Porous CrO Architecture Assembled by Nano-Sized Cylinders/Ellipsoids for Enhanced Sensing to Trace HS Gas.

How to achieve high sensing of CrO-based sensors for harmful inorganic gases is still a challenge. To this end, CrO nanomaterials assembled from different building blocks were simply prepared by chromium salt immersion and air calcination with waste scallion roots as the biomass template. The hierarchical architecture calcined at 600 °C is constructed from nanocylinders and nanoellipsoids (named as CrO-600), and also possesses multistage pore distribution for target gas accessibility.

Bimetallic MOFs-derived coral-like Ag-MoC/C interwoven nanorods for amperometric detection of hydrogen peroxide.

Coral-like Ag-MoC/C-I and blocky Ag-MoC/C-II composites were obtained from one-step in situ calcination of [Ag(HL)(MoO)]·nHO [L: N-(pyridin-3-ylmethyl) pyridine-2-amine] under N/H and N atmospheres, respectively. The coral-like morphology of Ag-MoC/C-I is composed of interwoven nanorods embedded with small particles, and the nano-aggregate of Ag-MoC/C-II is formed by cross-linkage of irregular nanoparticles. The above composites are decorated on glassy carbon electrode (GCE) drop by drop to generate two enzyme-free electrochemical sensors (Ag-MoC/C/GCE) for amperometric detection of HO.

Novel neuron-network-like Cu-MoO/C composite derived from bimetallic organic framework for highly efficient detection of hydrogen peroxide.

Fabrication of non-enzymatic electrochemical sensors based on metal oxides with low valence-state for nanomolar detection of HO has been a great challenge. In this work, a novel neuron-network-like Cu-MoO/C hierarchical structure was simply prepared by in-situ pyrolysis of 3D bimetallic-organic framework [Cu(MoO)L] [L: N-(pyridin-3-ylmethyl)pyridine-2-amine] crystals. Meanwhile, the MoO/C nano-aggregates were also obtained by liquid phase copper etching.

Coral-like CoMoO hierarchical structure uniformly encapsulated by graphene-like N-doped carbon network as an anode for high-performance lithium-ion batteries.

Encapsulation of metal oxide anode material with hierarchical structure in graphene-like high conductivity carbon network is conducive to improving the lithium storage performance of the anode material. However, it is very challenging to rational synthesizing anode materials with such structure. Herein, a mesoporous spiny coral-like CoMoO (SCL-CMO) self-assembled from the mesoporous nanorods made of nanoparticles is prepared by a simple one-step solvothermal method.

Large-Scale Synthesis of Hierarchically Porous ZnO Hollow Tubule for Fast Response to ppb-Level HS Gas.

Response and recovery time to toxic and inflammable hydrogen sulfide (HS) gas are important indexes for metal oxide sensors in real-time environmental monitoring. However, large-scale production of ZnO-based sensing materials for fast response to ppb-level HS has been rarely reported. In this work, hierarchically porous hexagonal ZnO hollow tubule was simply fabricated by zinc salt impregnation and subsequently calcination using absorbent cotton as the template.

Enhanced HS gas-sensing performance of ZnSnO hierarchical quasi-microspheres constructed from nanosheets and octahedra.

Most of the reported ternary oxides based sensors have not been realized to detect ppb-level HS till now. In this work, ZnSnO hierarchical quasi-microspheres were prepared through a facile surfactant-free hydrothermal method followed by calcination in air atmosphere. The quasi-microspheres are composed of nanosheets with the thickness of 100 nm and octahedra with the average size of 0.

Poly[(μ(2)-4,4'-bipyridine-κN:N')(μ(2)-2,2-dimeth-yl-cyclo-pentane-1,3-dicarboxyl-ato-κO,O:O,O)cadmium].

In the title polymeric compound, [Cd(C(9)H(12)O(4))(C(10)H(8)N(2))](n), the Cd(II) atom is located on a twofold rotation axis and is coordinated by two 4,4'-bipyridine ligands and two 2,2-dimethyl-cyclo-pentane-1,3-dicarboxyl-ate ions. The carboxyl-ate ion and the N-heterocycle both function as bridges to link adjacent Cd(II) atoms to result in the formation of a layer structure parallel to (010). The mid-point of the central C-C bond of the 4,4'-bipyridine ligand is located on an inversion center.

A three-dimensional lead(II) coordination polymer: poly[aqua-mu-imidazole-4,5-dicarboxylato-lead(II)].

In the title coordination polymer, [Pb(C5H2N2O4)(H2O)](n), the Pb(II) atom is seven-coordinated by one N atom and five O atoms from four individual imidazole-4,5-dicarboxylate (HIDC2-) groups and one water molecule. It is interesting to note that the HIDC2- group serves as a bridging ligand to link the Pb(II) atoms into a three-dimensional microporous open-framework.

Poly[[bis(pyridin-3-ol)manganese(II)]-di-mu-pyridin-3-olato].

In the title complex, [Mn(C5H4NO)2(C5H5NO)2]n or [Mn(mu-3-PyO)2(3-PyOH)2]n (3-PyO- is the pyridin-3-olate anion and 3-PyOH is pyridin-3-ol), the Mn(II) atom lies on an inversion centre and has octahedral geometry, defined by two N atoms and two deprotonated exocyclic O atoms of symmetry-related pyridin-3-olate ligands [Mn-N = 2.3559 (14) A and Mn-O = 2.1703 (11) A], as well as two N atoms of terminal 3-PyOH ligands [Mn-N = 2.