Small
·
2025
·
IF 12.1
Fukang Feng,Xiaoyu Zhang,Xinrui Han,Guangyu Wu,Weinan Xing
The efficiency of peroxymonosulfate (PMS) activation in photocatalytic processes critically depends on the regulation of electron transfer from generation to utilization. Herein, a holistic electron transfer pathway is constructed within a metal–organic frameworks (MOFs)-derived Cu-Cu x O/TiO 2 composite to achieve superior PMS activation. The incorporated Cu species serve as dynamic redox mediators, enabling an efficient non-photoinduced electron transfer pathway via Cu 0 &Cu n+ cycling. Simultaneously, the Cu-induced bandgap narrowing and abundant oxygen vacancies significantly enhance visible-light absorption and facilitate the rapid trapping of photogenerated electrons. This synergy establishes a continuous and highly efficient electron transfer from photoexcitation to catalytic reaction. The optimized catalyst Cu-Cu x O/TiO 2 -2 delivers an exceptional tetracycline hydrochloride (TC) degradation rate constant of 38.26 × 10 −3 min −1 , representing a 2.04-fold enhancement over pristine TiO 2 (18.74 × 10 −3 min −1 ). Mechanistic studies confirm that the radical ( • OH/ • SO 4 − ) and non-radical (h⁺) pathways function synergistically in the Cu-Cu x O/TiO 2 -2/PMS system, collectively enabling highly efficient TC degradation. Three plausible degradation routes are proposed based on intermediates identification and density functional theory (DFT) calculations. Furthermore, economic analysis is conducted to transition from mechanistic insight to practical value, assessing the commercial potential of the Cu-Cu x O/TiO 2 -2/PMS photodegradation system. This work provides valuable insights into the design of efficient composite catalysts through regulated electron transfer via dynamic redox cycling coupled with oxygen vacancy engineering.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Fengyan Xie,Chunlei Huang,Guofa Dong,Minghui Wu,Dongli Meng,Hongping Yang,Bingwen Zhang,Yafeng Li,Mingdeng Wei
The TiO 2 -based electron transport layer (ETL) holds significant potential for efficient perovskite solar cells (PSCs), yet challenges in interfacial defects and energy alignment limit performance. Herein, sulfur-doped graphitic carbon nitride (SCN) is incorporated into TiO 2 using a rapid glass-assisted annealing method to engineer the ETL. The SCN/TiO 2 composite enhances perovskite crystallization by suppressing PbI 2 secondary phases and improves interfacial compatibility. Additionally, optimized energy-level alignment facilitates electron extraction while reducing non-radiative recombination, as evidenced by photoluminescence and time-resolved spectroscopy. These synergistic effects yield a champion device with a power conversion efficiency (PCE) of 21.02%, surpassing the pristine TiO 2 -based counterpart (18.20%) by 16.6%, alongside elevated open-circuit voltage (V oc = 1.10 V) and short-circuit current density (J sc = 24.98 mA cm -2 ). This work demonstrates the efficacy of S-CN in addressing interfacial limitations, offering a scalable strategy to advance high-efficiency perovskite photovoltaics.
✓ 已验证
产品关联
DOI
高影响因子
VACUUM
·
2025
·
IF 3.9
Peng Zhang,Caijing Zhang,Fengjuan Miao,Bairui Tao
This study presents a nickel-foam supported TiO 2 /CuO/CuCo 2 O 4 composite electrode for dual-functional applications in non-enzymatic glucose sensing and supercapacitors. In glucose sensing performance tests, the TiO 2 /CuO/CuCo 2 O 4 electrode demonstrated a broad linear detection range (0.23–3.8 mM) and a high sensitivity of (715.2 ± 5) μA·mM −1 cm −2 , with a detection limit as low as 0.58 μM (signal-to-noise ratio, SNR = 3). Furthermore, the material exhibited outstanding performance in supercapacitor applications. Even at a high current density of 2 A g −1 , it maintained a specific capacity of up to (620 ± 15) C·g −1 , after 5000 cycles, the capacitance retention remained at (91.8 ± 0.3)%. The material's hierarchical porous structure and strong interfacial bonding contribute to its excellent performance, demonstrating great potential for multifunctional, high-efficiency energy storage and sensing materials.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Zhengwei Xu,Xiaohong Jiang
The inertness of titanium alloys restricts the high intensity of the biological bonding between artificial implants and human skeletons, and there is residual stress in hydroxyapatite (HA) coatings fabricated by the frequently applied plasma spraying method. With the intention to address the aforementioned two issues, combined utilization of constant current anodization and pulsed laser deposition (PLD) was conducted to fabricate HA/TiO 2 nano-porous composite coatings , and the as-fabricated samples were heat-treated under the selected appropriate conditions. The oxygen bubble mold theory has made a persuasive explanation for the growth mechanism of TiO 2 nano-porous arrays. The morphologies and composition of the composite coatings including the heat-treated ones were characterized by scanning electron microscope (SEM), energy dispersive spectrometer (EDS), grazing incidence X-ray diffraction (GI XRD) and X-ray photoelectron spectrometer (XPS). Through comprehensive analysis of the corrosion resistance in modified simulated body fluid (m-SBF) and growth efficiency of cocultured MC3T3-E1 cells in vitro, together with the characterization results, it is concluded that the sample heat-treated at 450 °C shows the most satisfactory performance in general. Therefore, the HA/ TiO 2 nano-porous composite coatings have broad application prospect in the osseointegration and bone repairing abilities of artificial implants.
