Energies
·
2022
·Vol. 15
·期 22
·8542
·
IF 3.252
Yue Zhang,Ruixing Li
Nanoscale tungsten bronze can convert near-infrared light into thermal energy. For a chemical synthesis, intermediate products and processes are potentially positive or negative to an end product. In this study, (NH4)2SO4was added into the hydrothermal system of WO3, CsCl, CH3CH2CHO, and NH3·H2O to increase the Cs/W ratio in solution. An intermediate, Cs1.1W1.65O5.5, was isolated. Subsequently, it was confirmed via a kinetics experiment conducted for different times. The results of the NH3·H2O and NH4COOCH3system indicate there are two influence factors that influence the formation of Cs1.1W1.65O5.5: the leaching out of W and imine reactions. A low leaching out rate induces a high Cs/W ratio and low-concentration W in solution, leading to the formation of Cs1.1W1.65O5.5. The imine reaction decreasing CH3CH2CHO restrains the reduction in Cs1.1W1.65O5.5. The increase in CH3CH2COO−with the reduction reaction results in both the micron-size sticks and nano-size equiaxial particles in powder.Keywords:cesium tungsten bronze;intermediate;hydrothermal;synthesis;near-infrared response
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2019
·
IF 13.903
Mingxing Zhao,Wei Xia,Yang Wang,Man Luo,Zhen Tian,Yanfeng Guo,Weida Hu,Jiamin Xue
Two-dimensional (2D) materials with narrow band gaps (∼0.3 eV) are of great importance for realizing ambipolar transistors and mid-infrared (MIR) detections. However, most of the 2D materials studied to date have band gaps that are too large. A few of the materials with suitable band gaps are not stable under ambient conditions. In this study, the layered Nb2SiTe4 is shown to be a stable 2D material with a band gap of 0.39 eV. Field-effect transistors based on few-layer Nb2SiTe4 show ambipolar transport with a similar magnitude of electron and hole current and a high charge-carrier mobility of ∼100 cm2 V–1 s–1 at room temperature. Optoelectronic measurements of the devices show clear response to an MIR wavelength of 3.1 μm with a high responsivity of ∼0.66 AW–1. These results establish Nb2SiTe4 as a good candidate for ambipolar devices and MIR detection.
研究领域:
材料科学
·
电子工程
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Micro & Nano Letters
·
2021
·Vol. 16
·期 12
·582-590
·
IF 1.102
Runhuai Yang,Shilu Zhu,Lijiu Zhang,Fuzhou Niu,Shuang Liu
Soft untethered microswimmers have recently been demonstrated to be capable of transporting and delivering cargos by external control while maintaining biocompatibility and safety. However, such microswimmers still suffer from complex and inconvenient fabrication processes and control methods, which impedes their clinical translation. In this paper, an easy-to-fabricate, magnetic-driven and IR-induced shape transformative microswimmer is presented. This microswimmer can be fabricated in a fast, low-cost and high-throughput manner. Besides, the soft body of the microswimmer can provide an inherent friendly contact with the biological environment, and its components are biocompatible and biodegradable. Being magnetically-drivable allows the microswimmer to provide untethered movement and targeted therapy in the human body, and its IR-induced shape transformability enables penetrable regulation of the movement and function. Furthermore, the shape of the untethered microswimmer can be transformed due to its combination of low melting behaviours and multi-response materials, suggesting that other materials with similar properties can also be adopted in a similar method. The proposed method validates the feasibility to integrate polymers for fabricating magnetic-driven, infrared-responsive and shape transformative microswimmers.
