs as the electrocatalyst exhibit a high specific capacity of 8569 mA h g–1, excellent rate capability, and long cycle life up to 200 cycles when the capacity is limited to 1000 mA h g–1. Moreover, this cation-assisted approach for fine-tuning the nanostructure could be an innovative strategy to design efficient electrocatalysts for high-performance Li-O2 batteries.
研究领域:
材料科学
·
电化学
·
纳米技术
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Kejin Jiao,Shujie Liu,Yanyan Ma,Shuo Chen,Liying Wei,Jianhua Yan
Lithium (Li) metal battery is a promising next generation energy storage system due to its high energy density , but what hinders its commercialization is the safety hazard of Li-anode, especially under high current densities. Here, we report a dual strategy of using electronic conductive black TiO 2−x nanofiber films to construct composite Li-metal anodes with stable 3D networks and applying an in-situ polymerized ionic conductive gel-electrolyte to construct efficient quasi-solid-state Li-batteries (QSSLBs). The 3D nanofibrous Li-anode shows a stable and small nucleation barrier and can run stably (>1600 h) at a high current density of 10 mA/cm 2 . When matching with high-loading cathodes of LiFePO 4 , the QSSLBs exhibit excellent long-term cycling stability (>500 cycles) and high-rate capability (>1 C). In addition, the in-situ polymerization strategy can be incorporated with the commercial lamination manufacturing to produce 63-Ah pouch cells of LiFePO 4 ||graphite, which deliver a high initial Coloumbic efficiency, a large energy density at 0.3 C, excellent rate capability from 0.25 to 2 C, and long-term cycling performance at 0.3 and 1 C, showing potential commercial prospects.
研究领域:
能源存储
·
材料科学
·
电化学
·
电池技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）