Science topic

Adsorption - Science topic

The condensation of gases, liquids, or dissolved substances on the surfaces of solids. It includes adsorptive phenomena of bacteria and viruses as well as of tissues treated with exogenous drugs and chemicals.
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Publications related to Adsorption (10,000)
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Article
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Direct air capture (DAC) of carbon dioxide is a promising method for mitigating climate change. Solid sorbents, such as metal–organic frameworks, are currently being tested for DAC application. However, their potential for deployment at scale has not been fully realized. The computational discovery of solid sorbents is challenging, given the vast c...
Article
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Anode material is a crucial component of Li-ion battery influencing electrochemical performance and overall efficiency of energy storage and conversion systems. In particular, its surface properties are of decisive importance. In this work, using density functional theory in conjunction with machine-learning interatomic potentials, we calculated di...
Article
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Efficient synthesis of CnH2n+1OH (n=1, 2) via photochemical CO2 reduction holds promise for achieving carbon neutrality but remains challenging. Here, we present rare earth dual single atoms (SAs) catalysts containing ErN6 and NdN6 moieties, fabricated via an atom‐confinement and coordination method. The dual Er−Nd SAs catalysts exhibit unprecedent...
Article
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Electrochemical carbon dioxide reduction (ECO2RR) shows great potential to create high‐value carbon‐based chemicals, while designing advanced catalysts at the atomic level remains challenging. The ECO2RR performance is largely dependent on the catalyst microelectronic structure that can be effectively modulated through surface defect engineering. H...
Article
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Background: Pro- and anti-inflammatory cytokines help regulate the inflammatory response. A cytokine storm is a dysregulated cytokine response associated with sepsis and other conditions that result in a hyper-inflammatory state. Extracorporeal cytokine adsorption has the potential to restore a balanced inflammatory response. Hemoperfusion with Cyt...
Article
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Anode‐free lithium (Li) metal batteries (AFLBs) featured high energy density are viewed as the viable future energy storage technology. However, the irregular Li deposition and unstable solid electrolyte interphase (SEI) on anode current collectors reduce their cycling performance. Here, we propose a concept of anion‐recognition electrodes enabled...
Conference Paper
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The potential use of commercial activated carbon for the removal of water-based phthalocyanine printing dye (Cyan) form aqueous solution was investigated. Screening and optimization of four variables (initial dye concentrations, adsorbent mass, pH of the aqueous solution and reaction time) influencing the adsorption process are performed using a ne...
Article
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The study conducts the adsorption kinetic analysis of biosolid-derived biochar produced from pyrolysis and oxidative pyrolysis. The adsorption kinetic analysis is performed at three different temperatures. The characteristics of the adsorption and diffusion mechanisms are evaluated by applying adsorption kinetic models and diffusion mechanism model...
Article
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The tripartite combination of a high density and stability of surface reaction sites, complemented by the longevity and efficient transfer of interface carriers, along with the effective adsorption and activation of target gas molecules, jointly determines the efficiency of chemiresistors. In this work, the strong metal–support interaction (SMSI) o...
Article
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Developing low-cost catalysts for highly efficient nitrogen reduction reaction (NRR) in industrial applications is a great challenge. Dual-atom catalysts (DACs) have also aroused scientific interest as potential NRR catalysts due to their possible higher activity and atom utilization than single atom catalysts. Using density functional theory, we h...
Article
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The prerequisite for electrocatalytic hydrogenation reactions (EHRs) is H2O splitting to form surface hydrogen species (*H), which occupy catalytic sites and lead to mismatched coverage of *H and reactants, resulting in unsatisfactory activity and selectivity. Thus, modulating the splitting pathway of H2O is significant for optimizing the EHR proce...
Article
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This study developed mycelial biochar composites, BQH-AN and BQH-MV, with stable physicochemical properties and significantly improved adsorption capabilities through microbial modification. The results showed that the specific surface area and porosity of BQH-AN (3547.47 m2 g−1 and 2.37 cm3 g−1) and BQH-MV (3205.59 m2 g−1 and 2.46 cm3 g−1) were si...
Article
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Tin‐based materials have been designed as potential catalysts for the electrochemical conversion of CO2 into a single product. However, such tin‐based materials still face the challenges of unsatisfactory selectivity, because the rate‐determining step is situated within the slow desorption step. In this work, a variety of tin‐based materials are sy...
