Constructing novel hyper-crosslinked In₂S₃@HLZU-1 through molecular expansion for enhanced photocatalytic performance

Abstract

A novel hyper-crosslinked In2S3@HLZU-1 heterojunction through molecular expansion was carefully designed and fully characterized. Hyper-cross-linked LZU-1(HLZU-1) with tunable specific surface area and pore volume through coupling Friedel-Crafts reaction was synthesized,...

A novel molecularly expanded covalent triazine framework heterojunction with significantly enhanced molecular oxygen activation and photocatalysis performance under visible light

“…Meanwhile, both WS 2 and C-GW 15 showed S–O bond peaks at 168.0 eV, and indicated that surface oxidation occurred when WS 2 was formed. 45 As shown in Fig. 3(d), in WS 2 , the peaks of W 4f 5/2 and W 4f 7/2 were at 33.7 eV and 31.5 eV, respectively, which were attributed to W 4+ .…”

“…Finally, the generated ˙O 2 − , h + , H 2 O 2 and ˙OH decompose the TC molecule into CO 2 , H 2 O and other molecules (eqn (6) and (7)). 14,45,56,57…”

“…Finally, the generated 6) and ( 7)). 14,45,56,57 The photocatalytic process of TC degradation may be described as follows:…”

“…In our previous research, several COF-based heterojunction photocatalysts have been constructed successfully, and the novel hyper-crosslinked In 2 S 3 @HLZU-1 heterojunction through molecular expansion exhibited excellent photocatalytic performance, and COFs-Ph@CdS through the hollow structure CdS showed enhanced photocatalytic capacity. 45,49 However, the molecularly expanded CTF molecular oxygen activation ability under visible irradiation has been little studied. As part of the ongoing studies on high-efficiency photocata-lysts, herein, a novel Z-type heterojunction, CTF-1-G/WS 2 , was constructed by a hydrothermal method through loading WS 2 on the surface of hyper-crosslinked CTF-1-G (molecularly expanded CTF-1), and its photodegradation performance as a photocatalyst was evaluated through the photodegradation of TC and RhB under visible light irradiation.…”

“…43,44 The construction of heterojunctions is one of the most efficient methods. CTFs can be combined with some inorganic semiconductors with suitable energy bands, to increase the catalytic specific surface area of the photocatalyst and improve the efficiency of photogenerated carrier generation and separation, 45 such as Pd@Imine-CTF, 46 CTF-1/GO, 47 MoS 2 /CTF, 48 etc .…”