N n dimethylformamide (dmf)

Polyester fabric was purchased from Wenzhou Chaofan Textiles Co., Ltd., SWCNT wired ZIF-8 was synthesized according to previous literature (Lu et al., 2017 (link)). SWCNT-COOH was brought from Nanjing XFNANO Materials Tech Co., Ltd., Anhydrous methanol, Zn(NO₃)₂∙6H₂O and N,N-dimethylformamide (DMF) were obtained from Shanghai chemical reagent Co., Ltd., 2-methylimidazole was purchased from Aladdin Reagent. PEDOT:PSS pellets and PVDF-HFP were obtained from Sigma-Aldrich. Ionic liquid (EMIBF₄) was bought from Shanghai Cheng Jie Chemical Co., Ltd.

Polyacrylonitrile (PAN, M_W = 150,000) was purchased from Beijing Lark Branch Co., Ltd. (Beijing, China). SDBS was purchased from Sinopharm Chemical Reagent Co., Ltd. (Shanghai, China). N,N-Dimethylformamide (DMF) was provided by Shanghai Chemical Reagent Co. Ltd. (Shanghai, China). The spinning solution was obtained by dissolving 10 wt % PAN and 1 wt % SDBS in DMF under magnetic stirring at 60 °C for 4 h using a thermostatic magnetic stirrer (DF-101S, Xinrui Instrument Factory, Changzhou, China) to yield a transparent liquid.

Titanium aluminum carbide (Ti₃AlC₂, ≥98%) was purchased from Tianmazhihui Technology Company (Beijing, China). Potassium hydroxide (KOH, 85%), hydrogen fluoride (HF, 40%) and Ni(ii) chloride hexahydrate (99.9%) were purchased from J&K Chemical (Beijing, China). 1,4-Naphthalene dicarboxylic acid (1,4-H₂NDC, 95%) was purchased from Aladdin (Shanghai, China). N,N-Dimethylformamide (DMF, 99.5%) and ethanol (99.7%) were purchased from Shanghai Chemical Reagent CO., LTD (Shanghai, China). Iridium oxide (IrO₂, 99.9%), Nafion and Co(ii) chloride hexahydrate (99.9%) were purchased from Sigma-Aldrich (Beijing, China). Iron(iii) chloride hexahydrate (97%) was purchased from Stream Chemicals, INC. (Newburyport, USA). N,N-Dimethyltetradecylamine (90%) was purchased from Tokyo Chemical Industry CO., LTD. (Tokyo, Japan). n-Butanol (99%) was purchased from Shanghai Shenbo Chemical CO., LTD. (Shanghai, China). BiVO₄ coated fluorine-doped SnO₂ (FTO) glass substrates with a BiVO₄ mass loading of 0.5 mg cm⁻² were purchased from TOEI Technology (Hangzhou, China). The deionized (DI) water was purified using a Milli-Q3 System (Millipore, France). All chemicals were used without further purification.

Graphene oxides (GO) was prepared in accordance with the method reported in the literature.^{15 (link)} Poly (γ-benzyl-glutamate) with a terminal porphyrin group was prepared by using 5-(4-aminophenyl)-10,15,20-tris(phenyl)porphyrin as an initiator according to the literature,^{16 (link)} poly (l-glutamic acid) (PGA) was synthesized according to a published procedure,^{17 (link)} and their detailed synthesis process were provided in the ESI.† CuSO₄, CdSO₄, trifluoroacetic acid (TFA) were purchased from Aladdin Co. and used without further purification. HgCl₂ was purchased from Sinopharm Chemical Reagent CO. Ltd (China) and used without further purification. N,N-Dimethylformamide (DMF) and other reagents used were of analytical grade and purchased from Shanghai Chemical Reagent Company of China. Ultrapure water (18.2 Ω) was used in the process of experiment.

Polyacrylonitrile (PAN, M_W = 150,000) powder, was purchased from Beijing Lark Branch Co., Ltd. (Beijing, China). N,N-dimethylformamide (DMF) was provided from Shanghai Chemical Reagent Co., Ltd. (Shanghai, China). All materials were of analytical grade and applied without any further purification.

Anhydrous copper acetate (Cu(Ac)₂, M_w = 199.65 g/mol) and anhydrous zinc acetate (Zn(Ac)₂, M_w = 183.48 g/mol) were supplied by Shanghai Macklin Biochemical Co., Ltd. and Aladdin industrial Corporation (Shanghai, China), respectively. Polyacrylonitrile (PAN, M_w = 150,000 g/mol) powders were purchased from Beijing Lark Branch Co., Ltd. (Beijing, China). Polyvinylidene fluoride (PVDF, M_w = 400,000 g/mol) and N,N-dimethylformamide (DMF) were provided from Shanghai Chemical Reagent Co., Ltd. (Shanghai, China). Anhydrous copper sulfate (CuSO₄, M_w = 159.60 g/mol), zinc chloride (ZnCl₂, M_w = 73.09 g/mol), hexamethylenetetramine (C₆H₁₂N₄, M_w = 140.19 g/mol) and ammonia (NH₃·H₂O, M_w = 17.03 g/mol) were supplied from China Pharmaceutical Group Chemical Reagents Co., Ltd. (Shanghai, China). Methyl orange (M_w = 327.34 g/mol) was purchased from Shanghai Debai Biotechnology Co., Ltd. (Shanghai, China). All materials were of analytical grade and applied without any further purification.