Journal of Water Process Engineering
·
2025
·
IF 6.7
Chen-Yan Hu,Li-Li Hu,Tian-Yang Zhang,Xin-Yu Yang,Hao Liu,Jia-Nan Chen,Ling-Mei Gao,Zheng-Yu Dong
Emerging contaminants (ECs) have received widespread attention. In this study, the Far-UVC (222 nm) combined with chlorine (UV 222 /chlorine) system is used to remove ECs from water. The results reveal that carbamazepine (CBZ) was effectively degraded by the UV 222 /chlorine system, with a degradation efficiency of 92.5 % within 45 min at a UV fluence of 666 mJ cm −2 and a chlorine concentration of 200 μM. Quenching experiments indicate that HO• and Cl• play a major role in the UV 222 /chlorine system. The steady-state concentrations of HO• (3.85 × 10 −14 M), Cl• (8.55 × 10 −14 M), and ClO• (9.13 × 10 −12 M) in the UV 222 /chlorine system is determined by using probe method. The degradation of CBZ by UV 222 /chlorine system (92.5 %) is significantly better than that of UV 222 alone (32.3 %) and the UV 254 /chlorine system (78.3 %) at the same UV dose. In addition, the UV 222 /chlorine system exhibits excellent EE/O performance of 0.53 KWh/L, effectively reducing resource consumption. Compared with the UV 222 /peracetic acid (PAA) system, the UV 222 /chlorine system shows higher degradation efficiency for CBZ in a wide pH range of 4 to 9. In addition, the presence of Cl − and HCO 3 − shows no significant impact on both the UV 222 /chlorine and UV 222 /PAA systems. The UV 222 /chlorine system is expected to become a promising alternative to traditional UV and chlorine disinfection techniques in water treatment . This study provides technical support for promoting the practical application of the UV 222 /chlorine system.
研究领域:
环境科学
·
水处理技术
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Xingying Zhang,Yangyang Xu,Kongjie Gu,Shenjie Han,Junjie Cen,Youming Yu,Junfeng Hou
Recently, wood-based phase change materials have broad research prospects in energy management materials, but their complex preparation process, low thermal conversion efficiency, and poor heat storage capacity still limit their application. This study successfully prepared magnetic wood-based phase change materials (MWPCM) composed of delignified wood (DW), magnetic ferrosoferric oxide (Fe 3 O 4 ) nanoparticles, and polyethylene glycol (PEG) through a two-step method. The incorporation of PEG significantly improved the thermal energy storage capabilities while mitigating the heat loss during the conversion process of the MWPCM. Consequently, the MWPCM could maintain about 90 °C after being exposed to sunlight for 10 min at a light intensity of 1 sun, and it could sustain a stable temperature of about 50 °C for approximately 500 s following the shutoff of the xenon lamp, indicating remarkable thermal storage efficiency. Moreover, the MWPCM demonstrated rapid heating capabilities when subjected to alternating magnetic fields. Additionally, the MWPCM maintained stability even at temperatures below 220 °C, exhibiting superior thermal stability. The MWPCM demonstrated outstanding magnetic properties, photothermal conversion, and magnetothermal conversion performance, rendering it an invaluable type of inductive heating and thermal energy storage material with substantial practical applications.
研究领域:
材料科学
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能源工程
·
物理学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2014
·Vol. 131
·期 13
·
IF 1.64
Lina Zhou,Xichang Bao,Qian Liu,Jieliang Yu,Yanhua Chen,Renqiang Yang,Mingliang Sun
Poly{[2,7-(9,9-bis-(1-(2-(2-methoxyethoxy)ethoxy)ethyl)-fluorene)]-alt-[5,5-(4,7-di-2′-thienyl-2,1,3-benzothiadiazole)]} (EO-PF-DTBT) was synthesized by Suzuki coupling reaction. The polymer is soluble in common organic solvent, such as toluene, THF, and chloroform, and it also shows solubility in polar solvent, such as cyclopentanone. Solar cells based on EO-PF-DTBT and PC 61 BM show maximum power conversion efficiency of 2.65% with an open circuit voltage ( V OC ) of 0.86 V, a short circuit current density ( J SC ) of 6.10 mA/cm 2 , and a fill factor of 51% under AM 1.5G illumination at 100 mW/cm 2 , which is the best results for fluorene and 4,7-di-2-thienyl-2,1,3-benzothiadiazole copolymers and PC 61 BM blend. The 1,8-diiodooctane can work well to reduce the over-aggregated phase structure in polymer solar cells. Our results suggest that the introducing high hydrophilic side chain into conjugated polymer donor materials can tune the aggregation structure and improve the solar cells performances. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131 , 40478.
