In this work, we report the synthesis of nitrogen (N)-doped carbon nanodots (N-CNDs) with an N doping level 3.6 at. % by hydrothermal treatment prawn shell and their application as fluorophores for selective sensitive fluorescence detection NO2– in water. The results demonstrate that directly fluorescent quenching at N-CNDs can achieve analytical linear range up to 1.0 mM a limit μM. obtained using is dramatically lower than maximum value 3.0 mg L–1 (namely, 65 μM) drinking water ruled World...

The lack of high-performance electrode materials is the main factor restricting breakthrough capacitive applications. Recently, integrating advantages different pore structures to optimize material's performance has led great interest in design hierarchical porous carbon (HPC). Renewable, economical, and widely available kelp was selected as source obtain a mesoporous structure using its naturally contained salts (Ca, Na, so on) template this work. Subsequent chemical activation used get...

Mn3O4 hollow-tetrakaidecahedron micro/nano structures are synthesized basing on a structure-shrinkage-assisted Kirkendall effect under the hydrothermal condition. The Mn powders transformed into Mn(OH)2 micro tetrakaidecahedron and substantially oxidized to during filtration flow of oxygen. was proposed have important responsibility formation voids. Due structural shrinkage while transformation, diffusion substances from core shell found be accelerated thus larger holes formed....

Here we report that the plasma-etching processed commercial titanium nitride (TiN-PE, PE represents plasma-etching) was first treated by ball-milling method (TiNBM, BM ball-milling) is highly electrochemically active for nitrogen (N2) reduction reaction (NRR) to NH3. The results demonstrate TiN-PE as NRR electrocatalyst can deliver a yield rate of NH3 3.32 × 10−10 mol s−1 cm−2 (4.1 mg h−1 gcat.−1) with Faradaic efficiency 9.1% at −0.6 V (vs. RHE) in 0.1 M Na2SO4 solution (pH = 3.2). X-ray...

Abstract We present a simple and effective method for the synthesis of nanostructured Fe 3 O 4 micron‐spheres (NFMSs) by annealing hydrothermally formed FeCO spheres in argon. The phase structure, particle size, magnetic properties product have been characterized X‐ray diffraction (XRD), Fourier‐transform infrared spectroscopy (FTIR), photoelectron (XPS), field‐emission scanning electron microscopy (FESEM), transmission (TEM), means superconducting quantum interference device (SQUID)....

The plate-like micro/nanostructured zero valent iron has exhibited the significantly enhanced ability to remove Cr(<sc>vi</sc>) from real electroplating wastewater compared with commercial iron.

High-energy {100} faceted single crystal TiO2 nanorods were synthesized by a facile hydrothermal method. An interesting phase transition from the orthorhombic hydrogen titanate to anatase was observed during reaction process. A structural formation model of proposed based on experimental evidence. The resultant exhibited considerably enhanced photocatalytic activity towards degradation organic pollutants and removal heavy metal ions owing special one-dimensional structure with reactive...

Abstract In this study, we presented a convenient, in situ polymerization route for the preparation of Poly (butylene terephthalate) (PBT)/silica nanocomposites, which silica was not premodified. The nanocomposites were synthesized by terephthalic acid (TPA), 1,4‐butanediol (BD) and silica. structure these investigated Fourier transform infrared (FTIR) thermogravimetric analyses (TGA). results show that PBT chains successfully grafted onto surface Transmission electron microscope (TEM)...

Gold nanoparticle (Au NP)-decorated-Fe₂O₃ nanorod arrays (AuNPs-Fe₂O₃) as a photoelectrode are applied to the detection of nitrite solution with low limit and high sensitivity.

Electrochemically fabricated Pt/CFC by successive CV scanning in acidic media using Pt mesh counter electrode exhibits more favourable hydrogenation reaction activity of PNP to PAP a CFC electrode.

Spiky magnetoplasmonic nanoparticles with a Fe₃O₄ core and epitaxial Au branches were synthesized for magnetically recyclable catalysis of 4-nitrophenol reduction.

{001} faceted anatase TiO₂ nanosheet array films after calcination exhibited high photoelectrocatalytic activity toward water oxidation owing to superiorly intrinsic photoelectron transport properties of single crystal nanosheets.

Abstract Capacitive deionization (CDI) is a promising desalination technology and its development highly dependent on the electrode materials. Here, three‐dimensional N‐doped porous carbon (3D‐NPC) was fabricated for use as CDI material through one‐step carbonization process with C 5 H 8 NO 4 Na nitrogen source NaCl template. Benefiting from high‐level N doping (4.93 at %) high surface area of 1481 m 2 g −1 an interconnected hierarchical structure propitious to ion electron transportation,...

Titanium sesquioxide (Ti2O3) nanopowders have been successfully synthesized using TiCl4 assisted hydrogen reduction method from P25 (TiO2) powders at 970 °C. X-ray diffraction (XRD) and photoelectron spectroscopy reveal its high purity. The temperature dependent XRD, resistance, infrared absorption investigations exhibit Z-shaped curves (cell parameter a, transmittance) indicating the semiconductor-metal transition (SMT) in range of 135–220 With prolonging annealing time, starting SMT is...

The remediation of soil contaminated by 1,1,1-trichloro-2,2-bis(4-chlorophenyl) ethane (DDT) has been a challenge. In this paper, the degradation performances ball milling-induced plate-like sub-microstructured zero valent iron (SMZVI) to DDT in real environment is studied. It found that such SMZVI exhibits much higher than commercial ZVI powders under acidic conditions. More 95% could be degraded within 80 min 5 ppm DDT-contaminated with addition 50 mg g–1 SMZVI, which better previously...

Abstract A simple route is presented to fabricate the nano zero‐valent iron/carbon sphere (nZVI/CSs) composites via Fe 2+ ion‐adsorption and then reduction reaction on pre‐prepared CSs. The nZVI/CSs with monodispersed nZVI particles are successfully fabricated. 30–50 nm in size uniformly decorated sub‐microsized CSs about 250 diameter. These of enough high specific surface area (about 55.8 m 2 ⋅g −1 ) good ferromagnetism. Importantly, such have exhibited significantly stronger faster removal...

Fouling control is generally taken by selective pre-treatments, proper membrane operation conditions, and various cleaning methods. The compactness growth of cake layer on the surface should be timely controlled mechanical force or hydraulic action. In this work, sequence physical method was strategically introduced changing cross-flow velocity (CFV), backwash intensity, waste discharge from housing. Intensive flush automatically applied when delta TMP obtained after events more than 2%. It...