Synthesis of para‐Amino Benzoic Acid–TiO₂ Hybrid Nanostructures of Controlled Functionality by an Aqueous One‐Step Process

Abstract

In situ amino acid surface-modified TiO 2 nanoparticle syntheses were performed by a simple one-pot hydrolysis of heteroleptic titanium alkoxide [Ti(OiPr) 3 (O 2 CC 6 H 4 NH 2 )] m in water with N n Bu 4 Br. This process allowed precise control of the surface grafting rate by varying the amount of precursors and provided highly functionalized nanomaterials. Their compositions and microstructures were determined by C, H and N elemental analyses, TGA-MS, 13 C CP-MAS NMR, XRD, TEM, BET, Raleigh diffusion, FTIR, Raman, XPS and UV/Vis experiments. The results indicated that (i) the aggre-

Bombyx mori silk/titania/gold hybrid materials for photocatalytic water splitting: combining renewable raw materials with clean fuels

“…Pure TiO 2 only shows a broad weight loss of 17% from room temperature to 420 °C, which is assigned to water, ethanol, ethylacetoacetate (EtAcAc), and possibly isopropanol from unreacted TiO 2 precursors [ 82 ].…”

“…The second step from 120 to 250 °C only shows a minor weight loss of 3% and is likely due to evaporation of more strongly bonded water and ethanol. The third step with an overall weight loss of 20% can again be assigned to silk degradation and combustion of unreacted EtAcAc and TTIP occurring between 250 and 600 °C [ 82 ]. No further weight loss is observed up to 1000 °C and the residual 68% can be assigned to TiO 2 .…”

2‐(1‐Acetyl‐2‐oxopropyl)‐5,10,15,20‐tetraphenylporphyrin and Its Transition‐Metal Complexes

“…The side-view of CuTPP, which has a perfect planar structure, is also presented as a reference. [22] In ZnTPP-AOP, the Zn 2+ is 0.2400(17) Å above the porphyrin ring. The porphyrin ring is twisted to a small extent, which becomes more severe in H 2 TPP-AOP.…”

Surface modification of titanium oxide nanoparticles with chelating molecules: New recognition devices for controlling the selectivity towards lanthanides ionic separation

“…[32] (sample with 20% in weight of PABA) and the same batch was used for all the experiments. NEt 3 , N,N 0 -dicyclohexylcarbodiimide (DCC), Ln(NO 3 ) 3 ,6H 2 O (Ln = La, Gd) and anhydrous DMF, CH 2 Cl 2 were purchased from Sigma-Aldrich and used as received.…”

“…Silica-based (nano) materials were mainly used because of the stability of the inorganic component under c-irradiation, of the large availability of R-Si(OR') 3 precursors and of the elaboration of highly stable hybrid networks due to strong SiAC bond [31]. Non silicate systems as selective extracting technologies were poorly studied because of the need of a reliable and reproducible functionalization route as we previously reported [32][33][34]. Li et al reported the immobilization of lanthanides (III) on an iso-nicotinic acid functionalized titania material in order to study the luminescence properties of these hybrid materials [35,36].…”