JOURNAL OF POWER SOURCES
·
2022
·
IF 9.794
Lingqiao Kong,Jingyuan Qiao,Qiushi Ruan,Hui Wang,Xufeng Xi,Wenwen Zha,Zhenghua Zhou,Wei He,Wei Zhang,ZhengMing Sun
Photochemical-assisted rechargeable batteries are suffering from a high charge potential due to unfavorable surface charge kinetics of photochemical electrodes, that is surface defects induced energy loss . In this work, in-situ growing thickness-controlled polymer nanolayer on TiO 2 nanorods electrode by a facile solvothermal reaction optimizes surface states conditions via mitigating oxygen vacancy induced hole trapping agents, while polymer nanolayer creates abundant active surface states that efficiently extract holes for photooxidation reaction. For modified photoelectrodes , 8 times improvement in interfacial charge transfer/recombination ratio (K t /K r ) at a low applied bias contributes to a low onset potential (0.2 V vs. RHE) for photooxidation and shows 12 times improvement in photocurrent density at 0.4 V vs. RHE under simulated sunlight irradiation (AM 1.5 G, 100 mW cm −2 ) than that of r-TiO 2, which contributes to the superior performance of a photochemical-assisted rechargeable Zn-air battery (PZAB). Equipping such a photoelectrode can photo-charge the battery at 10 mA cm −2 with a record-low potential of 0.8 V, saving 76.5% electrical energy. The electrode shows excellent stability for a 10-h cycling test. This work provides scientific thoughts and synthetic strategies for a highly efficient solar-rechargeable electric energy storage system and expands the scope of application for conjugated polymers .
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Xinjuan Du,Jindou Hu,Jing Xie,Aize Hao,Zhenjiang Lu,Yali Cao
The convenient modification of transition metal and the simultaneous adjustment of energy band are effective measures to improve the photocatalytic activity of titanium dioxide but remains challenging in photocatalytic hydrogen evolution field. Herein, In(OH) 3 -TiO 2 heterostructures were constructed by solid-state synthetic strategy under room temperature for tuning the band structure and accelerating the photoexcited charge separation to enhance the photocatalytic activity for hydrogen evolution. By the quantified modification of In(OH) 3 , the obtained In(OH) 3 -TiO 2 delivers an appreciable photocatalytic activity and stability for hydrogen evolution, which is 15.7 folds superior to commercial P25. Due to the narrowed band gap, the increased charge carrier density, the restrained recombination rate of photoexcited electron-hole pairs and the accelerated photogenerated charge separation, the In(OH) 3 -TiO 2 heterostructures thereby achieve the boosted photocatalytic hydrogen evolution performance. This work provides a feasible strategy to enhance the photocatalytic hydrogen evolution of TiO 2 via tuning the band gap and accelerating the photoinduced charge separation.
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2022
·
IF 4.331
Zhiwei He,Hanqing Wu,Zhen Shi,Xianming Gao,Yuping Sun,Xianguo Liu
Oceanic oil spill and the discharge of industrial oily wastewaters can cause significant threats to the ecological environment and human health. Herein, we design a durable TiO2/PDA-based superhydrophobic paper for efficient oil/water separation. Bioinspired from mussel adhesive proteins, the mechanical durability of the as-prepared superhydrophobic paper is enhanced by the deposition of polydopamine (PDA) onto cellulosic fibers via self-polymerization of dopamine. The TiO2/PDA-based superhydrophobic paper shows a high water contact angle of 168.2° and an oil contact angle of ∼0°, exhibiting excellent superhydrophobicity and superoleophilicity. Furthermore, the as-prepared superhydrophobic paper possesses excellent chemical stability, thermal stability, and mechanical durability in terms of being immersed in corrosive solutions and solvents and boiling water and being subjected to the sandpaper abrasion test, respectively. More importantly, the separation efficiency of the TiO2/PDA-based superhydrophobic paper for an oil/water mixture is 97.2%, and it maintains a separation efficiency above 94.3% even after 15 cyclic separation processes. Furthermore, the separation efficiency for water-in-oil emulsions is higher than 93.7% after 15 cyclic separation tests, showing its excellent recyclable stability for water-in-oil emulsions. Therefore, the rationally designed TiO2/PDA-based superhydrophobic paper shows great potential in the practical applications of self-cleaning, antifouling, and oil/water separation.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MATERIALS RESEARCH INNOVATIONS
·
2022
·
IF 0
Shridevi Salagare,Prashanth Shivappa Adarakatti,Suma B P,Yarradoddappa Venkataramanappa
A nitrite sensing platform has been constructed using a TiO2-reduced graphene oxide (RGO) nanocomposite incorporated into a glassy carbon electrode. Reduced graphene oxide is integrated in a simple technique for the manufacture of titanium dioxide (TiO2). Spectroscopic and electrochemical techniques have all been used to characterise the TiO2- RGO nanocomposite. In 3 mM and pH 6.0 phosphate buffer solutions, the TiO2-reduced graphene oxide nanocomposites tailored glassy carbon electrode demonstrated outstanding electro-catalytic nitrite oxidation activity. The square root of scan rate is also proportional to the oxidation peak current, showing that the nitrite redox reaction involves a diffusion-controlled mechanism. Using linear sweep voltammetry, the sensitivity and detection limit for nitrite at the modified electrode were determined to be 4.853 μA/μM cm2 and 0.006 µM respectively, over a concentration range of 10 - 2000 µM. Further, the nanocomposite is used to measure NO2- in water and buttermilk samples quantitatively.
