Carbonaceous nanoparticles in Zibo hot springs: Implications for the cycling of carbon and associated elements

Tan, Xuanping; Bo, Benyu; Zhang, Peng; Shao, Guifang; Li, Rui; Wang, Kun

doi:10.1007/s10311-021-01267-y

Cited by 5 publications

(2 citation statements)

References 43 publications

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“…Indeed, natural Fe-bearing nanoparticles have been discovered in the air, soil, icebergs, glaciers, and water in various environmental settings (Raiswell et al, 2008;Wu et al, 2016). Additionally, these natural nanoparticles typically have irregular shapes and complex elemental compositions, distinguishing them from engineered nanoparticles (Liu et al, 2020;Tan et al, 2021).…”

Section: Origin Of Fe-bearing Nanoparticles In Hot Springmentioning

confidence: 99%

Biomimetic Fe-bearing nanoparticles in hot spring: morphology, origin and potential bioavailable Fe

Chen,

Liu,

Wang

et al. 2024

Front. Earth Sci.

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Iron is a critical redox-active element in geothermal water, and the presence of nanoparticulate Fe is essential in comprehending the intricate cycling of iron and related elements within the natural geothermal ecosystems. In this study, we investigated the mineral properties of Fe-bearing nanoparticles in a hot spring located in Shanxi Province. High-resolution transmission electron microscopy (HRTEM) is utilized for the examination of the morphology, chemical composition, and crystalline structure of Fe-bearing nanoparticles. The findings show that Fe-bearing nanoparticles can exist as single particles measuring 50–200 nm in size, as well as aggregate to form nanoparticle aggregations. The morphology of Fe-bearing nanoparticles mainly includes triangle, axiolitic, and irregular shapes. The selected area electron diffraction patterns reveal the crystal form, amorphous form, and the transition from amorphous to crystalline forms of these nanoparticles. Energy-dispersive X-ray spectroscopy (EDS) analysis indicates that these nanoparticles primarily consist of O and Fe in composition, along with various trace elements including N, Al, Si, Ca, Zn, Cr, Ni, and Mo. These results reveal that goethite and hematite can occur in hot spring. Various in size and modality, tend to cluster into each other, and multiple crystalline states indicate that these iron-bearing nanoparticles are formed through natural processes. In addition, the iron-bearing nanoparticles with biomimetic morphologies (cell-like or microorganism-like shapes) may be produced through microbial activity. The biomimetic properties also imply that these nanoparticles may be readily available for biological processes. Significantly, our findings further validate that the shape of iron oxide nanoparticles can serve as an indicator of pH and temperature of the hot spring.

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Section: Origin Of Fe-bearing Nanoparticles In Hot Springmentioning

confidence: 99%

Biomimetic Fe-bearing nanoparticles in hot spring: morphology, origin and potential bioavailable Fe

Chen,

Liu,

Wang

et al. 2024

Front. Earth Sci.

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“…They have the ability to persist for extended periods and often transport elements [30]. Natural nanoparticles can convey valuable information about geological formations deep within the Earth [31]. As a result, characterizing nanoparticles is considered an indispensable tool for mineral exploration.…”

Section: Indication Of Deep Geological Bodies By Nanoparticles In Fluidsmentioning

confidence: 99%

Characteristics and Research Significance of Micro-Nanoparticles in Geothermal Fluids in the Central Area of Shandong Province

Zuo,

Zhang,

Wang

et al. 2023

Water

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The micro-nanoparticles found in geothermal fluids exhibit distinct characteristics that hold great potential for detecting deeply concealed geothermal resources. Utilizing a nanoparticle tracking analyzer (NTA), we conducted observations on karst geothermal fluids collected from the central region of Shandong Province, specifically Jinan and Zibo. Our investigation revealed the presence of a significant quantity of naturally occurring micro-nanoparticles within these geothermal fluids, with particle sizes typically falling in the range of 100 nm to 5 μm. To gain a comprehensive understanding of these micro-nanoparticles, we subjected them to a detailed analysis, encompassing their type, shape, crystal structure, and chemical composition. This in-depth examination was carried out using transmission electron microscopy (TEM). Our findings, supported by TEM images and energy dispersive spectroscopy, indicated that these micro-nanoparticles in the geothermal fluid samples predominantly exhibit amorphous characteristics and possess irregular or nearly spherical shapes, often accompanied by rough edges. Furthermore, it was evident that the composition of these micro-nanoparticles primarily consists of carbonates, sulfates, and chlorides, which contain elements such as Fe, Ca, and Na. The distinctive features of these micro-nanoparticles provide valuable insights into the properties of the high-temperature reservoirs and aquifers from which they originate. As a result, we firmly assert that natural micro-nanoparticles can significantly contribute to the detection and comprehensive study of concealed geothermal resources within the Earth. This novel approach offers a promising method for exploring and gaining a deeper understanding of these hidden geothermal resources.

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Characteristics and Research Significance of Micro-Nanoparticles in Geothermal Fluids in the Central Area of Shandong Province

Zuo,

Zhang,

Wang

et al. 2023

Preprint

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Micro-nanoparticles' characteristics in geothermal fluids can be applied to detect of deep hidden geothermal resources. Observations using a nanoparticle tracking analyzer (NTA) indicated that the karst geothermal water collected in the central area of Shandong Province (Jinan and Zibo) contains many natural micro-nanoparticles with sizes primarily ranging between 100 nm and 5 μm. The micro-nanoparticles’ type, shape, crystal form, and chemical composition in the samples were analyzed using transmission electron microscopy (TEM). TEM images and energy dispersive spectroscopy showed that the micro-nanoparticles in geothermal water samples were mostly amorphous, irregular, or nearly spherical, with rough edges. The micro-nanoparticles were mainly carbonates, sulfates, and chlorine-containing Fe, Ca, Na, and Mg. The characteristics of the particles can reveal the properties of the deep, hot reservoirs and aquifers from where they originate. Therefore, we believe that natural micro-nanoparticles can be essential to detecting and studying deep, hidden geothermal resources, which is a novel approach to exploring deep, hidden geothermal resources.

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Carbonaceous nanoparticles in Zibo hot springs: Implications for the cycling of carbon and associated elements

Cited by 5 publications

References 43 publications

Biomimetic Fe-bearing nanoparticles in hot spring: morphology, origin and potential bioavailable Fe

Biomimetic Fe-bearing nanoparticles in hot spring: morphology, origin and potential bioavailable Fe

Characteristics and Research Significance of Micro-Nanoparticles in Geothermal Fluids in the Central Area of Shandong Province

Characteristics and Research Significance of Micro-Nanoparticles in Geothermal Fluids in the Central Area of Shandong Province

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