Polymers
·
2021
·Vol. 13
·期 4
·558
·
IF 4.329
Wenhui Zhu,Caiyun Zhang,Yali Chen,Qiliang Deng
Photothermal materials are attracting more and more attention. In this research, we synthesized a ferrocene-containing polymer with magnetism and photothermal properties. The resulting polymer was characterized by Fourier-transform infrared (FT-IR), vibrating sample magnetometer (VSM), scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and thermogravimetric analysis (TGA). Its photo-thermocatalytic activity was investigated by choosing methylene blue (MB) as a model compound. The degradation percent of MB under an irradiated 808 nm laser reaches 99.5% within 15 min, and the degradation rate is 0.5517 min−1, which is 145 times more than that of room temperature degradation. Under irradiation with simulated sunlight, the degradation rate is 0.0092 min−1, which is approximately 2.5 times more than that of room temperature degradation. The present study may open up a feasible route to degrade organic pollutants.
研究领域:
材料科学
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环境科学
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Gege He,Junsheng Wang,Xiaozhen Lv,Shun Lu
Hydrogen is increasingly acknowledged as a viable alternative to traditional fossil fuels. However, the photothermal properties of CoFe 2 S 4 , a photocatalyst displaying metal-like behavior, have not been adequately explored in the context of photocatalytic H 2 generation. To improve photocatalytic hydrogen evolution, it is crucial to understand how to expedite the transfer of photogenerated electrons and the dissociation of H-OH bonds for enhanced hydrogen ion release. Herein, a type-II heterostructure was constructed between CoFe 2 S 4 nanosheets and ZnIn 2 S 4 nanoparticles, a non-precious metal photocatalyst, which effectively separates photogenerated carriers and holes. More importantly, the photothermal effect and localized surface plasmon resonance (LSPR) effects induced by CoFe 2 S 4 improved the sluggish kinetics of water dissociation. The CoFe 2 S 4 /ZnIn 2 S 4 -5 photocatalyst achieved H 2 evolution rate of 6.84 mmol·g −1 ·h −1 , and an apparent quantum efficiency of 15.6 % at 400 nm, significantly enhancing the efficiency of photocatalytic splitting for hydrogen production. This work advances the application of metal CoFe 2 S 4 in solar-to-fuel conversion and offers valuable insights for designing semiconductor-based photothermally assisted photocatalytic systems.
研究领域:
材料科学
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能源科学
·
化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2022
·Vol. 10
·期 42
·22819-22833
·
IF 14.511
Renzhi Xiong,Changcun Tang,Kunjiao Li,Jiabao Wan,Weifeng Jia,Yanhe Xiao,Baochang Cheng,Shuijin Lei
It is an effective method to promote the activity of photocatalysts by exploiting their own photothermal effects to increase the temperature of the reaction center and thus accelerate the kinetic process of photocatalysis. In this study, for the first time, a CoCr2O4/g-C3N4 composite photocatalyst is designed through the construction of CoCr2O4 nanoparticles decorated tremella-like porous g-C3N4. On the one hand, the type-II heterostructure can be formed and effectively improves the separation efficiency of photogenerated carriers. On the other hand, the photothermal effect of plasmonic CoCr2O4 nanoparticles can significantly increase the temperature of the reaction system, thereby enhancing the photocatalytic efficiency. CoCr2O4 nanoparticles exhibit a broad-band strong absorption in the near-infrared region. Under full spectrum illumination for 300 s, their surface temperature can be increased by 113 °C, demonstrating excellent photothermal properties. Although the bare CoCr2O4 nanoparticle sample does not show the photocatalytic activity of water splitting for hydrogen evolution, the optimized g-C3N4/CoCr2O4 heterostructure composite exhibits an average hydrogen production rate as high as 1525.1 μmol g−1 h−1 under UV-Vis-IR illumination, which is 4.0 and 5.8 times higher than that of bare g-C3N4 under UV-Vis-IR and UV-Vis light illumination, respectively. This work provides a new guide for designing novel photothermal-assisted photocatalytic composite materials.
