AgBr quantum dots (QDs) were decorated on the surface of Bi₂WO₆to form a novel AgBr/Bi₂WO₆heterojunction. The enhancement catalytic efficiency AgBr/Bi₂WO₆heterojunctions relative to pure Bi₂WO₆could be associated differences in their lifetime as holes and electrons, valence conduction band positions.

Spherical Bi2WO6 nanoarchitectures with scale of 2–4 μm were prepared by a hydrothermal reaction using bismuth nitrate and ammonium tungstate as raw materials. Ag was deposited on the surface Bi2WO6via following facile photoreduction process. The as-prepared samples characterized UV-Vis-DRS, BET, XRD, XPS, FE-SEM, HR-TEM. results revealed that monodispersed metallic nanoparticles average size 10–15 nm spherical nanoarchitectures. photocatalytic activities evaluated photodegradation RhB...

The synthesis, structure, and fluorescence properties of a series new donor-pi-acceptor (D-pi-A) type compounds, with trivalent boron, protected by two mesityl groups, as acceptor, various typical donors different pi-conjugated bridges, are reported. All these stable organoboron compounds show intense single-photon excited (SPEF) two-photon (TPEF) in wide spectral range from blue to green, the peak position SPEF being basically same that TPEF. remarkably strong Cbond;B(mesityl)(2) bonding,...

Two fundamental functions of the sensor nodes in a wireless network are to sense its environment and transmit sensed information basestation. One approach prolong lifetime is deploy some relay whose main function communicate with nodes, other basestations. It desirable minimum number achieve certain connectivity requirement. In this paper, we study four related fault-tolerant node placement problems, each which has been previously studied only restricted form. For them, discuss computational...

This work develops a green strategy to recycle spent LiNi 1− x − y Co Mn O 2 cathodes hydroxide catalysts for the OER. The performance of hydroxides with various compositions is compared and one made from 0.33 shows superior properties.

Four novel ZnII coordination polymers, [Zn(btc)0.5(H2O)]n (1), {[Zn(btc)0.5(4,4'-bpy)0.5(H2O)]·1.5H2O}n (2), {[Zn2(H2btc)2(4,4'-bpy)4]·H2O}n (3), [Zn(H2btc)(bpe)]n (4) [H4btc = biphenyl-3,3',4,4'-tetracarboxylic acid, 4,4'-bpy 4,4'-bipyridine, and bpe 1,2-bis(4-pyridyl)ethane], have been synthesized by hydrothermal reactions. Single-crystal X-ray structural analysis reveals that the four polymers exhibit different bilayer architectures. Complex 1 possesses a structure in which two helical...

The relay node placement problem for wireless sensor networks is concerned with placing a minimum number of nodes into network to meet certain connectivity and survivability requirements. We study constrained versions the problem, where can only be placed at subset candidate locations. In connected we want place ensure base stations. survivable biconnectivity For each two problems, discuss its computational complexity, present framework polynomial time O(1) -approximation algorithms small...

We report p-type cubic GaN. The Mg-doped layers were grown on vicinal (100) GaAs substrates by plasma-enhanced molecular beam epitaxy. Thermally sublimed Mg was, with N2 carrier gas, fed into an electron-cyclotron resonance source. zinc-blende-structure GaN films achieved hole mobilities as high 39 cm2/V s at room temperature. nature of the confirmed x-ray diffractometry. depth profile was investigated secondary ions mass spectroscopy.

Uniform hierarchical multilayered Bi2WO6 architectures were synthesized by a facile template-free hydrothermal process, and their synthesis conditions formation mechanism carefully investigated. XRD, XPS, FE-SEM, HR-TEM techniques employed to determine phase composition, morphology microstructure. Nitrogen adsorption desorption isotherms conducted examine the specific surface area pore nature of as-prepared sample. The results show that consist secondary nanoplates have mesoporous nest-like...

Eight new coordination polymers, [Zn(L)Cl]n (1), [Zn2(L)4]n·2nH2O (2), [Zn2(L)2(1,3-bdc)]n (3), [Zn2(L)(1,3-bdc)(OH)]n·0.5nH2O (4), [Zn9(L)4(1,3-bdc)6(OH)2]n·3nH2O (5), [Zn2(L)2(1,4-bdc)]n·nH2O (6), [Cd2(L)4]n·nH2O (7), and [Cd3(L)2(1,3-bdc)2]n·nH2O (8) [HL = 4′-(2-carboxyphenyl)-4,2′:6′,4″-terpyridine, H2(1,3-bdc) benzene-1,3-dicarboxylic acid, H2(1,4-bdc) benzene-1,4-dicarboxylic acid] have been synthesized under hydrothermal conditions characterized by elemental analysis, IR, single...