✓ 已验证
产品关联
DOI
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Wen Luo,Jing Rong,Wanxia Zhao,Keke Kang,Lulu Long,Xiaojiang Yao
CeO 2 –TiO 2 catalysts with four different morphologies were successfully synthesized by a hydrothermal method and tested for selective catalytic reduction of NO x with NH 3 (NH 3 –SCR). For the four catalysts, CeO 2 –TiO 2 nanocubes (CT–NC) and nanorods (CT–NR) preferentially exposed {1 0 0} and {1 1 0} facets, respectively; furthermore, nanosheets (CT–NS) and nanospheres (CT–NH) mainly exposed {1 1 1} facet. Interestingly, CT–NH catalyst showed the best NH 3 –SCR performance and the NO x conversion exceeded 97% at 325 °C. Through a series of characteristic methods manifested that the short–range ordered structure of Ce–O–Ti in CT–NH catalyst provided stronger surface acidic sites to promote the high–temperature activity. Moreover, the abundant Ce 3+ species and appropriate reduction ability on {1 1 1} facet of CT–NH catalyst also caused outstanding de NO x activity. Reaction mechanism study showed that the Langmuir–Hinshelwood (L–H) mechanism and Eley–Rideal (E–R) mechanism existed simultaneously on all catalysts in NH 3 –SCR reaction. Meaningfully, two types of E–R mechanism were present on CT–NH catalyst, while L–H mechanism was dominant.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Shanshan Wu,Yefeng Feng,Kaidan Wu,Wenqin Jiang,Zhifeng Xue,Deping Xiong,Li Chen,Zuyong Feng,Kunhua Wen,Zhaoying Li,Miao He
Ti 3 C 2 /TiO 2 /rGO nanosheets were synthesized as anode materials for potassium ion batteries (KIBs) using modified Hummers, freeze drying, and thermal reduction in this paper. Layered Ti 3 C 2 /TiO 2 /rGO nanosheets were synthesized by in-situ formation of rGO and TiO 2 nanoparticles between Ti 3 C 2 layers. As one of the most important members of MXenes family, Ti 3 C 2 exhibits unique electronic characteristics, high specific surface area, strong electrical conductivity and chemically active surface, which can enhance electrode capacity. There are three ways to increase electrode conductivity and capacity: Firstly, rGO is applied as the substrate for the inlaying of TiO 2 and Ti 3 C 2 nanoparticles and nanosheets. Secondly, rGO may also buffer electrode volume changes during charging and discharging processes. In addition, the enormous surface area of rGO makes Ti 3 C 2 and TiO 2 nanoparticles dispersion well, and Ti 3 C 2 and TiO 2 nanoparticles can well separate rGO nanoparticles and prevent them from stacking up again. The synergistic effect of the three can efficiently relieve the stress and provide a rapid transport pathway between electrons and ions. The flake structure of Ti 3 C 2 /TiO 2 /rGO is advantageous to the stability of SEI film, which makes the material maintain good activity during charge and discharge process, and significantly increases its electrochemical performance. Therefore, Ti 3 C 2 /TiO 2 /rGO electrode has a high reversible capacity of 349.2 mAhg −1 after 200 cycles of 100 mAg −1 current, and a high stable capacity of 229.3 mAhg −1 after 500 cycles of 500 mAg −1 current, and has exceptional rate performance. The structure of Ti 3 C 2 /TiO 2 /rGO composite remains stable after 500 cycles, and no agglomeration occurs. The detailed reaction mechanism of Ti 3 C 2 /TiO 2 /rGO electrode as KIBs anode was analyzed by SEM, XRD , Raman, TGA , FT-IR, BET, TEM, XPS , EDS , CV, EX-situ XRD, ex-situ TEM, and so on. Therefore, it can be concluded that the Ti 3 C 2 /TiO 2 /rGO composite is an appropriate anode material for KIBs.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
·
2022
·Vol. 46
·期 13
·19221-19232
·
IF 4.672
Vi Thuy Thi Phan,Toan Minh Pham,Hau Quoc Pham,Tai Thien Huynh,Thi Hong Tham Nguyen,Van Thi Thanh Ho
Summary Highly stable and cost-effective electrocatalysts are of importance in regulating energy conversion efficiency and commercial feasibility of direct methanol fuel cells (DMFCs). So far, integrating transition metals into Pt-based catalysts to enhance their catalytic performances for methanol electro-oxidation reaction (MOR) at the anode of DMFCs has received significant interest. This study witnessed the first time of depositing Pt 3 Co 1 alloy nanoparticles (NPs) on robust Ti 0.9 Ir 0.1 O 2 supports utilizing a modified reduction method that used NaBH 4 as a reducing agent in the absence of surfactants or stabilizers. This novel combination not only reduces the usage of costly and easily-deactivated Pt but also