研究领域:
医学工程
·
材料科学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2020
·Vol. 8
·期 18
·8934-8948
·
IF 11.301
Ran Wei,Jiabei Guo,Lunqiang Jin,Chao He,Yi Xie,Xiang Zhang,Weifeng Zhao,Changsheng Zhao
As an important type of smart membrane, stimuli-responsive membranes with switchable separation capability and permeability are urgently needed for developing advanced filtration membranes. In this study, smart membranes with anion-/near-infrared (NIR)-responsive and improved anti-fouling properties were fabricated by introducing poly(ionic liquid) (PIL) modified Fe3O4 nanoparticles on the surfaces and pore channels of polyethersulfone membranes through the vapor induced phase separation (VIPS) method. Thanks to the anion-/NIR-responsiveness of the nanoparticles, adjustable surface wettability and pore sizes of the membranes were obtained. The fluxes of the membranes were well-controlled along with adjusting the sizes of the nanoparticles via anion-exchange and NIR irradiation. The switchable pore size was further demonstrated by the filtration of polyethylene glycol (PEG)-800 and PEG-2000. In addition, the wettability and zeta-potential of the membrane surfaces could be adjusted by exchanging the counteranions of the immobilized PIL nanoparticles, which endowed the membranes with robust anti-fouling abilities toward biological contaminants like bovine serum albumin when changing the counteranions from hydrophilic to hydrophobic. After the counteranion exchange desorption, the intelligent membranes were then self-cleaned.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
MACROMOLECULAR RAPID COMMUNICATIONS
·
2024
·Vol. 45
·期 13
·2300737
·
IF 4.2
Ruyue Wang,Xingxing Chen,Yilong Cheng,Zicheng Ding,Xiaoqing Ming,Yanfeng Zhang
Near-infrared (NIR)-triggered shape memory hydrogels with promising mechanical strength hold immense potential in the field of biomedical applications and soft actuators. However, the optical and mechanical properties of currently reported hydrogels usually suffer from limited solubility and dispersion of commonly used photothermal additives in hydrogels, thus restricting their practical implementations. Here,, a set of NIR-responsive shape memory hydrogels synthesized by polyaddition of diisocyanate-terminated poly(ethylene glycol), imidazolidinyl urea (IU), and p -benzoquinone dioxime (BQDO) is reported. The introduction of IU, a hydrogen bond reinforcing factor, significantly enhances the mechanical properties of the hydrogels, allowing for their tunable ranges of the ultimate tensile strength (0.4–2.5 MPa), elongation at break (210–450%), and Young's modulus (190–850 kPa). The unique hydrogels exhibit an intrinsic photothermal effect because of the covalently incorporated photothermal moiety (BQDO), and the photothermal supramolecular hydrogel shows controllable shape memory capabilities characterized by rapid recovery speed and high recovery ratio (>90%). This design provides new possibilities for applying shape memory hydrogels in the field of soft actuators.
研究领域:
生物材料学
·
高分子化学
·
生物医药工程
✓ 已验证
DOI
高影响因子
EUROPEAN POLYMER JOURNAL
·
2025
·
IF 6.3
Jinyun Cai,Haiyi Zhong,Wenlin Zhou,Ziqi Zhu,Kunying Yu,Peiyuan Li
The use of antibacterial hydrogel with biocompatibility has gained attention in wound healing due to the proliferation of drug-resistant microorganisms caused by antibiotic misuse, which slows down the healing process of skin wounds. This research employed a hydrogel that responds to both pH and near-infrared (NIR) in order to facilitate the healing of infected wounds. The dual-network hydrogel was successfully produced by utilizing the freeze–thaw method, which consists of secure components like ammonium alginate (AA) and polyvinyl alcohol (PVA). Polydopamine-curcumin (PDA-Cur) nanoparticles were prepared and loaded into the hydrogel. The medications could come out of the AA/PVA@PDA-Cur hydrogel (Gel-PC) when required under NIR laser irradiation. The incorporation of Curcumin provided the hydrogel with excellent antibacterial capabilities. Meanwhile, NIR radiation activated the photothermal PDA nanoparticles in the Gel-PC, generating localized thermal therapy to eliminate bacteria. In vivo treatment of mice on a Staphylococcus aureus -infected alloplastic defect model demonstrated that the Gel-PC had excellent antibacterial and wound-healing properties, leading to a reduction in inflammation. Gel-PC stimulated angiogenesis, collagen deposition, and the development of granulation tissue. Consequently, Gel-PC offered a tactical alternative for creating antibacterial wound dressings in conjunction with photothermal therapy and may find use in the treatment of infected wounds.
研究领域:
生物材料学
·
医学
·
药剂学
✓ 已验证
产品关联
DOI
高影响因子
RESEARCH ON CHEMICAL INTERMEDIATES
·
2018
·Vol. 44
·期 10
·6369-6385
·
IF 1.674
Chen Zhangxu,Fu Ming-Lai,Huang Xiao-Dan,Yuan Baoling,Yang Jia-Cheng E.