研究领域:
材料科学
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能源科学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Xitong Yang,Guowei Liu,Ruifeng Zhou,Zhengzheng Xie,Yamin Cheng,Muhammad Shuaib Khan,Qiuye Li
Catalytic desorption can reduce the activation energy of the reaction and increase the desorption reaction rate, and is one of the most promising technologies to solve energy consumption problems of CO 2 capture technology for organic amine solutions. In order to further reduce desorption energy consumption, we propose a new method of utilizing the photothermal effect of catalysts to increase desorption temperature and accelerate reaction kinetics, and coupling the proton transfer ability of the catalyst itself to form multifunctional catalysis. In this work, we synthesized Ru x Mn 1-x OOH catalyst by introducing Ru atoms at the Mn vacancies on the MnOOH surface, grasping the advantages of the photothermal and proton transfer ability of Ru-dopants. The results showed that the CO 2 desorption capacity increased by 43.1% with adding MnOOH compared to without a catalyst. The Ru-doped catalyst demonstrated a 54.7% increase in CO 2 desorption efficiency, with an additional 98.2% surge attributed to the in-situ photothermal effect generated by the catalyst under light irradiation. Characterization and density functional theory (DFT) calculations revealed that Ru doping significantly enhanced the proton transfer ability while simultaneously weakens the adsorption capacity of monoethanolamine (MEA) on the catalyst surface. Moreover, the stronger photothermal effect introduced by Ru leads to an increase in the surface temperature of the catalyst, which is key to the faster and efficient desorption of CO 2 . This work provides a new approach to improve the proton transfer ability of catalysts and offers a novel photothermal coupled catalytic scheme for CO 2 desorption in organic amine carbon capture technology.
研究领域:
化学工程
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催化材料
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Pengnian Shan,Kun Geng,Li Guo,Liqiang Kuang,Yu Shen,Bo Xiong,Jianhua Hou,Feng Guo,Guangzhao Wang,Weilong Shi
To advance the development of clean and sustainable energy, photocatalytic H 2 production emerges as an innovative technology that harnesses natural sunlight and water resources to address the current energy crisis. Based on significant contributions of the built-in electric field and photothermal effect for boosted photocatalytic hydrogen production, we developed a core–shell photocatalyst with Co spheres as the core and ZnIn 2 S 4 (ZIS) nanoflowers as the shell to achieve effective synergy between these two effects. Under the strong synergistic influence of the Schottky barrier and photothermal effect, this optimized photocatalyst achieved a maximum photothermal-assisted photocatalytic hydrogen evolution rate of 8.3 mmol g −1 h −1 , which is approximately 11 times that of the pure ZIS, with an apparent quantum efficiency (AQE) of 11.34 % under the wavelength of 420 nm. The Schottky barrier formed between ZIS and Co facilitates the transfer of electrons from Co to ZIS, while the photothermal effect increases the catalyst’s temperature and further enhances the separation efficiency of photogenerated electrons and holes. This work highlights the potential applications of the synergistic effects of Schottky junctions and photothermal effects in the conversion of solar energy into chemical energy.
研究领域:
材料科学
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能源转换
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2024
·
IF 12.2
Xuanting He,Jihan Lu,Jiaxiang Liu,Zixuan Wu,Boyu Li,Zhong Chen,Wenquan Tao,Zhuo Li
Effectively addressing crude oil spills remains a global challenge due to its high viscosity and limited flow characteristics. In this study, we successfully prepared a modified sponge (PCP@MS) by embedding the photothermal material of Co-HHTP and coating the melamine sponge (MS) with low-surface-energy polydimethylsiloxane (PDMS). The PCP@MS exhibited outstanding hydrophobicity with WCA of 160.2° and high oil absorption capacity of 59–107 g/g. The PCP@MS showed high separation efficiency of 99.2% for various oil-water mixtures, along with notable self-cleaning properties and mechanical stability. The internal micro-nano hierarchical structure on the sponge surface significantly enhanced light absorption, synergizing with the photo-thermal conversion properties of Co-HHTP, enabled PCP@MS to achieve a surface temperature of 109.2 °C under 1.0 solar light within 300 s. With the aid of solar radiation, PCP@MS is able to heat up quickly and successfully lowering the viscosity of the surrounding crude oil, resulting in an oil recovery rate of 8.76 g/min. Density functional theory (DFT) calculation results revealed that Co-HHTP featured a zero-gap band structure, rendering advantageous electronic properties for full-wavelength light absorption. This in situ solar-heated absorbent design is poised to advance the practical application of viscous oil spill cleanup and recovery.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Scientific Reports
·
2024
·Vol. 14
·期 1
·1-12
·
IF 3.8
Dong Chaoyang
To improve anti-icing traits of outdoor coatings, a synergy between photothermal and hydrophobic anti-icings was utilized to fabricate copolymer/Ti 3 C 2 T x MXene composite coatings with good transparency and adhesion. MXene contributes to photothermal trait from local surface plasmon resonance effect. Copolymer enables hydrophobicity from perfluoroalkyls-induced low surface energy and high surface roughness. An increase in MXene dose results in an increased surface roughness. With 140.0 ± 2.2° of water contact angle and 70% of light transmittance, the optimal film bears 2 wt% of MXene. High MXene dose results in large temperature-increase of film under sunlight. After 15 min of sunlight exposure, the temperature of optimal film surface in icing simulation increases from − 18 ℃ to 7.2 ℃. After 48 h of acid immersion, the temperature-increase of optimal film surface based on 300 s of sunlight irradiation reaches 28.7 ± 1.2 ℃. After 48 h of ultraviolet irradiation, the temperature-increase of optimal film surface is 30.7 ± 0.8 ℃. This surface has a water contact angle of 132.7 ± 1.1° after 48 h of acid immersion. This study gives impetus to a preparation of various composite coatings for outdoor anti-icing/deicing.
