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
Materials Research Express
·
2018
·Vol. 5
·期 10
·106203
·
IF 1.151
Tao Pang,Wenbo Peng
Upconversion luminescence of Yb3+/Er3+ and Yb3+/Tm3+ co-doped Y2(MoO4)3 phosphors under 980 nm excitation is investigated. It is demonstrated that Yb3+ co-doping causes a significant thermal effect. For Yb3+ and Er3+ co-doped case, the thermal effect, the long-distance energy migration and the energy transfer from Er3+ to Yb3+ are responsible for the abnormal luminescence quenching. In the case of Yb3+ and Tm3+ co-doped, the thermal effect improves the excited efficiency of Tm3+, and thus the luminescence of Tm3+ continues to strengthen at the Yb3+ concentration that causes Er3+ luminescence quenching. These results contribute to the design of the efficient upconversion materials.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Lujie Dong,Ping Zhang,Wei Hu,Xingyou Tian,Xian Zhang,Jian Zhang,Hui Zhang
Current solar energy conversion materials based on the photo-thermo-electric effect faced challenges such as intermittent energy conversion, as well as a certain waste of resources and equipment due to unable to work at night. In order to address these issues, we have developed a film for power generation based on the photothermal and thermoelectric effects. In the composite film, the superconducting carbon black connected Bi 2 Te 2.7 Se 0.3 established an effective conductive pathway in the polyimide (PI), resulting in a Seebeck coefficient (S) of −95 μVK −1 , and a thermoelectric figure of merit (ZT) of 0.18 × 10 −3 for the composite film. Based on the photothermal and thermoelectric effects, the voltage output of the composite film during the day can be simulated and regulated by adjusting the power parameters of the laser emitter and the position of the laser. The composite film generated an output voltage of 5 mV owing to the exceptional thermoelectric effect. At night, Peltier effect and Joule heating effect permitted the attainment of a maximum temperature of 93 °C and a maximum temperature differential of 10 °C when the load voltage was 2 V. A homemade four-legged thermoelectric system achieved an output voltage of 227 mV and an output power of 2.659 mW at a laser power of 1.5 W/cm 2 . Concurrently, the composite film exhibited optimal mechanical characteristics, and bending cycle stability. As a result, this study provided a novel idea for the multifunctional integration, which not only provided efficient output during the day but also temperature control at night.
研究领域:
材料科学
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能量转换
·
热电材料
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光热转换
·
柔性电子学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materiomics
·
2024
·
IF 8.4
Yingzhi Meng,Silin Tang,Zhaojie Wang,Xiang Niu,Hongfang Zhang,Dingyuan Wang,Yisong Bai,Biaolin Peng,Sheng-Guo Lu,Qingqing Ke,Laijun Liu
The electrocaloric effect (ECE) offers a pathway to environmentally sustainable and easily miniaturized refrigeration technology, positioning it as a front-runner for the next generation of solid-state cooling solutions. This research unveils a remarkable ECE in a finely tuned (Ba 0.86 Ca 0.14 ) 0.98 La 0.02 Ti 0.92 Sn 0.08 O 3 ceramic, exhibiting a temperature shift (Δ T ) of 1.6 K across more than 85% of the maximum Δ T (Δ T max ) and spanning an exceptionally wide operational range of 92 K. Our investigation on dielectric responses and ferroelectric polarization-electric field ( P–E ) loops suggests that the broad operational scope results from the fragmentation of extended ferroelectric domains into smaller domains and polar nano-regions (PNRs) supported by PFM analysis. Furthermore, the introduction of La enhances spontaneous polarization by significantly extending the maximum electric field that can be applied, facilitating high-performance ECE at ambient temperature. This study positions BaTiO 3 -based lead-free ceramic as a sustainable alternative for addressing the cooling demands of modern electronic components, marking a significant stride toward next-generation solid-state refrigeration.
研究领域:
材料科学
·
固态制冷技术
✓ 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
·
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
·
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
·
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
·
表面工程
·
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
·
医学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 20
·1-15
·
IF 2.8
Xie Zhuojia,Jiang Xinyu,Zhang Weijian,Zou Zhengguang
With the development of the current times, the demand for refrigeration is in every aspect. Nevertheless, the necessity for new refrigeration materials is immediate because of the greenhouse effect and the destruction of the atmosphere. Therefore, perovskite materials have been investigated. La 0.8− x Eu x Ca 0.1 Sr 0.1 MnO 3 (LECSMO) ( x = 0.05, 0.10, 0.15) powder samples were prepared using the sol–gel method (S–G). The structure, magnetocaloric effect, and magnetic of LECSMO have been explored. X-ray diffraction (XRD) indicates that all samples belong to the rhombohedral perovskite structure of the Pbnm space group. The magnetic research of LECSMO revealed that the samples doped with Eu 3+ exhibited a ferromagnetic (FM) to paramagnetic (PM) transition around the Curie temperature (Tc). As the amount of Eu 3+ doping is added, Tc decreased from 264 to 194 K. Normalization and Banerjee’s criterion confirmed the second-order phase transition of the LECSMO near Tc. The maximum magnetic entropy change ( \(-\varDelta {S}_{M}^{max}\) ) for LECSMO ( x = 0.05, 0.10, 0.15) is 5.39, 4.52, and 4.35 J/(kg·K) when the applied magnetic field (H) = 5 T, respectively. Further, the relative cooling power (RCP) of LECSMO is 282.20 J·kg − 1 , 305.20 J·kg − 1 , and 323.15 J·kg − 1 , respectively.
研究领域:
材料科学
·
物理学
✓ 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
危险品化学品经营许可证（带存储）