✓ 已验证
DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2013
·
IF 4.387
Hongbo Li,Jing Li,Qin Xu,Zhanjun Yang,Xiaoya Hu
A novel visible light sensitized photoelectrochemical sensing platform was constructed based on the perylene-3,4,9,10-tetracarboxylic acid/titanium dioxide (PTCA/TiO 2 ) heterojunction as the photoelectric beacon. PTCA was synthesized via facile steps of hydrolysis and neutralization reaction, and then the PTCA/TiO 2 heterojunction was easily prepared by coating PTCA on nano-TiO 2 surface. The resulting photoelectric beacon was characterized by transmission electron microscope, scanning electron microscopy, X-ray diffractometry, FTIR spectroscopy, and ultraviolet and visible spectrophotometer. Using parathion-methyl as a model, after a simple hydrolyzation process, p-nitrophenol as the hydrolysate of parathion-methyl could be obtained, the fabricated derivative photoelectrochemical sensor showed good performances with a rapid response, instrument simple and portable, low detection limit (0.08 nmol L −1 ) at a signal-to-noise ratio of 3, and good selectivity against other pesticides and possible interferences. It had been successfully applied to the detection of parathion-methyl in green vegetables and the results agreed well with that by GC–MS. This strategy not only extends the application of PTCA, but also presents a simple, economic and novel methodology for photoelectrochemical sensing.
✓ 已验证
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2024
·
IF 4.4
Xiaoqing Lin,Asim Mushtaq,Muhammad Suhail,Yike Hou,Guohui Jing,Muhammad Arshad,M.Zubair Iqbal,Xiangdong Kong
Breast cancer is one of the most challenging malignancies in the present era, which continues to attract researchers to discover new therapeutic routes to combat tumors. Photodynamic therapy (PDT) has been promised to deal with malignancies as well as bacterial infections during surgery or afterward. In this study, copper doped titanium dioxide nanocomposites (Cu-TiO 2 NCs) are synthesized and modified by an FDA-approved triblock polymer (Pluronic® F-127) to enhance the biocompatibility and stability of NCs. PF-127 coating increased the hydrodynamic particle sizes to 190 nm for 1Cu-TiO 2 @PF-127 and 220 nm for 10Cu-TiO 2 @PF-127, while Cu doping raised the zeta potential to 6.64 mV, which shifted to −6.64 mV and −0.08 mV after PF-127 functionalization, indicating effective surface modification. This nano-assembly generated significant amount of reactive oxygen species and demonstrated 90 % cancer cell death after low-intensity UV irradiation (5.6 mW·cm −2 ), while maintaining more than 70 % survival of normal L929 cells, indicating low toxicity to healthy cells. Moreover, antibacterial analysis against Escherichia coli and Staphylococcus aureus bacterial strains proved excellent antibacterial features of Cu-TiO 2 NCs. Based on such outcomes, it can be expected that Cu-TiO 2 NCs have potential for future nanomedicines.
