Controlled thermal treatment of NH2-MIL-125(Ti) for drastically enhanced photocatalytic reduction of Cr(VI)

In situ anchor of Na2Ti3O7 in nitrogen-rich carbon hollow red blood cell-like structure as a 0D-3D hierarchical electrode material for efficient electrochemical desalination

“…For NH 2 -MIL-125, the peaks at 644, 1253, 1564, 1669, and 3325 cm −1 were regarded as the O–Ti–O stretching vibration, N–H in-plane bending vibration, C–N stretching vibration, CO stretching of aromatic amine, and the N–H stretching vibration, respectively, which were in agreement with previous reports on NH 2 -MIL-125. 21,22 As expected, there was very little change in the characteristic bands of NH 2 -MIL-125 after hydrolysis in the presence of TN (see the curves for HRBC-MOF- x ). In comparison, the CO on HRBC-MOF- x at approximately 1705 cm −1 visibly increased.…”

“…The SEM image in Fig.S3† conrmed the particle structures of NH 2 -MIL-125-60, which indicated that TN preserved the outer framework of the MOFs from being etched.The protective effect of TN on NH 2 -MIL-125 was further conrmed by Fourier transform infrared (FTIR) spectra (Fig.S2a †). For NH 2 -MIL-125, the peaks at 644, 1253, 1564, 1669, and 3325 cm À1 were regarded as the O-Ti-O stretching vibration, N-H in-plane bending vibration, C-N stretching vibration, C]O stretching of aromatic amine, and the N-H stretching vibration, respectively, which were in agreement with previous reports on NH 2 -MIL-125 21,22. As expected, there was very little change in the characteristic bands of NH 2 -MIL-125 aer hydrolysis in the presence of TN (see the curves for HRBC-MOF-x).…”

Self-assembly of a heterogeneous microreactor with carbon dots embedded in Ti-MOF derived ZnIn2S4/TiO2 microcapsules for efficient CO2 photoreduction

“…38 The pristine NH 2 -MIL-125 exhibited the characteristic peaks around 500-800 cm −1 corresponding to the bending vibrations of the Ti-O-Ti group, the band at 1257 cm −1 is ascribed to the C-N group, and the bands in the range of 1350-1600 cm −1 could represent the -COOH group. 39 Although bare ZnIn 2 S 4 has no obvious characteristic peaks, aer the formation of ZIS/TiO 2 and CDs/ZIS/TiO 2 , the peaks in the range of 500-700 cm −1 and the band at 1625 cm −1 can be clearly observed, which represent the Ti-O group and -OH group, respectively, indicating that NH 2 -MIL-125 was indeed converted to TiO 2 in the microreactor. Due to the small number of CDs, the characteristic peaks belonging to CDs were not observed in the microreactor.…”

Construction of MIL-125-NH2@BiVO4 Composites for Efficient Photocatalytic Dye Degradation

“…45,46 In the high-resolution spectrum of the C 1s orbital (Figure S2), the peaks located at 284.8, 285.3, 286.4, and 288.8 eV could be ascribed to C−C, C−N, C−O, and C�O bonds, which were mainly derived from H 2 ATA linkers and benzoic rings, confirming that MIL-125-NH 2 was formed instead of TiO 2. 41,47 For bismuth and titanium, they are in good accordance with those in previous researches. 33,34 The typical peaks centered at 164.5 and 159.3 eV in the Bi 4f spectrum (Figure 2c) correspond to Bi 4f 5/2 and Bi 4f 7/2 , and the splits at 464.4 and 458.5 eV are assigned to Ti 2p 1/2 and Ti 2p 3/2 (Figure 2d), manifesting that the Bi and Ti species in BVTN-5 exist in the form of Bi 3+ and Ti 4+ oxidation state.…”