Two series of EuIII/TbIII coordination polymers, [LnL(glu)]n·2nH2O (Ln = Eu (1), Tb (2)) and [LnL(glu)(H2O)]n (3), (4)) [HL (2-(2-sulfophenyl)imidazo(4,5-f)(1,10)-phenanthroline, H2glu glutaric acid] have been hydrothermally synthesized by controlling the pH values characterized elemental analysis, infrared spectra, single-crystal X-ray diffraction. Isomorphic compounds 1 2 exhibit 6-connected 3D network with pcu topological net, containing left- right-handed helical chains. 3 4 show...

Direct utilization of air and water for marching towards a “Solar Ammonia Refinery”.

A series of new donor–π-acceptor type compounds with trivalent boron as acceptor which show strong two-photon excited up-conversion fluorescence have been synthesized and one crystal structure described.

Three novel heterobimetallic coordination polymers, {Na2[Cd(odpa)(H2O)]}n (1), {Na2[Zn(odpa)(H2O)]}n (2), and {Na2[Cd3(odpa)2(H2O)5]·1.5H2O}n (3) (H4odpa = 4,4′-oxydiphthalic acid), have been prepared under solvothermal conditions characterized by single-crystal X-ray diffraction. Compounds 1 2 are unprecedented 2D bilayer anion networks containing 26- 24- membered channels made of Cd/Zn polyhedra linked (odpa)4− ligand, while a Na−O network is inserted subtly in the networks. Compound 3...

Four novel polymeric frameworks, [Zn(pytpy)Cl2]n (1), [Zn2(pytpy)2(ox)2]n·n(H2O) (2), [Cd(pytpy)(mal)]n·n(H2O) (3) and [Zn2(pytpy)(btc)(OH)]n (4), (pytpy = 4′-(4-pyridyl)-4,2′:6′,4″-terpyridine, H2ox oxalic acid, H2mal malic acid H3btc 1,3,5-benzenetricarboxylic acid) have been hydrothermally synthesized structurally characterized. Compound 1 shows infinite helical chains, which are extended into a 3D supramolecular network by intermolecular hydrogen bonds. In the structure of 2, there is...

In this work, three structurally related aromatic polycarboxylic acids, 1,4-benzenedicarboxylic acid (H2bdc), 1,3,5-benzenetricarboxylic (H3btc), and 1,2,4,5-benzenetetracarboxylic (H4bttc), have been utilized as the ancillary ligands to perform a systematic study on structure diversity of coordination polymer based Cobalt∩1,4-bis(imidazolyl)benzene matrix. The solvothermal reactions Co(NO3)2 with acids bib ligand afford novel polymers, [Co(bib)(bdc)]∞ (1), {[Co3(btc)2(bib)2(H2O)2](H2O)2}∞...

Four novel coordination polymers, [Cd2(ctpy)4]n·2nH2O (1), [Cd2(ctpy)2(ox)]n (2), [Zn(ctpy)(ox)0.5]n·0.5nH2O (3) and [Cu2(ctpy)2(ox)]n (4), (Hctpy = 4′-carboxy-4,2′:6′,4′′-terpyridine H2ox oxalic acid), have been hydrothermally synthesized characterized by elemental analysis, IR, single crystal X-ray diffraction thermogravimetric analyses. Compound 1 is a new two-fold interpenetrating (3,5)-connected 3D framework with Schläfli symbol (63)(69·8). 2 displays an unusual three-dimensional...

Continuous glucose monitoring based on the minimally invasive implantation of sensor is characterized by high accuracy and good stability. At present, concentration fluorescent capsule a new development trend. In this paper, we design with optimization study. The motion trajectory incident light in gel layer simulated Monte Carlo method, cloud maps intensity distribution at light-receiving are plotted. Altering density molecules, varying thickness tissue layers, adjusting angle incidence...

Abstract Seven metal–organic coordination polymers, namely [Cd(sfdb)(phen) 2 ] n · H O ( 1 ), [Cd(sfdb)(bpy) [Cu(sfdb)(phen)(H O)] 0.5 3 [Zn(sfdb)(bpy)(H CH OH 4 [Cd(sfdb)(quin)] 5 [Cd (sfdb) (Hsfdb) (phen) 6 and [Cd(sfdb)(bpy)] 7 ) [H sfdb = 4,4′‐sulfonyldibenzoic acid, phen 1,10‐phenanthroline, quin 2,2′‐biquinoline, bpy 2,2′‐bipyridine] have been synthesized according to the principles of crystal engineering structurally characterized by elemental analysis, IR spectroscopy, single‐crystal...