Article
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The efficient capture of low‐pressure CO2 remains a significant challenge due to the lack of established multi‐complexation of CO2 to active sites in microporous materials. In this study, we introduce a novel concept of reversible multi‐complexation of CO2 to alkaline earth metal (AEM) ion pairs, utilizing a host site in ferrierite‐type zeolite (FE...
Article
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The formation of polymeric self-organizing organosilicon surface nanolayers on copper occuring as a result of modification of the metal surface with organosilane-based formulations has been studied. The anticorrosive effect of such surface layers in corrosive chloride-containing electrolytes as well as in artificial and natural atmospheres has been...
Article
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Axial coordination engineering has emerged as an effective strategy to regulate the catalytic performance of metal−N−C materials for oxygen reduction reaction (ORR). However, the ORR mechanism and activity changes of their active centers modified by axial ligands are still unclear. Here, a comprehensive investigation of the ORR on a series of FeN4−...
Article
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Accurately determining the pore structure and heterogeneity characteristics of marine-continental transitional shale in the Taiyuan Formation is crucial for evaluating the shale gas resources in the northern Ordos Basin. However, the studies on pore characteristics and heterogeneity of marine-continental transitional shales and isolated kerogen are...
Article
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Lithium–sulfur batteries (Li-S batteries) have attracted wide attention due to their high theoretical energy density and the low cost of sulfur cathode material. However, the poor conductivity of the sulfur cathode, the polysulfide shuttle effect, and the slow redox kinetics severely affect their cycling performance and Coulombic efficiencies, espe...
Article
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The surface wetting or coating of materials by polymers is crucial for designing functional interfaces and various industrial applications. However, the underlying mechanisms remain elusive. In this study, the wetting behavior of hydroxyl-terminated polybutadiene (HTPB) on a quartz surface was systematically investigated using computer simulation m...
Article
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The electrochemical CO2 reduction reaction (ECR) is a promising pathway to producing valuable chemicals and fuels. Despite extensive studies reported, improving CO2 adsorption for local CO2 enrichment or water dissociation to generate sufficient H* is still not enough to achieve industrial‐relevant current densities. Herein, we report a “two‐in‐one...
Preprint
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This article successfully synthesized a polymer adsorbent TOC containing S functional groups through thiophene and ethanedioyl chloride. The TOC was characterized by IR, molecular weight determination, EDS, SEM, and TG. For Pb(II), the maximum adsorption capacity of TOC can reach 122.7 mg/g (0.593 mmol/g) at pH=4, 250 minutes. After adsorption, it...
Article
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Consider the following simple parking process on \(\Lambda _n:= \{-n, \ldots , n\}^d,d\ge 1\): at each step, a site i is chosen at random in \(\Lambda _n\) and if i and all its nearest neighbor sites are empty, i is occupied. Once occupied, a site remains so forever. The process continues until all sites in \(\Lambda _n\) are either occupied or hav...
Article
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Technological progress has led to increased use of metals and alloys such as aluminum, brass, bronze and mild steel. While mild steel is favoured for its availability, low cost and excellent mechanical properties, it is prone to corrosion. This study aims to reduce the corrosion of mild steel in sulfuric acid using N-methyl formanilide (NMF) as an...
Article
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Carbon materials are the promising cathode material for sodium‐ion capacitors (SICs) with high energy/power density, however, clarifying the evolution processes of functional groups in carbon materials and revealing their energy storage mechanisms are full of challenges. Inspired by the ancient practice of alchemy, which sought to purify Dan medici...
Article
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Vacancy‐ordered perovskites and derivatives represent an important subclass of hybrid metal halides with promise in applications including light emitting devices and photovoltaics. Understanding the vacancy‐property relationship is crucial for designing related task‐specific materials, yet research in this field remains sporadic. For the first time...
Article
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The practical application of aqueous zinc ion batteries is still hampered by the side reactions and dendrite growth on Zn anode. Herein, the phase engineering of ZnSe coating layer by incorporating small molecules is developed to enhance the performance of Zn anode. The unique electronic structure of ZnSe⋅0.5N2H4 promises strong adsorption for Zn a...
Article
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Metal–organic frameworks (MOFs) have recently received a lot of interest for their use in adsorbing and eliminating hexavalent chromium from water. Obtaining low-cost, biocompatible, and environmentally friendly MOFs for research in this field is vital. One very stable three-dimensional UiO-66-Ce(IV) MOF, Ce-asp, was synthesized with a high yield u...
