Three-Dimensional Hierarchical Porous TiO for Enhanced Adsorption and Photocatalytic Degradation of Remazol Dye.

Three-dimensional hierarchical mesoporous structures of titanium dioxide (3D-HPT) were synthesized by self-assembly emulsion polymerization. Polymethyl methacrylate (PMMA) and pluronic 123 (P123) were used as the soft templates and co-templates for assisting the formation of hierarchical 3D porous structures. The TiO crystal structure, morphology, and Remazol red dye degradation were investigated.

2,2'-({4-[(4-Nitro-phen-yl)diazen-yl]phen-yl}imino)-diethanol.

In the title compound, C16H18N4O4, the mol-ecule assumes an E conformation with respect to the N=N double bond. The aromatic rings are not coplanar, with a dihedral angle of 7.51 (8)°.

3-Amino-benzoic acid-4,4'-bipyridine (2/3).

The asymmetric unit of the title compound, 3C(10)H(8)N(2)·2C(7)H(7)NO(2), consists of three mol-ecules of 4,4'-bipyridine (bpy) and two mol-ecules of 3-amino-benzoic acid (bza). Two mol-ecules of bza and two mol-ecules of bpy are connected via O-H⋯N, N-H⋯N and N-H⋯O hydrogen bonds, forming forming infinite double-stranded zigzag chains along the c axis. The third mol-ecule of bpy is linked to the chain by weak C-H⋯O inter-actions.

3,8-Dimethyl-4,7-diaza-deca-3,7-diene-2,9-dione dioxime.

The complete mol-ecule of the title compound, C(10)H(18)N(4)O(2), is generated by a crystallographic inversion centre at the mid-point of the central C-C bond. The two oxime groups have an E configuration. In the crystal, mol-ecules are linked through inter-molecular O-H⋯N hydrogen bonds.

1-(2-Bromobenzoyl)-6,7-(methylene-dioxy)isoquinoline.

In the title mol-ecule, C(17)H(10)BrNO(3), the mean planes of tricycle and bromo-phenyl fragments form a dihedral angle of 75.5 (1)°. In the crystal, π-π inter-actions [centroid-centroid distances = 3.