The amino-functionalized magnetite/kaolin clay (MKC) was synthesized via a simple solvothermal method and used to remove Pb2+, Cu2+, Cd2+ from aqueous solutions. In comparison, the kaolin (KC) MKC were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, scanning transmission electron microscopy with energy dispersive spectrometry. results indicated formed Fe3O4 particles adhering surface interactions negatively charged KC. optimal experimental conditions evaluated,...

The <italic>x</italic>CeO₂/In₂O₃ catalysts were synthesized and used for photocatalytic decomposition of PFOA. excellent activity stability was derived from inhibition electron-holes recombination caused by the charge transfer between CeO₂ In₂O₃.

Chitosan-carbon nanotube composite beads combines the advantages of chitosan in forming a stable biocompatible framework and carbon that provide nanometer effects (high strength high specific surface area etc.). In this study, chitosan/amino multiwalled nanotubes (CS/AMWCNT) was prepared by phase-inversion method, which CS AMWCNT crosslinked ethylene glycol diglycidyl ether (EGDE). The CS/AMWCNT nanocomposite produced has been characterized BET, SEM, TGA, Raman spectroscopy exhibited...

An efficient bifunctional electrocatalyst with hollow structure (C–N/Co (1/2)) has been obtained through carbonization of ZIF-8@ZIF-67, which showed high ORR and OER activity, as evidenced by ZnAB using catalyst C–N/Co (1/2) in air cathode.

Abstract In this paper, thiol wheat straw (TWS) was prepared by esterifying mercaptoacetic acid onto cellulose in straw. The potential feasibility of TWS as sorbent for removing mercury ion from aqueous solution investigated a batch system. Hg2+ removal found to be dependent on initial pH, dose, concentration, contact time, and temperature. maximum value appeared the range pH 4 7. isothermal data sorption conformed well Langmuir model capacity (Qm) 72.46 mg/g. equilibrium reached within 100...

Sodium stearate modified montmorillonite(SSTA-MMT) is prepared by using the anion surfactant sodium stearate, and its structure characterized X-ray FI-IR diffraction. The results show that can be intercalated into interlayers of montmorillonite layer spacing expanded from 12.74 to 48.05 Å with loading concentration increasing 5 % 100 CEC Na-MMT. adsorption methylene blue onto SSTA-MMT experiments kinetic best described pseudo-second-order model isotherm in good agreement Langmuir equation.

Abstract Increasing the metal loading and downsizing particle size are two effective ways to boost electrochemical performance of catalysts. However, it is difficult simultaneously increase reduce since isolated individual atoms easy aggregate into nanoparticles when increasing loading. To tackle this contradiction, we report a bottom‐up ligand‐mediated strategy facilely prepare ultrafine CoO x nanoclusters anchored on Co‐N‐containing carbon matrix (CoO @Co‐NC). The co‐exist N O prevent Co...

The pollution control of tetracycline antibiotics in the environment has become a hot topic, and biochar adsorption an important technology to remove organic pollutants. Pyrolytic biochars (BC400, BC500, BC600) were prepared from corn straw then modified by KOH obtain KBC400, KBC500, KBC600. Among them, KBC400 was selected for secondary pyrolysis activation at 400-600℃ AKBC400, AKBC500, AKBC600. structure characteristics surface properties AKBC also characterized. kinetics thermodynamic...

The basic principle of determining ammonia nitrogen by nessler’s reagent colorimetry was expatiated, and the preparation method reagent, blank control, curve drawing method, water sample treatment technology (preservation time, dilution absorption liquid type, outflow volume), accuracy precision control other influences on determination results were discussed. solutions are proposed according to practical analysis practice. It provides reference for workers carry out detection in water....

Nessler's reagent spectrophotometry is the traditional method for ammonia nitrogen (NH 3 -N) determination, which adopted in national standard of People's Republic China (HJ 535-2009). In order to improve accuracy such method, possible influences, Reagent preparation, pH value solution, metal ions, organic solvents and natural matters, on NH -N determination were discussed. The results suggested that B, employing KI, HgI 2 NaOH, preferred preparation. And Spectrophotometry may be executed...

The tetracycline (TC) adsorption on the graphite was investigated by method of static experiments. Related properties adsorbate and adsorbent were studied to support mechanisms exploration. results indicate close relationship existing among capacity variation, TC K ow species (+,-,0) distribution pH. And hydrophobic force drives graphite.

Functional groups modified into adsorption resins were designed based on semiempirical molecular orbital theory, and the newly resin (named FZH01 with phthalic anhydride) having both lower LUMO level higher HOMO was prepared. The static desorption characteristics for gallic acid in aqueous solution onto FZH01, NDA150 GAC at temperature range of 288~318K studied bottle point method to confirm existence chemisorption between adsorbate adsorbents modified, which interpreted by approximate...

In order to restore soil polluted by crude oil, collected from an oil field located in northeast China were chosen study this research, which three degrading bacteria obtained means of screening. We use them ultimately make little damage the micro-ecological environment. The experimental results indicated that, degradation rate increases over time, rates 1 week 4 weeks, HXSS2>; HXSH1>; HXSS1. However, 12 HXSS1>; HXSH1. Finally, HXSS2 was selected as bacteria, and best inoculation time is 16...