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lead, etc ; cesium; density functional theory; fluorescence; heat; ligands; solvents; thiols; ultraviolet radiation; Show all 9 Subjects
Abstract:
... Cesium lead halide perovskite quantum dots (QDs) have attracted immense attention for luminescent materials due to their narrow emission bands and color-tunable emission. However, indispensable surface ligands originating from ligand-assisted synthesis strategies severely deteriorate the stability and luminescence properties of QDs since these ligands have a highly dynamic binding. Herein, we used ...
lead, etc ; adsorbents; adsorption; cadmium; clay; pH; quantitative analysis; soil; soil organic matter; spectroscopy; Show all 10 Subjects
Abstract:
... Cadmium (Cd) and lead (Pb) are two of the most common elements found in contaminated sites. The behavior of specific metals in the soil may be affected by other metals because of the competition for adsorption sites. In this study, adsorption experiments after chemical extraction, multi-surface models, and advanced spectroscopy technology were jointly used to explain the adsorption mechanism of Cd ...
lead, etc ; animal manures; antibiotic resistance; endophytes; environment; fertilizers; greenhouses; leaves; public health; risk; Show all 10 Subjects
Abstract:
... Livestock manure is often used as fertilizer in greenhouses, resulting in simultaneous enrichment of heavy metals and antibiotic resistance genes (ARGs) in soils. The soil-plant system is a non-negligible way to spread ARGs; however, the effects of lead (Pb) on the spread of ARGs and their driving factors in the greenhouse soil-plant system remain unclear. In this present study, the occurrence of ...
lead, etc ; anodes; chemical oxygen demand; electrochemistry; energy efficiency; environment; ozone; space and time; wastewater treatment; Show all 9 Subjects
Abstract:
... Lead dioxide (PbO₂) materials have been widely employed in various fields such as batteries, electrochemical engineering, and more recently environmental engineering as anode materials, due to their unique physicochemical properties. Key performances of PbO₂ electrodes, such as energy efficiency and space-time yield, are influenced by morphological as well as compositional factors. Micro-nano stru ...
lead, etc ; agricultural soils; carcinogenicity; food chain; food security; human health; pollutants; risk; soil pH; soil quality; wastes; wheat; Show all 12 Subjects
Abstract:
... Heavy metals (HMs) from smelters pose severe challenges to the environmental soil quality of surrounding farmlands, and threaten human health through the food chain. This study explored the environmental effects of smelting activities on farmland soil, and additionally assessed the enrichment, transfer and health risk of HMs in soil-wheat systems. Multiple characterization results were combined to ...
lead, etc ; antimony; arsenic; atmospheric deposition; cadmium; copper; mercury; nickel; raw materials; risk; runoff; soil pollution; spatial variation; thallium; topsoil; zinc; China; Show all 17 Subjects
Abstract:
... Metal smelting have brought severe metal(loid)s contamination to the soil. Spatial distribution and pollution source analysis for soil metal(loid)s in an abandoned lead/zinc smelter were studied. The results showed that soil was contaminated heavily with metal(loid)s. The mean of lead (Pb), arsenic (As), cadmium (Cd), mercury (Hg) and antimony (Sb) content in topsoil is 9.7, 8.2, 5.0, 2.3, and 1.2 ...
lead, etc ; cadmium; carbon; carbon electrodes; coordination polymers; detection limit; electrochemistry; food chemistry; food safety; heavy metals; juices; liver; nanogold; paper; portable equipment; tea; voltammetry; Show all 17 Subjects
Abstract:
... A portable device is conducive to the on-site detection of heavy metal ions at trace level in food and the prevention of related food safety issues. In this work, an electrochemical device stacked up with flat electrodes was developed for the detection of Pb²⁺ and Cd²⁺. The top layer of the device is a carbon paper as working electrode, which is modified with amino functionalized cobalt-based meta ...
lead, etc ; Monte Carlo method; body weight; cadmium; carcinogenicity; exposure assessment; food composition; health effects assessments; heavy metals; milk; milk consumption; milk production; raw milk; risk; spectroscopy; Iran; Show all 16 Subjects
Abstract:
... This study evaluated toxic metal concentration in raw milk and related potential health risks. 100 raw milk samples and 30 water samples consumed by cows were gathered from 10 dairy farms in Behbahan county, and Pb and Cd were analyzed by Inductively Coupled Plasma - Optical Emission Spectrometry (ICP-OES). In raw milk samples, mean Pb and Cd levels were 0.55 ± 0.09 and 0.0031 ± 0.0004 mg/l, respe ...
