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16 protocols using lead nitrate

1

Synthesis of Metal-Organic Composite Materials

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Aluminum nitrate (Al(NO3)3·9H2O), nickel nitrate (Ni(NO3)2·6H2O), sodium nitrate (NaNO3), silver nitrate (AgNO3), cupric nitrate (Cu(NO3)2), lead nitrate (Pb(NO3)2), urea, acetone, ethyl alcohol, and methyl orange (MO) were purchased
from Sinopharm Chemical Reagent Co. Ltd. Al(OH)3 was purchased
from Tianjin Ruijin Chemical Co., Ltd. All materials were used as
received without further purification. The conductive cloth used in
the experiment is made of polyethylene terephthalate (PET) fiber and
coated with copper. The thickness is 0.08 ± 0.02 mm.
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2

Peanut Shell-Based Chitosan Composite

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All chemicals used in this experiment were of analytical grade. Chitosan, ferrous sulfate heptahydrate (FeSO4·7H2O), sodium sulfide nonahydrate (Na2S·9H2O), and lead nitrate (Pb(NO3)2·6H2O) were obtained from Sinopharm Chemical Reagent Co., Ltd. (Shanghai, China). Peanut shells were obtained from a farm in Jinan City, Shandong Province, China. Anaerobic deionized water was obtained by aerating N2 into deionized water for over 30 min under magnetic stirring. This anaerobic deionized water was used in all the experiments.
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3

Aptamer-Based Hg2+ Detection Synthesis

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Cerium nitrate hexahydrate (CeCl3·6H2O, AR), urea (AR), citric acid (CA, AR), hydrogen peroxide (H2O2, AR), potassium persulfate (K2S2O8, AR), sodium phosphate dibasic dodecahydrate (Na2HPO4·2H2O, AR), potassium dihydrogen phosphate (KH2PO4, AR), N-hydroxysuccinimide (NHS, AR), 1-(3-Dimethylaminopropyl)-3-ethylcarbodiimide (EDC, AR), and mercuric chloride (HgCl2, AR) were obtained from Aladdin Biochemical Technology Co., Ltd. (Shanghai, China). Cadmium nitrate (Cd(NO3)2, AR), sodium chloride (NaCl, AR), sodium nitrate (NaNO3, AR), barium chloride (BaCl2, AR), lead nitrate (Pb(NO3)2, AR), cobalt chloride (CoCl2, AR), sodium sulfate decahydrate (Na2S·9H2O, AR), and sodium sulfate (Na2SO4, AR) were purchased from Sinopharm Chemical Reagents Co., Ltd. (Tianjin, China). The Hg2+ aptamer (5′-COOH-(CH2)6-TTTTTTTTTTTT-3′) was synthesized by Shanghai Sangon Biotechnology Co., Ltd. (Shanghai, China). The reagents used in this study were not subjected to purification treatment unless otherwise specified. The solutions involved were all prepared with ultrapure water (18.25 MΩ cm).
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4

Synthesis of CNC-based Metal Nanocomposites

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Cellulose nanocrystal (CNC) was provided by Tianjin Woodelfbio Cellulose Co., Ltd., Tianjin, China. Sodium periodate and DETA were purchased from Sigma-Aldrich Co. Ltd. Copper nitrate, Cu(NO3)2, lead nitrate, Pb(NO3)2, and potassium bichromate, K2Cr2O7, were purchased from Sinopharm Chemical Reagent Co. Ltd., China.
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5

Synthesis of Cellulose Acetate Nanocomposites

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Cellulose acetate, copper chloride, cadmium nitrate, nickel nitrate, lead nitrate, sodium hydroxide and EDTA were provided by Sinopharm Chemical Reagent Co., Ltd. N,N-Dimethylformamide (DMF) was purchased from Tianjin Kemiou Chemical Reagent Co., Ltd. Methacrylic acid (MAA) was purchased from Aladdin Reagent Co. and treated before being used. All chemical reagents were of analytical grade.
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6