✓ 已验证
DOI
高影响因子
ACS Applied Nano Materials
·
2020
·
IF 0
Kunlei Zhu,Qian Li,Zhongmeng Xue,Qi Yu,Xicheng Liu,Zhongqiang Shan,Kai Liu
High cost, low safety, and low capacity are critical factors limiting the wide application of lithium (Li) batteries in our daily life. TiO2 and LiMn2O4 are both advanced electrode materials with advantages of low cost and high safety. Although TiO2/LiMn2O4 full batteries have been reported by several groups, these batteries only deliver low areal capacities (<1 mA cm–2), which is far from the criterion of commercially available Li-ion batteries (at least 2 mA cm–2). Here, we report high-areal-capacity TiO2/LiMn2O4 full batteries using a configuration containing anodes of mesoporous TiO2 spheres and cathodes of LiMn2O4 nanorods. Specifically, mesoporous TiO2 spheres are prepared by an improved solvothermal method, and their electrochemical performance is investigated using Li/TiO2 half-batteries. Because of their high specific areas, abundant pores, and stable structures, the mesoporous TiO2 spheres demonstrate remarkable cycling performances: after a test period as long as ∼1000 h, they still deliver a capacity as high as 150 mAh g–1 beyond 500 cycles at 1 C (1 C = 170 mAh g–1). LiMn2O4 nanorods are fabricated using β-MnO2 nanorods as the precursor, and their electrochemical performances are studied using Li/LiMn2O4 half-batteries as well. Furthermore, we design TiO2-limited TiO2/LiMn2O4 full batteries and investigate their electrochemical performances. The mesoporous TiO2 sphere/LiMn2O4 nanorod full batteries exhibit areal capacities as high as ∼4 mA cm–2, which is much higher than the values of conventional TiO2/LiMn2O4 full batteries and comparable to those of commercially available Li-ion batteries. This work could make a substantial step toward the commercialization of TiO2/LiMn2O4-based full batteries.
✓ 已验证
DOI
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2016
·
IF 8.328
Long Kong,Zhichun Li,Shouqiang Huang,Jinping Jia,Liang Li
Semiconductor quantum dots (QDs) are interesting photocatalysts for solar fuel production and environmental pollution control. However, the poor stability and recombination probability of photogenerated electron-hole pairs prevented the practical applications of QDs based photocatalysts. Herein we demonstrated that the incorporation of amorphous titania (TiO 2 ) coatings with CuInS 2 /ZnS-TiO 2 heterostructures (CIS/ZnS-TiO 2 gel) can markedly boost photocatalytic performance and stability for Cr (VI) reduction. The promoted photocatalytic activity of CIS/ZnS-TiO 2 gel is associated with the enhanced light-absorption and distinctive heterojunction imposed by the integration of CIS/ZnS-TiO 2 with amorphous TiO 2 coatings, which drastically speed the separation of photogenerated electron-hole pairs. Moreover, the physical protection and photocorrosion-inhibition functions (receptors of photogenerated holes from CIS/ZnS QDs) arised from the amorphous TiO 2 coatings were mainly responsible for the promoted photostability of CIS/ZnS-TiO 2 gel. Our CIS/ZnS-TiO 2 gel retained over 90% of its initial activity under cycle tests, while the bared CIS/ZnS-TiO 2 showed a distinct reduction (approximately 35%) of its original efficiency due to the photocorrosion and weight-loss. Obviously, the incorporation of amorphous TiO 2 along with its bulk appearance of gel realized the enhanced photocatalytic performance with a favorable cycling stability. This strategy could be extended to other QDs-based photocatalysts in improving photocatalytic performance toward practical application.
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2016
·
IF 7.145
Shuojian Su,Yanna NuLi,Zhenguo Huang,Qi Miao,Jun Yang,Jiulin Wang
Mg2+/Li+ hybrid batteries have recently been constructed combining a Mg anode, a Li+-intercalation electrode, and an electrolyte containing both Mg2+ and Li+. These batteries have been reported to outperform all the previously reported magnesium batteries in terms of specific capacity, cycling stability, and rate capability. Herein, we report the outstanding electrochemical performance of Mg2+/Li+ hybrid batteries consisting of a one-dimensional mesoporous TiO2(B) cathode, a Mg anode, and an electrolyte consisting of 0.5 mol L–1 Mg(BH4)2 + 1.5 mol L–1 LiBH4 in tetraglyme. A highly synergetic interaction between Li+ and Mg2+ ions toward the pseudo-capacitive reaction is proposed. The hybrid batteries show superior rate performance with 130 mAh g–1 at 1 C and 115 mAh g–1 at 2 C, together with excellent cyclability up to 6000 cycles.
