SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2017
·
IF 4.784
Jing Zhao,Yanyang Yang,Yu Li,Liang Zhao,Hao Wang,Guolin Song,Guoyi Tang
Microcapsules with thermal energy storage and UV-shielding functions were successfully prepared by the method of suspension-like polymerization in order to reduce the damage of ultraviolet light . The bifunctional microcapsules (MPCMs/TiO 2 ) consist of n-octadecane as core material and poly (methyl-methacrylate) (PMMA) doped with titanium dioxide nanoparticles as shell material. The scanning electronic microscope (SEM) micrographs and particle size distributions showed that the as-prepared microcapsules are spherical and about 10–20 µm in average diameter. It was confirmed by Fourier transformation infrared spectroscope (FTIR) and energy dispersive spectrometer (EDS) spectra that modified TiO 2 nanoparticles had been well fixed in the cross-linked network structure of PMMA shell. In addition, the results of differential scanning calorimeter (DSC), thermogravimetric analyzer (TGA) and ultraviolet visible spectrophotometer (UV–vis) measurements demonstrated that the microcapsules exhibited high thermal storage capability, good thermal reliability and stability, and good UV-shielding property. The resultant samples of MPCMs/TiO 2 may become the potential materials in the advanced applications of intelligent textile .
✓ 已验证
产品关联
DOI
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2017
·
IF 7.78
Xiaoqiang Liu,Xiaohe Huo,Peipei Liu,Yunfei Tang,Jun Xu,Huangxian Ju
In this work, an ultrasensitive immunosensing scaffold was structured with TiO 2 nanowire (TiNW) arrays modified with molybdenum (Mo) and MoS 2 flakes by a triplex “etching, doping and deposition” technique. The triply modification of TiNW arrays improved their electron transfer , and the decoration of MoS 2 flakes on TiNW arrays increased both the conductivity and the specific surface area of TiNW. Accordingly, the triply modified TiNW arrays provided a biocompatible microenviroment for the biomolecules and high specific surface area to load big amount of biomolecules . The immunosensor was prepared by immobilizing capture antibody on the scaffold surface with double amino-reactive crosslinker , and the tracing labels were prepared by immobilizing signal antibody and horseradish peroxidase molecules on cylinder-shaped TiO 2 nanorods . After sandwich-type immunoreaction, the tracing labels were quantitatively captured on the immunosensor surface for the detection of carcinoembryonic antigen as a model analyte. This amperometric method showed a linear range of 0.001 and 150 ng mL −1 with a detection limit of 0.5 pg mL −1 . This work provided a promising platform for sensitive amperometric immunosensing of protein biomarkers.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2016
·Vol. 41
·期 2
·569-578
·
IF 3.277
Yuejiao Qin,Suhang Xun,Liangliang Zhan,Qingqing Lu,Minqiang He,Wei Jiang,Hongping Li,Ming Zhang,Wenshuai Zhu,Huaming Li
A series of WO3/TiO2 catalysts with a pore structure were successfully synthesized. The catalysts were systematically characterized and it was found that different calcination temperatures had great effects on the pore structure of the catalysts. The catalyst presented a mesoporous structure after calcining at 550 °C (expressed as 550-WO3/TiO2) and had the largest specific surface area among the mesoporous catalysts. The oxidation of dibenzothiophene (DBT) with 550-WO3/TiO2 catalyst reached 100% under optimum conditions. After recycling for 6 times, the oxidation of DBT could still achieve a DBT removal of 96.7%, suggesting that the catalyst had good stability and recycle performance. In addition, DBT sulfone (DBTO2) was proven to be the only oxidation product of DBT after the reaction, as observed by the GC-MS analysis. The catalytic activities of the catalyst on different substrates were also investigated, and the activities decreased in the order: DBT > 4-MDBT > 4,6-DMDBT > BT.