研究领域:
材料科学
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表面工程
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能源材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF PHYSICS D-APPLIED PHYSICS
·
2018
·Vol. 51
·期 35
·355301
·
IF 2.373
Tao Pang,Ronghua Jian,Jianping Xie,Wenhui Lu
The cubic phase KY3F10:15%Yb3+,1%Ho3+ up-converting nanocrystals are prepared by a simple hydrothermal method. Under 980 nm excitation, strong green and red emissions are produced at the same time. According to a set of steady state rate equations and the power dependence of up-conversion luminescence, it is confirmed that two-step energy transfer from Yb3+ to Ho3+dominates the population of green emission level, while the multi-phonon decay of 5S2/5F4 to 5F5 and promotion from 5I7 to 5F5 are responsible for the red emission. Long-term laser irradiation leads to significant thermal effects. Based on the ratiometric luminescence temperature sensing behavior, the light to heat conversion ability is evaluated. This multi-functional nanocrystal is potentially applicable as the nano-heater for photo-thermal therapy of tumors.
研究领域:
材料科学
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医学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2024
·
IF 11.2
Yunxiang Zhang,Yu Wang,Chenliang Zhou,Hazem Abdelsalam,Wei Chen,Li Huang,Zhichao Mu,Zhili Chen,Diab Khalafallah,Qinfang Zhang
High photogenerated carrier recombination rate and weak spectral response are the two main factors restricting photocatalytic activities of photocatalysts. In this work, a novel Ag/Bi 24 O 31 Cl 10 heterojunction has been developed by the in-situ photoreduction technique to address the preceding issues. Physicochemical properties of as-synthesized 0.7 wt% Ag/Bi 24 O 31 Cl 10 photocatalysts were investigated in detail. The Ag clusters can be seen as surface plasmon polaritons to light absorption capacity and photothermal effect, which was demonstrated via Raman and UV–Vis diffuse reflectance spectra (UV–Vis DRS). Density functional theory (DFT) calculations show that the additional unoccupied crystal orbital by the silver (Ag) will accelerate the charge separation where some of the excited electrons to the conduction band of Bi 24 O 31 Cl 1 0 will drift to these orbitals which in turn prevent charge recombination. Therefore, Ag metal cluster-decorated Bi 24 O 31 Cl 10 photocatalysts can be identified as electron trappers to boost the spatial separation of the photogenerated carrier, and finally, the CH 4 generation rate and the rhodamine b (RhB) degraded efficiency of Ag/Bi 24 O 31 Cl 10 photocatalysts are enhanced about 1.54 and 5.20 times, respectively. The Ag/Bi 24 O 31 Cl 10 composite photocatalyst retained high photocatalytic activities after four cycles indicating the stability and repeatability of the Ag/Bi 24 O 31 Cl 10 composite. This work aims to provide new insight into modifying ideal semiconductor materials for high photocatalytic activity.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2018
·Vol. 10
·期 5
·474
·
IF 2.935
Yuting Zou,Liang Fang,Tianqi Chen,Menglong Sun,Chunhua Lu,Zhongzi Xu
Two issues are required to be solved to bring intrinsically self-healing polymer coatings into real applications: remote activation and satisfied practical properties. Here, we used MXene, a newly reported two-dimensional material, to provide an epoxy coating with light-induced self-healing capabilities and we worked to enhance the properties of that coating. The self-healing coatings had a reversible crosslinking network based on the Diels-Alder reaction among maleimide groups from bis(4-maleimidopheny)methane and dangling furan groups in oligomers that were prepared through the condensation polymerization of diglycidylether of bisphenol A and furfurylamine. The results showed that the delaminated MXene flakes were small in size, around 900 nm, and dispersed