Article
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Lithium‐sulfur batteries (LSBs) are considered one of the most promising next‐generation energy storage devices due to their significant theoretical energy density and high specific capacity of sulfur cathode. However, several critical challenges still must be addressed for practical application. The shuttle effect and sluggish redox kinetics sever...
Article
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This work focuses on the application potential of novel MXene materials in the field of uranium-containing wastewater adsorption, particularly addressing gaps in existing research. Ultra-thin layered TiVCTx was selected as the core adsorbent to thoroughly investigate its adsorption performance of uranium(U(vi))-containing wastewater. By compounding...
Chapter
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In this chapter, the metal-organic framework (MOF) was employed to investigate the adsorption mechanism of different water pollutants such as dyes (Direct Blue 1: D1 and Direct Yellow-4: D2) and pharmaceuticals (amoxicillin: PHM1 and doripenem: PHM2) via physical approach in single and binary systems (SS and BS). Based on an experimental assessment...
Article
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In this study, an iron-coated montmorillonite composite (FMC) was prepared, and the adsorption and immobilization of cadmium (Cd) was investigated. The composite was coated with spherical amorphous iron (Fe), which can promote the adsorption of Cd. At the fifth minute of adsorption, the rate of Cd adsorption by the FMC reached 97.8%. With temperatu...
Article
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Drug substances in water bodies and groundwater have become a significant threat to the surrounding environment. This study focuses on the ability of the nanoporous carbon materials to remove ciprofloxacin from aqueous solutions under specific experimental conditions and on the development of the mathematical model that would allow describing the m...
Article
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Differential capacitance measurements are known to provide vital information regarding electrical double layer charging as well as interfacial structuring of ionic liquids and ionic liquid-based electrolytes. Several hurdles have prevented these types of measurements from becoming widely used, including the fact that there exists no real consensus...
Preprint
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Technologies for treating and removing the radioactive element cobalt, released during nuclear decommissioning, are necessary to address the health risks it poses to humans. A pelletized activated carbon material is considered the best option for effectively eliminating dissolved cobalt in water, addressing the physical constraints of traditional a...
Article
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Lithium‐sulfur (Li−S) batteries are recognized as one of the most promising next‐generation battery systems. However, the severe shuttle effect poses a crucial challenge for its large scale application. Herein, through simple freeze‐drying and subsequently annealing, the MnO was utilized to modify porous carbon and thereby form stable bond order to...
Article
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Capture of trace benzene is an important and challenging task. Metal–organic framework materials are promising sorbents for a variety of gases, but their limited capacity towards benzene at low concentration remains unresolved. Here we report the adsorption of trace benzene by decorating a structural defect in MIL-125-defect with single-atom metal...
Article
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The goal of metal-ion battery research is to develop anode materials with high storage capacity. This study explored the potential of 2H phase CrTe2, composed of two hexagonally stacked layers, as an optimal anode material for Li/K-ion batteries using Density Functional Theory (DFT). Preliminary analyses revealed that the material possesses thermod...
Article
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Cation⊗3π interactions play a special role in the behaviors of biological molecules and carbon-based materials in aqueous solutions, yet the effects of solvation on these interactions remain poorly understood. This study examines the sequential attachment of water molecules to cation⊗3π systems (cation = Li⁺, Na⁺, K⁺), revealing that solvation infl...
Article
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A highly sensitive molecularly imprinted electrochemiluminescence (MIECL) sensor was developed for detecting rifampicin (RIF) based on luminol@Co-MOF. Co-MOF had a significant enhancement of ECL signaling in the luminol-O2 system. Molecular imprinted polymers (MIPs) with the introduction of RIF provide new properties for the specific recognition of...
Article
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Ethylene (C2H4) electrosynthesis from the electrocatalytic CO2 reduction process holds enormous potential applications in industrial production. However, the sluggish kinetics of C─C coupling often result in low yield and poor selectivity for C2H4 production. Herein, the performance of Cu catalysts of varying sizes is investigated, prepared via a c...
Article
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Pristine carbon nitride (CN) has low CO2 reduction ability due to its sluggish charge carriers transfer and CO2 activation. Herein, carbon vacancy (CV) and Ag single atoms (SAs) with N2 coordination are simultaneously introduced into CN with the ordered structure for stable and efficient photoreduction of CO2 in the presence of H2O. The optimal sam...