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2016
·
IF 2.758
Zhang Lan,Wanxia Wu,Sheng Zhang,Lanfang Que,Jihuai Wu
Highly ordered TiO 2 nanotube arrays are synthesized and utilized in preparing front-side illuminated photoelectrodes of CdS quantum-dot-sensitized solar cells (QDSSCs). The CdS quantum dots (QDs) are adsorbed on the ordered TiO 2 nanotube arrays by successive ionic layer adsorption and reaction method (SILAR). Taking the advantages of high surface area and large size of ordered pores of the TiO 2 nanotube arrays, the reaction solutions for SILAR processes can easily penetrate into the photoelectrodes; and the formed CdS QDs can be homogeneously dispersed on the TiO 2 nanotube walls with high coverage. In order to improve photovoltaic performance of QDSSCs, the other important components including counterelectrode, polysulfide (S 2− / S x 2 - ) electrolyte, and cycles of SILAR processes for preparing CdS QDs sensitized photoelectrodes are optimized. With thermally treated CuS counterelectrode, pure deionized water based polysulfide (S 2 − / S x 2 - ) electrolyte, and 15 cycles of SILAR processes prepared CdS QDs sensitized photoelectrode, the QDSSC can achieve the highest power conversion efficiency about 3.22% under full sunlight illumination (100 mW cm −2 , AM 1.5G), which is a comparative value among the pure CdS QDs sensitized solar cells.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2016
·
IF 5.557
Heng Shi,Yi He,Yang Pan,Haihui Di,Guangyong Zeng,Lei Zhang,Chunli Zhang
Binding nanoparticles on complex structured materials surface is an important issue for nanotechnology, such as obtain an superwetting surface. To fabricate a highly nanoparticles decorated polymer membrane with superior surface wettability , a facile and environmentally method stills remains challenge. Taken advantage from the mussel-inspired method, we reported here that the TiO 2 nanoparticles were directly anchored on the surface of poly(vinylidene fluoride) (PVDF) membrane, making the intrinsic hydrophobic polymer membrane become hydrophilic, what's more, the mussel inspired method was modified by introducing a silane coupling agent KH550, the ability to bind nanoparticles was retained and the as-prepared membrane turn from a common hydrophilic state to superhydrophilic state. Besides, the as-prepared superhydrophilic PVDF membrane could be applied on the separation of various kinds of surfactant stabilized oil-in-water emulsion with an ultrahigh efficiency nearly 99% and also shows durable oil resistance and antifouling performance, thus make the membrane easily to recycle. In addition, due to the universality of dopamine, this surface modification method should also be applicable on other organic–inorganic hybrid materials.
✓ 已验证
产品关联
DOI
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2016
·
IF 4.732
Xian Hou,Tongtong Xuan,Hengchao Sun,Xiaohong Chen,Huili Li,Likun Pan
ZnGa 2 O 4 :Eu 3+ nanophosphor was synthesized through a hydrothermal method and used as an effective light down-shifting/converting material in mesoporous TiO 2 layer of perovskite solar cells (PSCs). The nanophosphor can convert the high energy incident photon into the photon(s) with lower energy, which can excite CH 3 NH 3 PbI 3 to generate more photo generated electron–hole pairs, and thus promote the incident light use ratio and increase the power conversion efficiency (PCE) of PSCs. After the incorporation of suitable amount of ZnGa 2 O 4 :Eu 3+ into PSCs, the cell PCE is increased to 13.80% with a photocurrent density of 23.68 mA cm − 2 and a highest PCE of 14.34% with a photocurrent density of 25.02 mA cm −2 is achieved, much higher than those of the cell without ZnGa 2 O 4 :Eu 3+ (PCE of 10.67% and photocurrent density of 20.2 mA cm −2 ). The enhanced photovoltaic performance by incorporating the nanophosphor into PSCs should be ascribed to the increased incident light use ratio and improved exciton generation rate.
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials and Nanotechnology
·
2016
·
IF 1.109
JiaDong Chen,WeiSha Liao,Ying Jiang,DanNi Yu,MeiLing Zou,Han Zhu,Ming Zhang,MingLiang Du
In this study, novel titanium dioxide (TiO2) and zinc oxide (ZnO) hybrid photocatalysts in the form of nanofibres were fabricated by a facile method using electrospinning followed by a calcination process. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) were employed to investigate the morphology and structure of the heterogeneous nanofibres. The photocatalytic performances were evaluated via the photodegradation of Rhodamine B (RhB) under irradiation with UV light. Due to the low recombination rate of photo-induced charge carriers, the high utilization efficiency of UV light and the large contact area with the target molecules, the ZnO/TiO2 hybrid nanofibres exhibited high catalytic activity towards the Rhodamine B, and the amount of Zn(OAc)2 in the precursor of these nanofibres played an important role in determining the photo decomposition performance.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2015
·
IF 2.711
Zhiqiao He,Juntao Tang,Jie Shen,Jianmeng Chen,Shuang Song
TiO 2 nanosheets modified with various concentrations of sulfuric acid have been synthesized through hydrothermal treatment at 240 °C followed by heat treatment at 105 °C. Compared with untreated TiO 2 nanosheets, the H 2 SO 4 -modified samples exhibited markedly improved quantum yield (QY), energy returned on energy invested (EROEI), and turnover number (TON) for CO 2 reduction to CH 4 under visible-light irradiation. As supported by physical-chemical characterization, the enhanced photocatalytic activities can be attributed to acidification promoting the formation of hydroxyl groups (Brønsted acidic sites) and oxygen vacancies/Ti 3+ species. Thus, efficient charge separation and transfer to the TiO 2 surface for both CO 2 reduction and the accompanying H 2 O oxidation is facilitated. The highest activity for CO 2 photoreduction to CH 4 was obtained with TiO 2 nanosheets with 0.5 mol L −1 H 2 SO 4 , with QY, EROEI, and TON of 0.726‰, 0.335‰, and 83.124, respectively. Furthermore, the catalyst maintained stable performance throughout five successive recyclability test runs.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2017