well in self-healing coatings. The MXene flakes of only 2.80 wt % improved greatly the pencil hardness of the coating hardness from HB to 5H and the polarization resistance from 4.3 to 428.3 MΩ cm−2. The self-healing behavior, however, was retarded by MXene flakes. Leveling agent acted a key part here to facilitate the gap closure driven by reverse plasticity to compensate for the limitation of macromolecular mobility resulting from the MXene flakes. The self-healing of coatings was achieved in 30 s by thermal treatment at 150 °C. The efficient self-healing was also demonstrated based on the recovery of the anti-corrosion capability. MXene flakes also played an evident photothermal role in generating heat via irradiation of near-infrared light at 808 nm and focused sunlight. The healing can be quickly obtained in 10 s under irradiation of near-infrared light at 808 nm having a power density of 6.28 W cm−2or in 10 min under irradiation of focused sunlight having a power density of 4.0 W cm−2.Keywords:self-healing;epoxy coating;MXene;Diels-Alder reaction;photothermal effect
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
JOURNAL OF ALLOYS AND COMPOUNDS
·
2020
·
IF 4.65
Daoguang Bi,Yangyang Li,Yingbang Yao,Tao Tao,Bo Liang,Shengguo Lu
Flexible photothermal devices have been extensively explored in a wide range of fields in recent years. In this work, a flexible photothermal nanocomposite film based on Ti 2 O 3 -PVA has been demonstrated for converting sunlight into thermal energy. Ti 2 O 3 nanoparticles were surfaced-modified by four kinds of different surfactants (γ–aminopropyltriethoxy Silane , Hexadecyl Trimethyl Ammonium Bromide, Stearic Acid, Polysorbate-80), respectively, and then the nanocomposites were prepared by a simple solution casting method. The flexible composite shows strong sunlight absorption in a wide spectrum range (300 nm–2000 nm). Under illumination of 5 kW/m 2 simulated sunlight, the nanocomposite can be quickly heated up to 64.1 °C. The nanocomposite presented stable performances after tens of bending tests, indicating good flexibility. Our results show that the nanocomposite with Ti 2 O 3 nanoparticles modified with Stearic Acid exhibits the strongest light absorption capability and thus the best photothermal effect. This flexible composite material may have promising potentials in the applications of photothermal energy harvesting devices for wearable electronics, solar-driven steam generators, or seawater desalinators etc.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Minglu Tang,Yangtian Shi,Liang Lu,Jingqi Li,Zhaocong Zhang,Jiatong Ni,Wenxin Wang,Yanhua Zhang,Tiedong Sun,Zhiguang Wu
Nanozymes, which have enzymatic activity and physicochemical properties of nanomaterials, have attracted extensive attention in the field of tumor therapy. However, the low activity of nanozymes in the tumor microenvironment leads to limited therapeutic effects. Here, we report an MXene-integrated nanozyme that exhibits dual catalytic activities, exerting synergistic effects to enhance tumor therapy. The MXene-integrated nanozyme consists of CeO 2 nanozymes with dual enzyme-like activities (simulating catalase and peroxidase) loaded on MXene. In such a construct, the catalase- and peroxidase-like activity of CeO 2 nanozymes alleviates hypoxia and elevates oxidative stress in the tumor microenvironment, and the overexpressed glutathione (GSH) is consumed by the redox reaction of CeO 2 nanozymes. The CeO 2 nanozyme-loaded MXene could couple the photothermal effect and dual enzyme-like activities, resulting in enhanced tumor nanocatalytic therapy with a tumor growth inhibition (TGI) effect of 92%. Dual active nanozyme-loaded MXene is a promising material for the development of nanozyme catalytic therapy in the future.
研究领域:
生物医学工程
·
纳米医学
·
肿瘤学
✓ 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）