To enhance photocatalytic activity spectra area of the TiO 2 based photocatalyst, and to separate and recycle photocatalyst easily, magnetic photocatalyst was prepared with β-NaYF 4 :Yb 3+ ,Tm 3+ , TiO 2 , Fe 3 O 4 as carriers, and tetraethyl orthosilicate as precursor. The magnetic infrared responsive photocatalysts were thoroughly characterized by field emission scanning electron microscopy, X-ray diffraction, a fluorescence spectrometer and UV–Vis–NIR diffuse reflectance spectroscopy. They showed that the composite of β-NaYF 4 :Yb 3+ ,Tm 3+ /TiO 2 /Fe 3 O 4 @SiO 2 (UCTFS) emits visible luminescence upon 980 nm excitation, and energy transfer from β-NaYF 4 :Yb 3+ ,Tm 3+ to TiO 2 was verified. The photocatalytic activities of the UCTFS were studied by orthogonal experiments for photodegradating methylene blue (MB). The degradation rate of MB can reach 86.69% under the optimal conditions. After the four recycles, the degradation rate remained 52.72%. It also showed that 50.27% of the degradation efficiency of phenol can be obtained under the same experimental parameters. These results suggest that magnetic UCTFS composite is stable and a magnetic NIR-driven photocatalyst for degradation of organic pollutants. Moreover, the NIR driven photocatalytic mechanism of this reported composite was proposed. The strategy suggested here may be indicated for the effective fabrication of magnetic NIR-driven photocatalyst for application in the water purification by full spectra of solar energy.
研究领域:
材料科学
·
环境科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
PEST MANAGEMENT SCIENCE
·
2021
·Vol. 77
·期 11
·4960-4970
·
IF 4.845
Wenneng Wu,Minghui Wan,Qiang Fei,Yu Tian,Saijie Song,He Shen,Jian Shen
BACKGROUND Stimuli-responsive pesticide controlled release system provides a new strategy for the development of high-efficiency pesticides formulation. RESULTS In this article, we report a novel polydopamine surface modified MXene-Ti 3 C 2 T x nanocarrier for pesticide delivery and plant protection. Polydopamine modified Ti 3 C 2 T x (PDA@Ti 3 C 2 T x ) nanocarrier was prepared by biomimetic self-polymerization of dopamine on the surface of Ti 3 C 2 T x . A typical pesticide, emamectin benzoate (EB), was loaded on PDA@Ti 3 C 2 T x through physisorption process, with a high pesticide loading rate of 45.37%. PDA@Ti 3 C 2 T x exhibited excellent photothermal conversion effect ( η = 34.5%). Under the irradiation of near-infrared (NIR) laser, EB would sustained release from PDA@Ti 3 C 2 T x nanocarrier to surrounding medium. Compared with free EB, EB@PDA@Ti 3 C 2 T x exhibited prolonged persistence period, which can keep antipest activity at 14 days post spraying. In addition, PDA@Ti 3 C 2 T x nanocarrier and EB@PDA@Ti 3 C 2 T x nanoformulation are of good safety, showing no side effect to the seed germination and seedling growth. CONCLUSION This research developed a novel nanocarrier for water-insoluble pesticide delivery, realizing NIR-responsive controlled release and sustained antipest activity.
研究领域:
植物保护
·
材料科学
·
农业科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Changyang Li,Peng Wang,Dun Zhang,Sai Wang
Synergistic self-healing materials and inorganic particles to create self-healing superhydrophobic surfaces for improving their robustness is a common technique, but the suitability between the two is rarely mentioned. In this work, we developed a multifunctional superhydrophobic coating with room-temperature stability, mechanical stability, self-healing, and NIR stimuli response, in which self-healing polyurethane (PU) serves as the interface reinforcement layer and poly(dopamine) (PDA)-coated flower-like ZnO composite particles serve as the hydrophobic layer. A series of temperature-dependent self-healing PU materials were designed and synthesized by regulating the ratio of hard and soft chain segments in PU, and the relationship between the healing temperature of PU and the hydrophobic stability of the composite coatings was investigated. Based on dynamic hydrogen and disulfide bonds, PUs displayed excellent self-healing performance. Thanks to the self-healing and interfacial strengthening effect of PU and the photothermal properties of PDA, the composite coating exhibits not only excellent mechanical stability but also rapid self-healing ability in response to NIR stimuli. Furthermore, the smart coating demonstrated superior self-cleaning and corrosion resistance. This work provides a reference for developing strong and stable water-repellent reversible superhydrophobic coatings with great potential and promising future.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
OPTICAL MATERIALS
·
2019
·
IF 2.687