lead, etc ; X-ray absorption spectroscopy; X-ray diffraction; cement; chlorine; compression strength; energy; fly ash; magnesium; municipal solid waste; potassium phosphates; thermodynamics; toxicity; transmission electron microscopes; waste incineration; Show all 15 Subjects
Abstract:
... The high chlorine (Cl) and lead (Pb) content characteristics of municipal solid waste incineration fly ash (MSWIFA) pose environmental risks and hinder resource utilization. Herein, an MSWIFA-based magnesium potassium phosphate cement (MKPC) preparation strategy was developed, which allowed the MSWIFA recycling and the Pb-Cl synergistic immobilization without the washing pretreatment. The compress ...
lead; lead nitrate, etc ; cadmium; chemical speciation; fractionation; organic matter; remediation; Show all 7 Subjects
Abstract:
... Organic matter (OM) degradation from amendments used in the remediation of metal-contaminated soils leads to modifications in soil chemical properties immediately after addition, which can also affect the soil metal distribution. Therefore, the speciation and potential mobility of heavy metals e.g., lead (Pb) and cadmium (Cd) were evaluated in three soils amended with OM. Soils, both spiked (with ...
... Relaxor ferroelectric-based energy storage systems are promising candidates for advanced applications as a result of their fast speed and high energy storage density. In the research field of ferroelectrics and relaxor ferroelectrics, the concept of solid solution is widely adopted to modify the overall properties and acquire superior performance. However, the combination between antiferroelectric ...
... Lead (Pb) is one of the most toxic elements in existence and has been used by humans for thousands of years. With only a few exceptions, each widespread application of lead has been banned systematically due to dramatic environmental and health consequences. However, we are now at the dawn of the perovskite era, potentially requiring yet again the widespread application of lead. ...
... Lead halide perovskite nanocrystals and their heterostructures have achieved substantial advances in optoelectronics; however, their inherent material instability and lead toxicity have driven research on alternative material systems. Herein, solution-processable heterostructures composed of lead-free double perovskite Cs₂AgBiBr₆ nanocrystals and BiOCl nanosheets were prepared through a colloidal ...
lead; lead acetate, etc ; body weight; calcium; dose response; males; myocardium; myosin; phosphorylation; poisoning; rats; toxicology; Show all 12 Subjects
Abstract:
... A moderate degree of lead intoxication was observed in male rats after repeated intraperitoneal injections with two doses of lead acetate three times a week during 5 (12.5 mg of Pb per kg body mass) and 6 (6.01 mg of Pb per kg body mass) weeks. Using an in vitro motility assay, we investigated the impact of this intoxication on the characteristics of actin-myosin interaction and its regulation in ...
... Few studies exist addressing the effects of guide dog harnesses on dogs biomechanics. The aim of this study was to investigate how two different harness types affect ground reaction forces and stride length. Twelve certified guide dogs were tested under different conditions: walking with a collar and leash, walking with the harness used daily (Norwegian type with straight handle) and walking with ...
... Formamidinium lead triiodide (FAPbI₃) currently holds the record conversion efficiency in the single-junction perovskite solar cell. Iodine management is known to be essential to suppress defect-induced nonradiative losses in FAPbI₃ active layers. However, the origin of nonradiative losses and the underlying mechanism of suppressing such losses by iodine-concentration management remain unknown. He ...
... This study aims to determine the one-step synthesis of lead zirconate titanate (PbZr₍₁₋ₓ₎TiₓO₃; PZT) particles, using a solid-state reaction method. These particles were synthesized at x of 0.48, using a solid-state reaction (SSR) method at various operating temperatures of 700–1000 °C. Before the reaction in a muffle furnace, the precursor powder was shaker milled for 2 h. The structural analysis ...
lead; lead phosphates, etc ; Shewanella putrefaciens; aqueous solutions; graphene oxide; heavy metals; metabolism; pH; pollutants; polymers; China; Show all 11 Subjects
Abstract:
... In this study, Pb(II) was used as a target heavy metal pollutant, and the metabolism of Shewanella putrefaciens (S. putrefaciens) was applied to achieve reducing conditions to study the effect of microbial reduction on lead that was preadsorbed on graphene oxide (GO) surfaces. The results showed that GO was transformed to its reduced form (r-GO) by bacteria, and this process induced the release of ...
... Recently, rock-salt lead-free chalcogenide SnTe-based thermoelectric (TE) materials have been considered an alternative to PbTe because of the nontoxic properties of Sn as compared to Pb. However, high carrier concentration that originated from intrinsic Sn vacancies and relatively high thermal conductivity of pristine SnTe lead to poor TE efficiency, which makes room for improving its TE properti ...
lead, etc ; iodides; optical isomerism; photoluminescence; Show all 4 Subjects
Abstract:
... The introduction of chirality in layered hybrid perovskites breaks the symmetry of their inorganic sub-lattices. Consequently, they show intriguing linear and non-linear optical properties. Here we explore the effect of chirality on the excitonic photoluminescence of chiral (R- and S-α-MBA)₂PbI₄ (MBA: methylbenzylammonium) at cryogenic temperatures. The induced chirality splits the excitonic emiss ...