Please rewrite the following paragraphs to make them more logical and highlight the keyword: Photocatalytic degradation tests were performed in a quartz reactor. Ten mg of PCN-134/PCN-134 was weighed and dispersed in 100 mL of 40 mg/L NZT solution, stirred at 400 rpm on a magnetic stirrer and placed under a 500 W xenon lamp (Beijing Pulinsaisi, China) before the reaction started. At regular intervals, 3 mL of the mixed solution was removed and filtered through a 0.22μm nylon filter tip and subsequently measured by UV-Vis spectrophotometer at 314 nm. The photocatalytic performance of PCN-134/PCN-134 for NZT in the presence of different pH, anions and dissolved organic matter (DOM) was then investigated. The photocatalytic performance of PCN-134/PCN-134 was investigated after 5 times of repeated use.

In the quartz reactor, photocatalytic degradation tests were conducted using PCN-134/PCN-134. The process involved weighing 10 mg of PCN-134/PCN-134 and mixing it with 100 mL of a 40 mg/L NZT solution, which was stirred at 400 rpm using a magnetic stirrer. The reaction was initiated by exposing the mixture to a 500 W xenon lamp (Beijing Pulinsaisi, China). Samples were collected at regular intervals by removing 3 mL of the mixture, which was then filtered through a 0.22μm nylon filter tip and analyzed using a UV-Vis spectrophotometer at 314 nm to evaluate the photocatalytic performance of PCN-134/PCN-134 for NZT in various conditions such as different pH levels, the presence of anions and dissolved organic matter (DOM). Additionally, the photocatalytic performance of PCN-134/PCN-134 was re-evaluated after 5 repeated uses.