Yujie Luo,Shiyu Zhou,Yaofang Sun,Deqiang Zhao,Xiaosong Gu,Qiutong Yan,Fangying Ji,Xuan Xu
To further enhance the photocatalytic performance of BiOCl, a facile hydrothermal reduction reaction was used to synthesize the reduced graphene oxide- (rGO-) modified ternary compound photocatalyst β-NaYF 4 :Yb 3+ , Er 3+ @BiOCl-rGO (NYF–Bi-rGO). rGO prepared using a hydrothermal method showed good conductivity . Furthermore, the specific surface area of NYF-Bi-rGO was 20-fold larger than that of NYF, which is a quality that could prove highly advantageous for use in pollutant adsorption. In addition, the ternary photocatalytic system produced by rGO increased the absorption intensity of NYF-Bi in the visible light region, and caused a red-shift of the entire absorption cross-section. In particular, analysis of carrier migration showed the introduction of rGO promoted the separation of the photoelectron-hole pairs of BiOCl, inhibited its recombination and improved the photocatalytic efficiency of the ternary photocatalyst NYF-Bi-rGO.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
Surfaces and Interfaces
·
2024
·
IF 5.7
Hongqi Shi,Run Huang,Liujun Wu,Wanru Suo,Yunxiao Wang,Yusong Pan,Geliang Ren,Lei Huang
Designing new-type nanosystems to realize the combination of multiple treatment is an efficient routine to enhance the anti-tumor efficacy in clinic. In this study, molybdenum disulfide (MoS 2 ) was selected as a photothermal agent, and mesoporous silica (mSiO 2 ) was coated on the surface of MoS 2 using the solvothermal and template removal methods. The chemotherapeutic drug doxorubicin hydrochloride (DOX) as a model drug was then loaded into the above MoS 2 @mSiO 2 nanocarrier to prepare the tumor-targeting MoS 2 @mSiO 2 -DOX nanosystem. XRD, UV–Vis, FTIR, SEM, TEM, and DLS results jointly confirmed that the MoS 2 @mSiO 2 -DOX nanosystem with a particle size of approximately 370 nm was successfully synthesized. The XPS and BET analysis identified that the outer layer of MoS 2 @mSiO 2 nanocarrier was SiO 2 , which has a large surface area of 99.41 m 2 /g with an average pore size of 3.5 nm coated on the MoS 2 . The in-vitro cytotoxicity and photothermal performance of the MoS 2 @mSiO 2 nanodrug delivery system was tested, and the results show that MoS 2 @mSiO 2 has a low toxicity to normal human liver cells (HL-7702), and which also exhibits a good photothermal stability with a photothermal conversion efficiency of 28.8%. With the aid of the large specific surface area of mSiO 2 and the opposite zeta potential, a high amount of DOX was loaded on MoS 2 @mSiO 2 nanocarrier, and the measured loading efficiency of DOX can reach up to 48.87%. The 48 h-drug release rate of MoS 2 @mSiO 2 -DOX reaches 35.65% under the conditions of near infrared (NIR) laser irradiation at pH=5.0, which is nearly 5 times higher than that of 6.26% under the normal physiological environment (pH=7.4 without NIR laser irradiation), indicating that the MoS 2 @mSiO 2 -DOX nanosystem possesses obvious pH and NIR laser responsive release characteristics. The MoS 2 @mSiO 2 nanocarrier has good cytocompatibility, outstanding photothermal conversion and drug loading properties, and after DOX adsorption, the system exhibits excellent pH and laser responsive drug controlled release performance, which is expected to be widely used in the field of combining the photothermal-chemotherapy to synergistically resist tumor.
研究领域:
生物医学工程
·
肿瘤学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Qiaoqi Li,Fei Wang,Xiaoyan Liu,Wenhao Xu,Keyi Zhang,Siyuan Zhang,Pengfei Teng,Lili Zhang
Green processing of steel slag and lithium-ion battery liquid waste poses a global environmental challenge. This study utilizes waste acid (containing Co 2+ , H + and NO 3 – ) and alkali solutions (containing Li + , Na + , OH – and CO 3 2– ) from lithium-ion battery manufacturing to recover metal cations from steel slag (containing Ca 2+ , Mg 2+ , Al 3+ , Fe 3+ , and Mn 2+ ), preparing high-entropy CoCaMgMnAlFe-LDHs catalysts for controllable hydrogen generation via NaBH 4 hydrolysis. The ultimate residue, without any residual hazardous metal cations, enabling safe reintroduction into the natural environment. The presence of Co 2+ endows the CoCaMgMnAlFe-LDHs catalyst with rapid photo-thermal conversion capability, enabling it to rapidly heat up under infrared radiation and efficiently catalyze the reaction of NaBH 4 hydrolysis. The hydrogen generation rate reaches 1.12 mol·h −1 ·g −1 ·W −1 driven by 1050 nm infrared radiation. This study provides a novel approach to the environmentally friendly treatment and high-value utilization of steel slag and lithium-ion battery liquid waste.
研究领域:
环境科学
·
材料科学
·
能源科学
✓ 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）