研究领域:
材料科学
·
能源科学
·
有机化学
✓ 已验证
DOI
高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2021
·
IF 6.158
Lizhe Ma,Zhou Yang,Bang Ji,Yunfeng Liu,Yinlong Jiang,Jieli Duan,Wenfeng Zhao
In this study, the LED array system (UV and visible light) was established, and the theoretical light distribution of the reactor was simulated in MATLAB. The light field of the conventional light source is more uniform than that of the LED array, and the light field uniformity of the LED array can optimize by increasing the number of LED. Various combinations of light sources and catalysts were subjected to batch experiments in laboratory-scale reactors. All experiments are consistent with the Langmuir-Hinshelwood model, where k UV-LEDs array [P25-Sulfamethazine] =0.0018 min −1 and k Blue-LEDs array [Ag3PO4-Tetracycline] =0.0077 min −1 . In comparison experiments, conventional light sources exhibited faster dynamics compared to LED array light sources, where k Mercury lamp [P25- Sulfamethazine] =0.0209 min −1 and k Xenon lamp [Ag3PO4- Tetracycline] =0.0221 min −1 . Besides, all experiments are analyzed for electric energy per order ( E EO ). Specifically, the E EO value of the xenon lamp is 121 times that of the blue- LEDs array when the tetracycline concentration is 50 mg/L. The UV–vis of the catalyst is also coupled with the emission spectrum of the light source to evaluate the figures-of-merit of the system. The figures-of-merit ratio of the mercury lamp to the UV-LEDs array is 58.4, and the figures-of-merit ratio of the xenon lamp to the blue-LEDs array is 69.8. The obtained model can be applied to different reactors. This work demonstrates that the photocatalytic system driven by the LED array is superior to the conventional light source system regarding photon utilization rate and sustainability.
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2021
·Vol. 32
·期 16
·21164-21177
·
IF 2.478
Liu Jikang,Ding Yuqing,Li Chongyang,Bai Wangfeng,Zheng Peng,Zhang Jingji,Zhai Jiwei
Although high-applied electric field can usually generate high energy storage performance (ESP) for most dielectric materials, the presence of high risk at high electric field and large cost of insulation technology are the main obstacles that critically restrict the actual applications of dielectric ceramics in the energy storage area. Herein, simultaneously realizing high energy storage density ( W rec )/efficiency ( η ) and charge–discharge performance under low working electric fields is proposed in relaxor ferroelectrics via combining the non-ergodic and ergodic relaxor state (NR-ER) and dominated ER features. Based on this idea, a high W rec (2.03 J/cm 3 ) and favorable η (72%), together with excellent frequency dependence (0.5–100 Hz), moderate temperature stability (20–140 °C, and satisfactory fatigue endurance (10 0 –10 5 cycles), can be simultaneously achieved in 0.3[0.955(Bi 0.5 Na 0.5 )TiO 3 –0.045Ba(Al 0.5 Ta 0.5 )O 3 ]–0.7Sr 0.3 (Bi 0.7 Na 0.67 Li 0.03 ) 0.5 TiO 3 (BNT–BAT–0.7SBNLT) ceramic at a low electric field of 200 kV/cm. Moreover, the indicated ceramics also possess great charge–discharge performance at 140 kV/cm, featured by a large power density P D of 46.2 MW/cm 3 , discharge energy density W d of 0.62 J/cm 3 , fast charge-discharge rate t 0.9 of 210 ns, and excellent cycling reliability. Thus, the designed BNT–BAT–0.7SBNLT ceramic possesses superior comprehensive ESP under low electric field, which has broad prospects in practical high-power ceramic capacitors applications.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
iScience
·
2024
·
IF 4.6
Sijie Pian,Zhuning Wang,Chengtao Lu,Peixuan Wu,Qikai Chen,Xu Liu,Yaoguang Ma
The art of passive thermal management lies in effectively mitigating heat stress by manipulating the optical spectra of target objects. However, a significant obstacle remains in finding a structure that can seamlessly adapt to diverse thermal environments. In response to this challenge, we posit that Janus fabrics have unique advantages for multi-scene applications when carefully engineered. A Janus fabric with an upper side exhibiting a 92% solar reflectivity and a 94% emissivity, along with a lower side possessing an infrared emissivity below 30% could enable energy savings at a large scale. It outperforms commercial products in terms of energy-saving efficiency under different climate conditions. Furthermore, the scalable manufacturing compatibility and outstanding performance make the Janus structure a promising avenue for diverse passive thermal management scenarios.
