Construction of Tri‐Functional HOFs Material for Efficient Selective Adsorption and Photodegradation of Bisphenol A and Hydrogen Production

Abstract

This study proposes the construction of porous nanomaterial (HOFs@Fe3+) which anchors non‐noble metal ions Fe3+ onto nanoscale rod‐like hydrogen‐bonded organic frameworks (HOFs) by electrostatic and coordination interactions. The high specific surface area and the abundance of hydrogen‐bond adsorption active sites in pore structure of HOFs@Fe3+ facilitate strong interactions with the double OH in bisphenol A (BPA), resulting in the highest saturation adsorption of BPA that has been reported so far (452 mg g‐1). In addition, the ordered conjugate stacking framework structure and hydrogen bond of HOFs@Fe3+ and the variable valence properties of Fe3+ create new pathways for efficient separation of photogenerated carriers. The results show that HOFs@Fe3+ can completely adsorb and photodegrade 50 ppm BPA within 20 min, owing to the abundant hydrogen bond that acts both as adsorption sites to accelerate the mass transfer process and as catalytic sites to ensure adsorption and photodegradation can be matched synergistically. Meanwhile, the efficiency of photocatalytic H2 production by HOFs@Fe3+ reaches 21.55 mmol g‐1 h‐1 with non‐noble metal Fe3+ as co‐catalyst. This tri‐functional material with high adsorption capacity, high photodegradation efficiency, and high photocatalytic H2 production activity can be successfully used to solve the long‐standing conflict between environment and energy.

β-CD-decorated BODIPY-based porous polymers for improved photodegradation

“…To gain mechanistic insight into the photodegradation promoted by the CDP photocatalyst, different radical scavengers were introduced into the reaction system to quench the generated radicals. Typically, p -benzoquionone ( p -BQ), 53 l -histidine, 54 and isopropanol 55 were used as scavengers for ˙O 2 − , 1 O 2 , and ˙OH, respectively. As shown in Fig.…”

Pore‐Engineered Hydrogen‐Bonded Supramolecular Fluorosensor for Ultrasensitive Determination of Copper Ions

“…Metallization through electrostatic and coordination interactions is an effective way to diversify the functionalities of an HOF. [ 36–38 ] The metallization process may also alter the inherent optical properties of HOF, affording a new platform to design biosensors. We noted that PFC‐1 HOF (also known as HOF‐101), self‐assembled by 1,3,6,8‐tetrakis ( p ‐benzoic acid) pyrene (H 4 TBAPy) linkers via hydrogen bonds and π‐π stacking interactions (Figure S1, Supporting Information), [ 39,40 ] is structurally stable and has excellent fluorescence emission due to the presence of the large conjugated systems.…”

“…In a previous report by J. Lu and coworkers, Cu 2+ ions could anchor onto PFC‐1 via electrostatic and coordination interactions with the ─COOH groups of the linkers. [ 37 ] Therefore it is not surprising that such an interaction between Cu 2+ and PFC‐1 would lead to the FL quenching of this HOF. Indeed, 72.13 ± 0.67 µg mg −1 of Cu content was detected by ICP‐MS after the mixed solution of PFC‐1 and Cu 2+ (PFC‐1+Cu) was centrifuged to discard the PBS solution and washed with pH 6.0 deionized water three times.…”

Self-assembled π-conjugated chromophores: preparation of one- and two-dimensional nanostructures and their use in photocatalysis

“…These frameworks take advantage of the π–π stacking between the layers for excitonic coupling and the porous nature of the scaffold. 105–108 Recently, a HOF based on 1,3,6,8-tetrakis( p -benzoic acid)pyrene (TBAPy) was reported to reach an AQY of 28.6% (at 420 nm) in sacrificial photocatalytic H 2 evolution (ascorbic acid and Pt co-catalysts). 109 This high activity was attributed to the fast transfer of photogenerated excitons to the adjacent hydrophilic micropores, which reduces the loss of excitons through recombination during their migration.…”