Article
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The presented research includes the preparation, characterization, and implementation of magnetic biosorbent (Fe3O4/RWB), obtained from ragweed (Ambrosia artemisiifolia) biomass. Fe3O4/RWB was examined for the removal of a hazardous dye, malachite green (MG), from an aqueous solution in a batch system. The effects of the experimental parameters—ini...
Article
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In photo- and electrocatalysis it is already well-established that surface charges can alter chemical adsorption and reaction paths of the catalyst. However, the novel realm of plasma catalysis lacks experimental exploration regarding the impact of plasma-induced surface charges on catalytic processes. This paper paves the way by introducing a stra...
Article
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Adsorption method is one of the effective technologies for treating VOCs. Compared with activated carbon, silicon‐based materials have well‐ordered pore structure, good thermal stability and non‐flammability. In this paper, CYCU‐3/MCM‐41 composites were prepared by hydrothermal method through mixing MCM‐41 powder in situ. The nitrogen adsorption is...
Article
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The crosslinked network of TiO2–organic polymer composites has gained considerable attention over the past few years. The low band gap of TiO2 particles and the stimuli–responsive behavior of organic polymers make these composites suitable for a wide range of applications in biomedicine, environmental fields, and catalysis. Diverse morphologies and...
Article
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Mercury (Hg) heavy metal pollution is one of the serious problems that can threaten human health and ecosystems. In an effort to reduce mercury contamination, this research uses sea pandanus leaves (pandanus tectorius) as a natural biosorbent. The purpose of this study is to determine the contact time and adsorbing concentration capacity of sea pan...
Preprint
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Water containing fluoride concentrations greater than 1.5 mg/L is a public health problem. Adsorption on activated carbon is one of the most commonly used methods for removing elevated fluoride concentrations in water. This research was tested the parameters of fluoride adsorption on four modified activated carbons with nitric acid and hydrogen per...
Article
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This study investigated the electronic structure of single-atom Rhodium (Rh) and Iridium (Ir) adsorbed on defective and impurity-doped ZnO(0001) surfaces, and assessed their activity towards the CO oxidation reaction. Our findings reveal that surface impurities significantly influence the binding energies and electronic properties of the metal atom...
Article
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Alloy‐type anodes are of interest for their resource‐rich and high theoretical capacity performance in sodium‐ion batteries (SIBs). However, severe volume expansion may lead to rapid capacity decay and electrode pulverization. In this work, metallic Bi with better structure stability is rationally selected as a skeleton to form a 2D BiSb alloy to a...
Preprint
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This article reports the preparation of a novel functionalized magnetic nanoadsorbent through an addition reaction between Fe3O4 nanoparticles coated with allyl silica gel and 4-pyridinyl ethylene, detailed characterization of Fe3O4@SiO2-yl-VP was conducted. Among them, in the infrared spectrum, we can easily see that the absorption peak of C=C str...
Article
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Radionuclides, such as strontium (Sr), are hazardous radioactive isotopes commonly found in nuclear waste, posing serious environmental and health risks due to their long half-lives and ability to bioaccumulate. Inspired by the electronic modification effect, this study theoretically predicts that doping can significantly enhance the adsorptive per...
Article
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The aim of this study was to utilize processed orange peel waste (TOP) as an adsorbent to remove Cu(II) and Ni(II) ions from aqueous solutions. As a result of systematic experiments to determine the optimal conditions, it was determined that the most suitable conditions for the effective removal of Cu(II) ions were 400 mg/L initial concentration, 1...
Article
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The removal of toxic heavy metals from ecosystems is a challenge. Looking for green solutions is always required. Phytoremediation is one of the most powerful, efficient, eco-friendly and sustainable methods. Moreover, phytoadsorption approach emerged in the last two decades as a potential, cheap, and benign method for the clean up of contaminated...
Article
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Multi‐electron involved photoreduction of CO2 to hydrocarbon fuels is a long‐standing challenge, particularly in manipulating the selectivity of the target products. Here, a novel Ag–Pt bimetallic alloy on Zn‐based supports by photo‐deposition is designed for photocatalytic CO2 reduction to CH4 without any additives. This photocatalyst exhibits ≈ 9...
Article
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The thermodynamically and kinetically sluggish electrocatalytic C−N coupling from CO2 and NO3⁻ is inert to initially take place while typically occurring after CO2 protonation, which severely dwindles urea efficiency and carbon atom economy. Herein, we report a single O‐philic adsorption strategy to facilitate initial C−N coupling of *OCO and subse...