Nanoporous Mg-doped SiO2 nanoparticles with tunable infrared emissivity toward effective radiative cooling coatings

Zhang, Xingxing; Gao, Xiangdong; Dong, Yubing; Wu, Yusong; Duan, Deng; Zhao, Xiangyong; Li, Xiaomin

doi:10.1016/j.jallcom.2023.168905

Cited by 6 publications

(2 citation statements)

References 62 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For FeCoMg@SHS and FeCoMgMn@SHS, an additional peak at 529.9 eV can be identified. It might imply the partial substitution of Si by Mg 2+ in the M-O-Si lattices [ 23 ]. The Mg 1s spectra of FeCoMg@SHS and FeCoMgMn@SHS also supported above suggestion.…”

Section: Resultsmentioning

confidence: 99%

Framework confinement of multi-metals within silica hollow spheres by one-pot synthesis process

Zhao,

Liu,

et al. 2024

Science and Technology of Advanced Materials

View full text Add to dashboard Cite

The control incorporation of metals in silica hollow spheres (SHSs) may bring new functions to silica mesoporous structures for applications including catalysis, sensing, molecular delivery, adsorption filtration, and storage. However, the strategies for incorporating metals, whether through pre-loading in the hollow interior or post-encapsulation in the mesoporous shell, still face challenges in achieving quantitative doping of various metals and preventing metal aggregation or channel blockage during usage. In this study, we explored the doping of different metals into silica hollow spheres based on the dissolution-regrowth process of silica. The process may promote the formation of more structural defects and functional silanol groups, which could facilitate the fixation of metals in the silica networks. With this simple and efficient approach, we successfully achieved the integration of ten diverse metal species into silica hollow sphere (SHS). Various single-metal, dual-metal, triple-metal, and quadruple-metal doped SHSs have been prepared, with the doped metals being stable and homogeneously dispersed in the structure. Based on the structural characterizations, we analyzed the influence of metal types on the morphology features of SHSs. The synergistic effects of multi-metals on the catalysis applications were also studied and compared.

show abstract

Section: Resultsmentioning

confidence: 99%

Framework confinement of multi-metals within silica hollow spheres by one-pot synthesis process

Zhao,

Liu,

et al. 2024

Science and Technology of Advanced Materials

View full text Add to dashboard Cite

show abstract

“…The fabric exhibits high solar reflectivity (0.94) and suitable atmospheric window emissivity (0.79), achieving temperature reductions of up to 7.8 • C under direct sunlight [54]. Magnesium-doped SiO 2 coatings demonstrated high solar reflectance of up to 86% and superior radiative cooling properties compared to pure SiO 2 coatings, achieving a maximum temperature reduction of 17.8 • C compared to empty space and 4.5 • C compared to commercial SiO 2 coatings [55].…”

Section: Cool Building Envelope Materialsmentioning

confidence: 99%

Increasing Solar Reflectivity of Building Envelope Materials to Mitigate Urban Heat Islands: State-of-the-Art Review

Ziaeemehr,

Jandaghian,

et al. 2023

Buildings

View full text Add to dashboard Cite

The Urban Heat Island (UHI), a consequence of urban development, leads to elevated temperatures within cities compared to their rural counterparts. This phenomenon results from factors such as urban designs, anthropogenic heat emissions, and materials that absorb and retain solar radiation in the built environment. Materials commonly used in cities, like concrete, asphalt, and stone, capture solar energy and subsequently emit it as heat into the surroundings. Consequently, this phenomenon amplifies summertime cooling energy demands in buildings. To mitigate the UHI impacts, various mitigation strategies have emerged that include but are not limited to using higher solar reflectivity materials, known as “cool materials”, and increasing vegetation and greenery in urban areas. Cool materials have high reflectivity and emissivity, effectively reflecting solar radiation while emitting absorbed heat through radiative cooling. Increasing the solar reflectivity of building envelope materials is a promising sustainable solution to lessen the UHI effects. This state-of-the-art review summarizes the UHI causes and effects, states the mitigation strategies, describes the cool building envelope materials, explains the solar reflectivity index measurements, indicates the building and micro-climate simulations, highlights the performance evaluation of using cool building envelope materials, points out the research gaps, and proposes future research opportunities.

show abstract

Honeycomb porous regenerated cellulose aerogel films with enhanced thermal dissipation for agricultural mulch application

Chen,

Dai

et al. 2024

Food and Bioproducts Processing

View full text Add to dashboard Cite

Nanoporous Mg-doped SiO2 nanoparticles with tunable infrared emissivity toward effective radiative cooling coatings

Cited by 6 publications

References 62 publications

Framework confinement of multi-metals within silica hollow spheres by one-pot synthesis process

Framework confinement of multi-metals within silica hollow spheres by one-pot synthesis process

Increasing Solar Reflectivity of Building Envelope Materials to Mitigate Urban Heat Islands: State-of-the-Art Review

Honeycomb porous regenerated cellulose aerogel films with enhanced thermal dissipation for agricultural mulch application

Contact Info

Product

Resources

About