significantly improves catalytic activity and poisoning tolerance for MOR. Regarding electrocatalytic performance, the onset potential and the mass activity of the Pt 3 Co 1 /Ti 0.9 Ir 0.1 O 2 catalyst are ~0.1 V vs NHE and 316.16 mA/mg Pt , respectively, which are 4.5-fold lower and 1.5-fold higher than the corresponding figures for the commercial Pt/C (E-TEK) catalyst, ~0.45 vs NHE and 206.83 mA/mg Pt , indicating superior catalytic activity and CO-tolerance of the former over the latter. Furthermore, the superior anti-poisoning ability and stability of the Pt 3 Co 1 /Ti 0.9 Ir 0.1 O 2 catalyst are demonstrated by its 2.2-fold higher I f /I b ratio in MOR and lower degradation rate in the 60-min chronoamperometry (CA) and 3000-cycle scanning tests than the Pt/C counterpart. These enhancements could be abscribed to synergistic influence between the Pt-Co alloy NPs and the robust Ti 0.9 Ir 0.1 O 2 support. The addition of Co into the catalyst to promote removal of Pt-poisoning species as well as the use of highly corrosion-resistant Ir-doped TiO 2 as a catalyst support play a decisive role in boosting electrochemical behaviors of the Pt 3 Co 1 / Ti 0.9 Ir 0.1 O 2 catalyst. Generally, the success of this work in synthesizing high-performance Pt 3 Co 1 /Ti 0.9 Ir 0.1 O 2 catalyst could serve as groundwork for further development of TiO 2 -based material supported bimetallic catalysts for applications in the electrochemical catalysis field.
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Ruili Li,Guoqing Xiao,Chunlin Chen,Chunyan Chen,Shuyi Shang,Yuanyuan Li,Zhengwei Yang,Qian Liu
Textile wastewater pollution with dyes has become a major source of water pollution. In the study, GO and composite nanospheres (CNS@LDH and HOTiO 2 ) were used to form the composite materials by electrostatic self-assembly method, and the composite materials vacuum filtration on the surface of CA membrane to prepare the composite membranes for dyes separation. Among them, GO was used as a vertical separation layer in dyes separation, while the hollow structure of HOTiO 2 nanosphere with a large specific surface area provided more adsorption sites, and the CNS@LDH nanosphere with core–shell structure played the role of expanding GO sheets and preventing HOTiO 2 from collapsing. Compared with the GO membrane, the water flux of three dyes produced by GO/HOTiO 2 /CNS@LDH composite membrane increased by 18 times with a rejection rate of 99%. In addition, after 10 cycles of experiments, GO/HOTiO 2 /CNS@LDH composite membrane retained a rejection rate of over 98% with the flux of 79 L∙m −2 ∙h −1 ∙bar −1 for MB. GO/HOTiO 2 /CNS@LDH composite membrane retained a stable rejection rate on three dyes under extreme pH and ionic strength conditions. The composite membrane combined the adsorption and isolation effects of GO, HOTiO 2 , and CNS@LDH, which significantly enhanced the separation performance of dye wastewater. Accordingly, the GO/HOTiO 2 /CNS@LDH composite membrane has great potential in practical wastewater treatment.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Jiali Luo,Jing Cao,Guangrong Ma,Xue Wang,Yu Sun,Cong Zhang,Zhan Shi,Yiqing Zeng,Tao Zhang,Pintong Huang
Sonodynamic therapy (SDT), a noninvasive therapy that relies on sonosensitizers and generates reactive oxygen species (ROS), has attracted considerable attention in the treatment of pancreatic cancer. However, being surrounded by dense stromal barriers, pancreatic cancer exhibits high interstitial fluid pressure (IFP) and hypoxia in the tumor microenvironment (TME), resulting in poor SDT efficacy. Collagenase-loaded hollow TiO2 (Col-H-TiO2) nanoparticles (NPs) capable of degrading stromal barriers and producing sufficient ROS production were synthesized in this study. After administration of NPs in the patient-derived xenograft (PDX) model, ultrasonic irradiation-released collagenase degraded tumor matrix fibers, decreased intratumoral IFP, and enhanced the penetration and retention of NPs within tumor tissues. Moreover, the NPs accumulated within the tumor not only generate abundant ROS under the influence of ultrasound irradiation but also improve intratumoral ultrasound signal, providing ultrasonic imaging-guided highly effective SDT for pancreatic cancer. In conclusion, this research improves the SDT technique and enhances the visualization of pancreatic cancer by remodeling the TME and is a promising strategy for further clinical applications.