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Mingtai Hou,Hao Zheng,Chuanhui Wang,Xinru Zhang,Zeyi Jiang,Nien-Chu Lai
Considering the predicament of low solar absorption and heat storage efficiency of conventional microencapsulated phase change materials (MPCMs), we have developed a new-type photothermal MPCM. The acquired MPCM possesses a uniform spherical shape and a core-shell structure, with highly defective molybdenum oxide covering the surface as a full-spectrum light absorber. The composite MPCMs exhibit effective thermal regulation performance, featuring an enthalpy exceeding 130 J/g, a maximum energy storage efficiency of 99.3%, and a photothermal conversion efficiency of 84.8%. After 200 heating and cooling cycles as well as 30 photothermal cycles, the MPCM demonstrated excellent phase change reversibility and thermal stability. Notably, the composite MPCM displayed remarkable stability in terms of thermal energy storage, photothermal conversion, and cycling performance, thereby substantiating its tremendous potential in solar thermal utilization.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Kai Lv,Yong Zhu,Lei Wang,Zhang Chen,Zongtao Zhang,Yanfeng Gao
To reduce carcinogenic cobalt content in pigments, a series of near-infrared reflective pigments based on CaAl 12-x-y Co x Ti y O 19 (x = 0–0.5 and y = 0-(x+0.3)) were prepared via solid state reactions. Although the cobalt content in the pigment CaAl 11.7 Co 0.1 Ti 0.2 O 19 is only 0.87% by mass, the resulting pigment still has excellent color properties (64.89, 3.88, −40.30) and near-infrared reflectance (∼70%). The structural information of the obtained pigments were analyzed by XRD refinement, and the results revealed that the doping concentration of titanium relative to cobalt significantly affected the coordination structure of cobalt in hibonite, which in turn apparently influenced the optical properties of the obtained samples. The actual cooling effect of the CaAl 11.7 Co 0.1 Ti 0.2 O 19 coating was tested using a model house and the annual energy consumption was simulated by using EnergyPlus software. For a warm city (Haikou), using this CaAl 11.7 Co 0.1 Ti 0.2 O 19 coating can reduce energy consumption for cooling by 24.75%.
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
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Jiachen Qian,Bin Li,Shouqin Tian,Baoshun Liu,Xiujian Zhao
VO 2 -based thermochromic smart windows have attracted much attention due to their promising energy-saving effects. However, the high phase transition temperature ( T c , 68 °C), low luminous transmittance ( T lum , <40%) and solar energy modulation efficiency (Δ T sol , <10%) hindered their practical application. In order to improve these deficiencies simultaneously, the photothermal W 18 O 49 nanorods were introduced into VO 2 based nanothermochromic films in this work. The obtained film exhibited enhanced thermochromic performance ( T lum = 82.5%, Δ T sol = 10%) due to the incorporation of W 18 O 49 nanorods. And T lum of 63.3% and Δ T sol of 18.6% were presented for the bilayer film, which is one of the best reported performances for VO 2 films to date. In particular, the bilayer film exhibited an obvious energy saving effect with a reduction of 21.1 °C in indoor temperature compared with normal glass due to its excellent thermochromic properties. In addition, the thermochromic characteristics of VO 2 -W 18 O 49 -polyvinylpyrrolidone (PVP) composite films could be trigged at lower temperature than that of VO 2 film due to the additional thermal energy generated by the absorption of near-infrared light by W 18 O 49 nanorods. Therefore, the outstanding performance and the easily scaled solution-based synthesis route would facilitate the practical application of VO 2 -based smart windows.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
APPLIED ENERGY
·
2023
·
IF 11.2
Yunhong Zhou,Jiwei Zeng,Yiyou Guo,Haobin Chen,Tiantian Bi,Qilang Lin
