One–pot synthesis of boron and nitrogen co–doped nanocarbons for efficient catalytic reduction of nitrophenols

In Situ Implantation of Bi2S3 Nanorods into Porous Quasi-Bi-MOF Architectures: Enabling Synergistic Dissociation of Borohydride for an Efficient and Fast Catalytic Reduction of 4-Nitrophenol

“…Bi 2 S 3 @quasi-Bi-MOF delivers a reaction rate as high as 1.433 min –1 , which is higher than that of quasi-Bi-MOF (1.314 min –1 ), Bi 2 S 3 (1.268 min –1 ), and Bi 2 S 3 @C (0.132 min –1 ). Meanwhile, the catalytic activity of Bi 2 S 3 @quasi-Bi-MOF is further described by the turnover frequency (TOF), which is defined as the molar amount of 4-NP converted to 4-AP by 1 mg of catalyst per unit time at the conversion of 50%. , The corresponding TOF value is calculated to be 1.67 × 10 –4 mmol mg –1 min –1 (Figure g), which is better than that of quasi-Bi-MOF (1.15 × 10 –4 mmol mg –1 min –1 ) and Bi 2 S 3 (0.85 × 10 –4 mmol mg –1 min –1 ), and is favorably comparable to those of other reported catalytic systems, such as Co@NC-MF (1.14 × 10 –4 ), BNC (1.11 × 10 –4 ), SSBC (1.25 × 10 –4 ), B-NPC (1 × 10 –4 ), Ag@C-PCTF (1.716 × 10 –4 ), and CDs/CuO/mHA (8.33 × 10 –6 ) . Furthermore, the catalytic performance is also evaluated by the rate constant ( k nor ) by normalizing k app with the weight of Bi in the catalyst.…”

Amorphous FeOOH Anchored on Boron and Nitrogen Codoped Carbon Nanotubes for Fenton-like Oxidation of Sulfamethoxazole

“…Phase identification and purity of all Fe-1 to Fe-6@BNG and the pristine BNG catalysts were analyzed by powder X-ray diffraction (PXRD), as shown in Figure a. The pristine BNG sample clearly shows two broad peaks at 28 and 49°, which are, respectively, ascribed to the typical (002) and (100) reflections of a graphite structure . However, some broad peaks of FeOOH were observed at 2θ of 24.4, 40.3, 47.2, and 62.8°, indicating the presence of poor crystalline and/or amorphous nature of FeOOH in the newly formed composite .…”

Metal‐Free Catalytic Reduction of 4‐Nitrophenol to 4‐Aminophenol by sp3@sp2‐Hybridized Bucky Nanodiamond

“…According to the Arrhenius equation (ln k ¼ ln A À E a =RTÞ, the apparent activation energy (E a ) is estimated to be about 22.86 kJ mol À1 (Figure 5d). As far as we know, this E a is lower than that of previously reported catalysts, including the metal-based catalysts (e.g., Co/NC microflowers (29.1 kJ mol À1 ), Cu/Ti 3 C 2 MXene (36.1 kJ mol À1 ) and Cu 60 Ni 40 /CeO 2 nanorod (39.7 kJ mol À1 ) [18,19,30] ) and metal-free catalysts (e.g., N-doped graphene foams (44.3 kJ mol À1 ) and B, N-doped nanocarbon (30.65 kJ mol À1 ) [22,31] ).…”