Solvothermal Synthesis of Metal-Organic Frameworks

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Lead iodide (PbI2, 99.9%, Aladdin), 2-aminoterephthalic acid (NH2-bdc, >98%, Adamas), N,N’-dimethylformamide (DMF, 99.9%, Aladdin), ethanol (EtOH, 99.8%, Aladdin) and perchloric acid (70% in H2O, SCR) were used as-received for the solvothermal synthesis of TMOF-10-NH2(I). Lead bromide (PbBr2, 99.9%, Aladdin) were used as-received for the synthesis of TMOF-10-NH2(Br). Lead nitrate (Pb(NO3)2, >99%, Sinopharm Chemical Reagent Co., Ltd) were used as-received for synthesis of [Pb(NH2-bdc)]n. Triruthenium dodecacarbonyl (Ru3(CO)12, 99.95%, Aladdin), tri-n-octylamine (TOA, 95%, Aladdin) were used as-received for the synthesis of Ru NPs. All chemicals were obtained from commercial sources and used without further purification.
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7

Fabrication of Multifunctional Nanomaterials

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Magnesium chloride (MgCl2), calcium chloride (CaCl2), aqueous ammonia solution (NH3·H2O, 25–28%), n-hexane, sodium hydroxide (NaOH), hydrochloric acid (HCl, 35%) ethanol, mercury nitrate monohydrate (Hg(NO3)2·H2O), chromium(iii) nitrate monohydrate (Cr(NO3)3·9H2O), cadmium nitrate tetrahydrate (Cd(NO3)2·4H2O), lead nitrate (Pb(NO3)2), were all purchased from Sinopharm Chemical Reagent Co. Ltd (Shanghai, China). Sodium silicate (Na2O·SiO2) was obtained from Yixing Kexin Chemical Trading Co. Ltd. (China). 3-Aminopropyltriethoxysilane (APTES) was sourced from Aladdin Chemical Reagent Co. Ltd. (2,2,6,6-tetramethylpiperidin-1-yl) oxyl (TEMPO)-CNF was bought from Tianjin Haojia Cellulose Co., Ltd (China). Milli-Q water was used in all the experiments. All solvents and reagents were used as received.
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8

Chlorella Pyrenoidosa Immobilization via LAY-FOMM 60

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LAY-FOMM 60 (1.75 mm filament) was purchased from CC-Products, Köln, Germany. Chlorella pyrenoidosa (Cp) was provided from Wudi Lvqi Bioengineering Co., Ltd. Lead nitrate (analytical grade) were obtained from Sinopharm Chemical Reagent Co., Ltd. Glutaraldehyde (50 wt%) were purchased from Tianjin Fuchen Chemical Reagent Co., Ltd. Hydrochloric acid (36–38 wt%) were obtained from Shanghai Chemical Reagent General Factory.
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9

Jujube-Derived Lead Sorbent Synthesis

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The jujube pits were obtained from jujubes obtained from Hetian, Xinjiang, China. Lead nitrate used for the preparation of lead ion solutions was produced by Sinopharm Chemical Reagent Co. Ltd. L-Ascorbic acid was bought from Sinopharm Group Chemical Reagent Co. Ltd. Potassium ferrocyanide trihydrate and ammonium fluoride were purchased from Shanghai Macklin Biochemical Co. Ltd. Thymol blue and xylenol orange tetrasodium salt were obtained from Aladdin Industrial Corporation, and sodium acetate buffer solution was purchased from Sigma-Aldrich.
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10

Preparation of ATP Powder from Raw Ore

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Anhydrous ethanol (C2H5OH, ≥99.7%), ferrous sulfate heptahydrate (FeSO4·7H2O, ≥99.0%), nitric acid (HNO3), lead nitrate (Pb(NO3)2, ≥99.0%), sodium borohydride(NaBH4, ≥98.0%), sodium hydroxide (NaOH, ≥96.0%) and hydrochloric acid (HCl) were all purchased from Sinopharm Chemical Reagents Co., Ltd. (Shanghai, China). Sodium nitrate (NaNO3, ≥99.0%) was purchased from Tianjin Damao Chemical Reagent Factory (Tianjin, China). ATP raw ore used in this experiment came from Gansu Hanxing Environmental Protection Technology Co., Ltd. (Lanzhou, China). After crushing and grinding the ATP raw ore, pass through a 200-mesh sieve to obtain ATP powder, which is bagged for later use.
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