✓ 已验证
DOI
高影响因子
JOURNAL OF RARE EARTHS
·
2018
·
IF 2.524
Zhijuan Wang,Song Dang,Shu'na Zhao,Lining Sun
Recently, much attention has been paid to the lanthanide luminescent materials based on the visible-light sensitization for their potential applications in the fields of bio-imaging and optical devices. In this work, the lanthanide complexes have been covalently bonded to the ordered mesoporous titania (OMT) matrix, and the resulting titania-based hybrid ordered mesoporous materials (named as LnDB-OMT, Ln = Eu, Sm, Yb, Nd) were characterized by using Fourier-transform infrared (FT-IR) spectroscopy, small-angle X-ray powder diffraction (SAXD), N 2 adsorption–desorption isotherms, transmission electron microscopy (TEM), fluorescence spectroscopy , and thermogravimetric analysis . Generally, exciting with visible light is advantageous over UV excitation. Of importance here is that, under excitation with visible light, the LnDB-OMT all show characteristic visible (Eu 3+ , Sm 3+ ) as well as near-infrared (Sm 3+ , Yb 3+ , Nd 3+ ) luminescence of the corresponding Ln 3+ ions (multicolor emission covered from 500 to 1400 nm spectral region), which is attributed to the energy transfer from the ligands to the Ln 3+ ions via an antenna effect.
✓ 已验证
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2021
·
IF 8.742
Yang Yang,Qiaoyun Lai,Sakil Mahmud,Jiangyan Lu,Gaosheng Zhang,Zehui Huang,Qihang Wu,Qingyi Zeng,Yongshi Huang,Huifang Lei,Zhu Xiong
Herein, a dense rutile nano-titanium dioxide (TiO 2 ) coating was constructed on the nonwoven fabric (NWF) membrane surfaces via the bio-inspired TiO 2 sol-gel method. The mineralization of nano-TiO 2 was large-scale and uniform on the non-woven fabrics (NWF) surface, reducing membrane surface roughness and pore sizes; nevertheless, largely improving the dynamic water super-wetting, water penetration, and underwater oil repellency due to the excellent water affinity. Nuclear magnetic resonance (NMR) revealed the hydration layer of the NWF was reinforced by the surface-mineralized nano-TiO 2 , thus preventing the bovine serum albumin (BSA) and emulsified oil droplets from fouling. Even after the 180 min of continuous emulsion separation, the mineralized NWF (TiO 2 -PDA/PEI-NWF-M) only suffered from the mild decline of permeation fluxes from ∼55 L/m 2 •h to ∼43 L/m 2 •h and oil rejection from ∼94% to ∼83%, respectively. After illuminated under UV light, it was recovered successfully because of the in-situ generation of reactive species ( e.g. •OH, •O 2 − and 1 O 2 ) on TiO 2 weakened the interaction of foulants on the membrane surface. The photoactive self-cleaning provided the TiO 2 -PDA/PEI-NWF-M with better efficiency of oil-fouling reduction, permeation fluxes recovery, and oil removal than those of simple water and harsh NaClO washing. Most importantly, the TiO 2 -PDA/PEI-NWF-M maintained its surface physical and chemical characteristics after vigorous cross-flow shearing for 48 h. It provided the practical potential in developing the high-efficient and free-chemical self-cleaning with the high and stable flux recovery for the tricky crude oil/water emulsion remediation.
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2024
·
IF 10.7
Jialin Zhuang,Lingchao Wang,Yingmo Hu,Yechen Wang,Liping Lin,Jiaying Xiao,Yunfan Chen,Xiaowei Li,Huiqiang Liu,Qian Zhang,Qi An
Photopiezocatalysts can take advantage of both solar light and environmental mechanical energy, holding high significance in building a sustainable society. However, designing high potent photopiezocatalysts remains challenging. In this study, we propose the asymmetric ternary heterojunction as an efficient strategy for achieving effective photopiezocatalysts. The BTO/PPy/TiO2 catalyst composed of BaTiO3 (BTO) and TiO2 nanosheets and polypyrrole (PPy) nanoparticles present both enhanced asymmetric interfacial charge separation as well as deformability under mechanical stimuli, leading to appealing photopiezocatalytic capabilities. The d33 of the ternary BTO/PPy/TiO2 heterojunction is 3.1 times that of the binary BTO/TiO2 counterparts. In-situ synchrotron-radiation-IR measurements indicates that electric fields excite electrons to higher energy levels and lead to larger electron densities in the heterojunction. The piezoelectric fields also enhance charge separations. Using cycled assembly, the ternary BTO/PPy/TiO2 heterojunctions are facilely constructed on a copper mesh substrate, and its application in effective photopiezocatalytic degradation reactions are demonstrated. We expect the study elucidate the mechanism underlining efficient energy conversion and application in the photopiezocatalytically active asymmetric heterojunction and inspire the design of efficient catalysts.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）