Hydrothermal synthesis of alpha- and beta-HgS nanostructures

Galain, Isabel; María, Pérez Barthaburu; Aguiar, I.; Fornaro, L.

doi:10.1016/j.jcrysgro.2016.08.066

Cited by 5 publications

(4 citation statements)

References 33 publications

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“…Previous attempts to create HgS nanoparticles within a specified size range below ca. 10 nm have involved complex and time‐consuming processes including chemical vapor deposition (CVD) or hydrothermal synthesis . The classic “Pharaoh's serpent” synthesis approach could yield large quantities of HgS nanoparticles decorating the porous C 3 N 4 matrix material.…”

Section: Resultsmentioning

confidence: 99%

“…10 nm have involved complex and time-consuming processes including chemical vapor deposition (CVD) or hydrothermal synthesis. [47][48][49] The classic "Pharaoh's serpent" synthesis approach could yield large quantities of HgS nanoparticles decorating the porous C 3 N 4 matrix material. The nanoscale dimensions of the HgS particles is likely to lead to a depression of the decomposition temperature, as is commonly found for nanomaterials, which is consistent with our TGA results.…”

Section: Articlementioning

confidence: 99%

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Pharaoh's Serpents: New Insights into a Classic Carbon Nitride Material

Miller

D'Aleo

Suter

et al. 2017

Zeitschrift anorg allge chemie

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Abstract. The combustion of mercury(II) thiocyanate to form "Pharaoh's serpents" is a spectacular reaction first described nearly two centuries ago. The large volume of distinctive yellow branches that grow from a tiny quantity of flaming reactants makes this an enchanting demonstration, often used to depict the magic of chemistry. In recent years several videos of this bizarre process have "gone viral" online. Formally, the reaction should yield a carbon nitride with the ideal formula C 3 N 4 along with HgS. However, since early characterization attempts there has been little further study of the materials pro-

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Section: Resultsmentioning

confidence: 99%

Section: Articlementioning

confidence: 99%

Pharaoh's Serpents: New Insights into a Classic Carbon Nitride Material

Miller

D'Aleo

Suter

et al. 2017

Zeitschrift anorg allge chemie

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“…58−60 The Hg atom over α-HgS and β-HgS surfaces exhibits double and triple coordinations, respectively. 61 According to the aforementioned coordination structure of HgS species, it can be concluded that α-HgS and β-HgS corresponded to double-and triple-coordinated HgS species.…”

Section: Raw Metal Sulfidesmentioning

confidence: 97%

“… According to the aforementioned discussions, three key points related to the HgS formation are summarized: (i) surface M sites can be involved in the HgS formation; (ii) multiple surface sites are demanded to immobilize Hg 0 ; and (iii) surface HgS species can be divided into two types, i.e., double- and triple-coordinated HgS species. The TPD experiment was generally used to determine the type of surface HgS species, which can be divided into α-HgS and β-HgS. − The Hg atom over α-HgS and β-HgS surfaces exhibits double and triple coordinations, respectively . According to the aforementioned coordination structure of HgS species, it can be concluded that α-HgS and β-HgS corresponded to double- and triple-coordinated HgS species.…”

Section: Raw Metal Sulfidesmentioning

confidence: 99%

Mechanisms of Gas-Phase Mercury Immobilized by Metal Sulfides from Combustion Flue Gas: A Mini Review

Deng

et al. 2022

Energy Fuels

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Atmospheric mercury (Hg) pollution has attracted global attention as a result of its great harm to the ecosystem. By virtue of abundant surface Hg-philic sulfur sites, metal sulfides have been regarded as a promising Hg adsorbent. The Hg adsorption performance of metal sulfides is mainly determined by the distribution of surface active sites; thus, it is crucial to understand the interactions between the Hg atom and different surface sites. In this review, the immobilization mechanism of the Hg atom over metal sulfides was systematically summarized. First, the roles of surface active sites, i.e., metal and sulfur sites, played in Hg 0 adsorption were systematically elaborated, to explain the excellent performance of metal sulfides. Second, the improvement on the Hg 0 adsorption ability of engineered metal sulfides was attributed to the reasonable regulation of surface unsaturation and the introduction of alien active sites. Eventually, the effects of flue gas components on mineral sulfides were illuminated from the perspective of the introduction/consumption of surface active sites. The objective of this review was to interpret the detailed Hg 0 immobilization mechanism and to provide guidance for developing metal-sulfide-based sorbents, and the future prospects and challenges related to the Hg 0 adsorption mechanism by metal sulfides were discussed.

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