·
IF 3.387
Zhaoqian Li,Mengyu Qi,Chunyan Tu,Weiping Wang,Jianrong Chen,Ai-Jun Wang
The extensive usage of chlorotetracycline (CTC) has caused the persistence of antibiotic residues in aquatic environments, resulting in serious threat to human health and ecosystems. In this study, graphene oxide/titanium dioxide (GO/TiO 2 ) nanocomposite was successfully synthesized via in situ hydrolysis of tetra- n -butyl titanate (Ti(BuO) 4 ) to TiO 2 particles on GO sheets and used as adsorbent for efficient adsorptive removal of CTC from aqueous solution. The prepared GO/TiO 2 was characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transformed infrared (FT-IR), Raman spectroscopy and X-ray photoelectron (XPS). Adsorption kinetics, isotherms and thermodynamics were systematically investigated to evaluate the adsorption properties of GO/TiO 2 . Adsorption mechanism was further analyzed by FT-IR, UV–vis and XPS. The results indicated that adsorption kinetics closely followed the pseudo-second order model; the maximum adsorption capacity determined by Langmuir model was 261.10 mg g −1 at 298 K and the thermodynamic studies revealed that the adsorption of CTC onto the GO/TiO 2 was a spontaneous and endothermic process. Moreover, the interactions between CTC and GO/TiO 2 were presumed to be ligand exchange between CTC and TiO 2 , while the π-π electron donor-acceptor interaction, hydrogen bond and cation-π bonding were constructed between CTC and GO. Finally, the prepared GO/TiO 2 was successfully applied for the efficient removal of CTC from Wu River water.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2016
·
IF 5.557
Zhiwei Xu,Tengfei Wu,Jie Shi,Kunyue Teng,Wei Wang,Meijun Ma,Jing Li,Xiaoming Qian,Cuiyu Li,Jintu Fan
A novel graphene oxide/TiO 2 -polyvinylidene fluoride (GO/TiO 2 -PVDF) hybrid ultrafiltration membrane has been successfully developed via the phase inversion technique by supplementing with GO/TiO 2 nanocomposites , in which the synergistic coupling of GO and TiO 2 could result in improved photocatalytic activity and endow hybrid membranes with photocatalytic antifouling function. Compared with PVDF membranes supplemented with TiO 2 and GO, respectively, the GO/TiO 2 -PVDF membrane displayed significantly improved photodegradation efficiency (improved about 50–70%) and superior photodegradation kinetics (1.0–1.5 times faster) toward bovine serum albumin (BSA). Moreover, flux performance and flux recovery ratio of membranes revealed that the GO/TiO 2 -PVDF membrane could recover high flux after fouling, which thus presented self-cleaning property under UV static irradiation. Besides, the GO/TiO 2 -PVDF membrane showed a water flux up to 487.8 L m −2 h −1 , more than 2 times that of the pristine PVDF membrane, while keeping high BSA rejection (92.5%). Therefore, the GO/TiO 2 -PVDF membrane would have good potential in water treatment due to its high-performance multifunctional characters, i.e. separation, photocatalytic oxidation and self-cleaning, etc.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Nanomaterials
·
2017
·
IF 1.871
Yaxiong Ji,Xing Rong,Hong Zhong,Yuanhao Wang,Shifeng Wang,Lin Lu
We report a brand new recycling route of waste marble powder, by means of surface modification with homemade nano-TiO2 particles to produce low cost coating materials for the application in air quality improvement. The as-prepared nano-TiO2 in anatase phase exhibits excellent photocatalytic characteristic, reflected by the high degradation rate of over 95% of methylene blue within 6 hours of UV irradiation. The prepared coating consisting of nano-TiO2 clad marble powder was tested by monitoring the decomposition rate of formaldehyde gas. A high degradation efficiency of about 95% within 9 hours of illumination is achieved, demonstrating a promising potential for removing the harmful and toxic organic pollutants in air while applying this coating in buildings both interiorly and exteriorly.
✓ 已验证
产品关联
DOI
高影响因子
Journal of the Taiwan Institute of Chemical Engineers
·
2017
·
IF 4.217
Meng Li,Zipeng Xing,Jiaojiao Jiang,Zhenzi Li,Junwei Yin,Junyan Kuang,Siyu Tan,Qi Zhu,Wei Zhou
A novel plasmonic Ag decorated S-TiO 2− x nanorods are successfully fabricated under 700 °C calcination, then followed by an in-situ solid-state chemical reduction approach with NaBH 4 in a mild calcination (350 °C) and combined with photo-deposition approach. The resultant Ag/S-TiO 2− x sample with high crystallinity and narrow band gap of ∼2.39 eV, extends the photoresponse to near-infrared region. The visible-light-driven photocatalytic degradation rate of phenol and hydrogen production rate for Ag/S-TiO 2− x nanorods are as high as 98.67% and 209.2 µmol h −1 g −1 , which is about 2 and 5 times higher than that of S-TiO 2 . Especially, first-order reaction rate constant of Ag/S-TiO 2− x nanorods is 14 times higher than that of S-TiO 2 . The excellent photocatalytic property can be attributed to the synergistic effect of Ti 3+ self-doping, S doping and the enhanced surface plasmon resonance of Ag nanoparticles, which narrows the band gap, favors the visible light utilization, and promotes the separation of photogenerated charge carriers.
✓ 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）