✓ 已验证
DOI
PubMed
高影响因子
Biomedical Materials
·
2022
·Vol. 17
·期 4
·045025
·
IF 4.103
Mingchao Jin,Juli Zhu,Zhipeng Meng,Xuesheng Jiang,Zhuo Chen,Juntao Xu,Hongliang Gao,Junkun Zhu,Fengfeng Wu
Titanium dioxide (TiO2), as one of the titanium (Ti)-based implants, holds a promise for a variety of anti-bacterial application in medical research. In the current study, a functional molybdenum disulfide (MoS2)/polydopamine (PDA)-LL-37 coating on titanium dioxide (TiO2) implant was prepared. Anodic oxidation and hydrothermal treatment was given to prepare TiO2 nanotubes-MoS2/PDA-LL-37 (T-M/P-L). The in vitro osteogenic effect of T-M/P-L was evaluated by measuring mesenchymal stem cell (MSC) adhesion, proliferation, alkaline phosphatase (ALP) activity, extracellular matrix (ECM) mineralization, collagen secretion and osteoblast-specific messenger RNAs (mRNAs) expression. The determination on the anti-bacterial ability of T-M/P-L was followed. Furthermore, the ability of T-M/P-L to promote bone formation in vivo was evaluated. Near-infrared (NIR) laser irradiation exposure enabled the T-M/P-L coating-endowed Ti substrates to hold effective anti-bacterial ability. T-M/P-L promoted the adhesion and proliferation of MSCs. In addition, an increase was witnessed regarding the ALP activity, collagen secretion and ECM mineralization, along with the expression of runt-related transcription factor 2, ALP and osteocalcin in the presence of T-M/P-L. Additionally, T-M/P-L could stimulate endothelial cells to secrete vascular endothelial growth factor (VEGF) and promote capillary-like tubule formation. Upon NIR laser irradiation exposure, T-M/P-L not only exhibited efficient in vivo anti-bacterial activity but also facilitated new bone formation. Collectively, T-M/P-L had enhanced anti-bacterial and osteogenic activity under NIR laser irradiation.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
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.
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Ming Xiao,Ruixue Li,Xinyu Hu,Wenke Zhu,Zhuo Yu,Hongbo Xiao,Wenlei Wang,Ting Yang
This paper is focused on the functional photocatalyst of in-situ carbon-doped TiO 2 decorated Fe 3 O 4 heterojunctions (C/TiO 2 @Fe 3 O 4 ) for the efficient photocatalytic oxidation of As(III). Series of characterizations show that the photocatalytic activity of TiO 2 changes from a single UV wavelength to visible light excitation when carbon atoms are successfully doped in the TiO 2 lattice, expanding the utilization rate of light energy. DFT calculation further confirmed that the C–O–Ti bonds can diminish the theoretical band-gap of TiO 2 . Furthermore, the successful construction of C–O–Ti and Ti–O–Fe interface bonds provide pathways for fast electron transfermation, which can effectively prompt the separation of photo-generated carriers and enhance the photocatalytic oxidation efficiency of As(III). The application results showed that the synthesized C/TiO 2 @Fe 3 O 4 photocatalyst by introducing Fe 3 O 4 with a mass fraction of 1% can complete the transformation of As(III) (10,000 μg/L, 40 mL) to As(Ⅴ) within 12 min under visible light irradiation. In addition, C/TiO 2 @Fe 3 O 4 exhibits excellent reusability, which remains 100% photooxidation efficiency of As(III) without changing crystal structure after 6 cycles and can also be recovered completely with magnet. The remarkable photocatalytic oxidation performances of C/TiO 2 @Fe 3 O 4 can be ascribed to the synergistic effects of OH, O 2 − and h + in the photocatalytic oxidation process and the constructed C–O–Ti and Ti–O–Fe interface bonds.
✓ 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）