To simultaneously improve the photothermal conversion and encapsulation capacity of phase change material (PCM), a three-dimensional hierarchical porous carbon surface-decorated graphitic carbon foam (SGF) was developed. Employing this SGF as an encapsulated skeleton for stearic acid (SA), a unique shape-stabilized SA/SGF composite PCM was successfully prepared after vacuum impregnation. The porous carbon surface exhibits a uniform and fluffy three-dimensional continuous network structure well adhered onto the pore walls of the SGF; it can act as a desirable interfacial layer between SA and the SGF, which gives the composite effective encapsulation performance and good interfacial compatibility. The as-prepared composite has a loading capacity of 78.16% for melted SA without any leakage, and possesses a thermal conductivity of 3.25 W/mK with 1377% higher than that of SA and a compressive strength of 4.41 MPa (increasing 283.5% than the SGF). Further, the melting and crystallization enthalpy of the composite reaches 167.6 J/g and 167.5 J/g, respectively, with a thermal storage efficiency of up to 95.13%; meanwhile, it displays excellent thermal cycle stability revealed by keeping an enthalpy of 92.80% after 200 thermal cycles. More importantly, it presents a high photothermal conversion of 90.14% at 200 mW/cm 2 with the ability to serve as a stable heat source during solar-thermal-electric conversion. Consequently, the composite has great potential in solar storage and waste heat recycle.
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Yang Zhou,Yiqi He,Simeng Qi,Sisi Zhao,Lulu Wang,Quan Xu
Thermal responsive hydrogel smart windows have attracted wide attention due to their design flexibility and excellent thermal responsive optical properties. Only relying on temperature control, sometimes the phase transition speed is not fast to meet the needs of rapid thermal response rate in practical applications. Here, a hydrogel with excellent photothermal response characteristics was prepared through combining the photothermal conversion efficiency of graphene nanoparticles and the thermal response effect of hydroxypropyl cellulose. The photothermal cooperative hydrogel (PCH) smart window has integrated high solar modulation ability (ΔT sol = 61.2 %), excellent infrared isolation ability (ΔT IR = 48.6 %) and fast response speed (within 2 min) successfully. In outdoor demonstrations, the PCH window can reduce 13.1 °C compared to the ordinary window, showing promising energy-saving performance in summer daytime. Simulations suggested that PCH window can cut off 13.1 % heating, ventilation, and air-conditioning (HVAC) energy consumption compared with the Low-E window in Singapore. The PCH window can dynamically adjust solar radiation through light and heat, which provides a new strategy for intelligently reducing the energy consumption of buildings.
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
APPLIED ENERGY
·
2020
·
IF 8.848
Lei Shi,Yanwei Hu,Yijie Bai,Yurong He
Photo-thermal conversion and energy storage using phase change materials are now being applied in industrial processes and technologies, particularly for electronics and thermal systems. This method relies on adding high thermal conductivity fillers, such as nanoparticles, to enhance the phase change process. In the long term, dynamic tuning heat transfer provides a superior means of tuning control the heat transfer efficiency and speed. In this study, a nanofluid phase change material was prepared by adding magnetic nanoparticles, effectively combining the properties of high thermal conductivity and magnetism, in an attempt to develop a magnetically enhanced approach for dynamic tuning of photo-thermal conversion charging. Our results showed that the phase change efficiency of magnetic phase change material can be improved by magnetic field application. With the increasing magnetic strength, the photo-thermal storage efficiency was enhanced, and storage capacity was improved by more than 48%. Meanwhile the steady temperature of the magnetic phase change material increased, enhancing the open-circuit voltage in photo-thermoelectricity experiments. Thus, the proposed method demonstrated in this study achieved superior phase change heat transfer characteristics within a photo-thermal conversion process by dynamically controlling the magnetic field distribution, which should be especially useful for direct solar energy utilisation.
研究领域:
材料科学
·
能源技术
·
太阳能利用
✓ 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）